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Defining Pharmacy Leadership in the VA
Ashley L. Adams, PharmD. What are the key leadership attributes of pharmacy leaders?
Julie A. Groppi, PharmD. As a pharmacy leader, you have to be confident in what you do as a pharmacist and not only look at what you are doing now but what you can do in the future. You always have to look for that next apple to pick, because you have to be willing to accept change and help influence change, even though many people do not like change. As a supervisor, I ran a large and growing clinical pharmacy program. I remember many colleagues saying, “You mean, I have to do this now?” I would always try to bring the conversation around with staff to ensure that the benefit of the change or ‘what is in it for you’ was included in the approach. If you are a leader, communicating with physicians, pharmacists, or VA leadership, you just need to sell it to show why it is important and how the change will improve the process. If you don’t, then you won’t be able facilitate or sustain the momentum needed for change.
One important aspect of being a change leader is to make sure you listen (and talk) to those working in the area on a daily basis when you are going through your processes and trying to create change on what is going happen. It is important to make sure your stakeholders are involved and heard while you think about all of your potential obstacles; this is something that I always have tried to do. Also, reflecting on where you have been and what you have done will help you to think differently and is something you should do both professionally and personally. I may not need to know every aspect of the process, but I need to know the obstacles to figure out ways to prevent or break down those walls and solve those underlying issues.
Dr. Adams. What are some of the challenges and opportunities you have found in pharmacy leadership
Dr. Groppi. I think the challenges [are related to] the sheer volume of work that is out there. Having the ability to be able to separate and think about where you want your team to go is the challenge of any leader. When you are right in the middle of it, you tend to focus on the task at hand to get the work done. One week, it is pain management, and then the next week it is hepatitis C, and then it’s assessing acute care services, then gaps or problems somewhere else. There are always different obstacles and different initiatives (pressures) coming at you. You have to not lose your sense of where you want to go. Often, many people cannot stop and look at the whole picture.
I joined the Clinical Pharmacy Practice office in 2011, and one of the first things we were challenged with when the office started was to write guidelines, create policies, and develop tools that would help guide the practice. However, when we started sending out resources to the field, many people were too busy with what was going on at their local facility to focus on what we had developed, so we had to step back. We brainstormed some ideas and looked at our peers in other offices who had demonstrated success. When we started discussing pharmacist scope of practice agreements, I looked at nursing service and their movement related to scope of practice and how it had impacted change in the profession over the past several years.
Nursing has great infrastructure and support for its program. They created many different types of clinical practice councils within nursing, and they were able to institute a lot of changes and spread their initiatives. We thought, “Why don’t we do this for clinical pharmacy?” So we started doing more outreach to the different sites and had discussions with our advisory board, which resulted in the development of the National Clinical Pharmacy Practice Council (NCPPC). We promoted facility and VISN councils to start talking about practice issues and regularly discussing our initiatives as a part of teleconferences, so we could gain support and keep the momentum. Now the NCPPC has grown and everyone is excited about what is happening. It is having a multipronged effect to impact clinical practice.
Dr. Adams. When you are starting on a new project, how do you and your fellow coworkers decide which one is the best to pursue?
Dr. Groppi. We just do them all—I’m joking... sometimes it feels that way. It’s really hard. There are a lot of different things happening at once and many competing priorities, so we try to do as many things as possible. We will assist with requests that come through the Central Office or questions coming from other program offices related to clinical pharmacy practice and we try to get involved and help support and share the success stories of our pharmacist roles as much as possible. For example, the National Nephrology Office contacted us, about the anticoagulation directive. They wanted to do something similar for nephrology since so many pharmacists were effectively and safely managing erythropoietin stimulating agents. This started a conversation.
Often, the priorities come from patient demand such as in primary care. When VA was implementing patient aligned care teams (PACTs), PBM had to ensure that we had conversations ready to describe clinical pharmacy practice in this area. The same thing occurred with hepatitis C. There were new drugs approved and roles for pharmacists, and often there were not enough providers to care for patients. It became an opportunity.
Frequently, choices are based on what we think will be the largest yield and the biggest gaps in care. Other times, it is based on national priorities. We look at the strategic plan for VA and develop our initiatives accordingly. What’s a new priority or component of the strategic plan for this year? What’s the plan for next year or moving forward? Telepharmacy a few years ago or telehealth is an example. We were making sure to describe our practice in the area and then set goals that are going to sustain the profession.
We focused on PACTs during the first few years as we had hundreds of pharmacists practicing. The next big area was specialty and acute care. We started leading workgroups and focused on policies and guidance to share strong practices. The past several years the focus has been on pain management because everyone is struggling with the number of veterans on opioids. When there is a big crisis, you have to hit it full force and look for opportunities that exist. Antimicrobial stewardship was another great example where we were able to provide help and describe the important role of pharmacists based on the strong practices we have across VA. Many times prioritization is on demand, but always keeping in mind what is happening around you and how it supports our VHA strategic plan.
Dr. Adams. What would be your main advice for future pharmacy leaders? Just taking those opportunities and going with them?
Dr. Groppi. Yes. Look for the spot where you might be able to make a positive im
Ashley L. Adams, PharmD. What are the key leadership attributes of pharmacy leaders?
Julie A. Groppi, PharmD. As a pharmacy leader, you have to be confident in what you do as a pharmacist and not only look at what you are doing now but what you can do in the future. You always have to look for that next apple to pick, because you have to be willing to accept change and help influence change, even though many people do not like change. As a supervisor, I ran a large and growing clinical pharmacy program. I remember many colleagues saying, “You mean, I have to do this now?” I would always try to bring the conversation around with staff to ensure that the benefit of the change or ‘what is in it for you’ was included in the approach. If you are a leader, communicating with physicians, pharmacists, or VA leadership, you just need to sell it to show why it is important and how the change will improve the process. If you don’t, then you won’t be able facilitate or sustain the momentum needed for change.
One important aspect of being a change leader is to make sure you listen (and talk) to those working in the area on a daily basis when you are going through your processes and trying to create change on what is going happen. It is important to make sure your stakeholders are involved and heard while you think about all of your potential obstacles; this is something that I always have tried to do. Also, reflecting on where you have been and what you have done will help you to think differently and is something you should do both professionally and personally. I may not need to know every aspect of the process, but I need to know the obstacles to figure out ways to prevent or break down those walls and solve those underlying issues.
Dr. Adams. What are some of the challenges and opportunities you have found in pharmacy leadership
Dr. Groppi. I think the challenges [are related to] the sheer volume of work that is out there. Having the ability to be able to separate and think about where you want your team to go is the challenge of any leader. When you are right in the middle of it, you tend to focus on the task at hand to get the work done. One week, it is pain management, and then the next week it is hepatitis C, and then it’s assessing acute care services, then gaps or problems somewhere else. There are always different obstacles and different initiatives (pressures) coming at you. You have to not lose your sense of where you want to go. Often, many people cannot stop and look at the whole picture.
I joined the Clinical Pharmacy Practice office in 2011, and one of the first things we were challenged with when the office started was to write guidelines, create policies, and develop tools that would help guide the practice. However, when we started sending out resources to the field, many people were too busy with what was going on at their local facility to focus on what we had developed, so we had to step back. We brainstormed some ideas and looked at our peers in other offices who had demonstrated success. When we started discussing pharmacist scope of practice agreements, I looked at nursing service and their movement related to scope of practice and how it had impacted change in the profession over the past several years.
Nursing has great infrastructure and support for its program. They created many different types of clinical practice councils within nursing, and they were able to institute a lot of changes and spread their initiatives. We thought, “Why don’t we do this for clinical pharmacy?” So we started doing more outreach to the different sites and had discussions with our advisory board, which resulted in the development of the National Clinical Pharmacy Practice Council (NCPPC). We promoted facility and VISN councils to start talking about practice issues and regularly discussing our initiatives as a part of teleconferences, so we could gain support and keep the momentum. Now the NCPPC has grown and everyone is excited about what is happening. It is having a multipronged effect to impact clinical practice.
Dr. Adams. When you are starting on a new project, how do you and your fellow coworkers decide which one is the best to pursue?
Dr. Groppi. We just do them all—I’m joking... sometimes it feels that way. It’s really hard. There are a lot of different things happening at once and many competing priorities, so we try to do as many things as possible. We will assist with requests that come through the Central Office or questions coming from other program offices related to clinical pharmacy practice and we try to get involved and help support and share the success stories of our pharmacist roles as much as possible. For example, the National Nephrology Office contacted us, about the anticoagulation directive. They wanted to do something similar for nephrology since so many pharmacists were effectively and safely managing erythropoietin stimulating agents. This started a conversation.
Often, the priorities come from patient demand such as in primary care. When VA was implementing patient aligned care teams (PACTs), PBM had to ensure that we had conversations ready to describe clinical pharmacy practice in this area. The same thing occurred with hepatitis C. There were new drugs approved and roles for pharmacists, and often there were not enough providers to care for patients. It became an opportunity.
Frequently, choices are based on what we think will be the largest yield and the biggest gaps in care. Other times, it is based on national priorities. We look at the strategic plan for VA and develop our initiatives accordingly. What’s a new priority or component of the strategic plan for this year? What’s the plan for next year or moving forward? Telepharmacy a few years ago or telehealth is an example. We were making sure to describe our practice in the area and then set goals that are going to sustain the profession.
We focused on PACTs during the first few years as we had hundreds of pharmacists practicing. The next big area was specialty and acute care. We started leading workgroups and focused on policies and guidance to share strong practices. The past several years the focus has been on pain management because everyone is struggling with the number of veterans on opioids. When there is a big crisis, you have to hit it full force and look for opportunities that exist. Antimicrobial stewardship was another great example where we were able to provide help and describe the important role of pharmacists based on the strong practices we have across VA. Many times prioritization is on demand, but always keeping in mind what is happening around you and how it supports our VHA strategic plan.
Dr. Adams. What would be your main advice for future pharmacy leaders? Just taking those opportunities and going with them?
Dr. Groppi. Yes. Look for the spot where you might be able to make a positive im
Ashley L. Adams, PharmD. What are the key leadership attributes of pharmacy leaders?
Julie A. Groppi, PharmD. As a pharmacy leader, you have to be confident in what you do as a pharmacist and not only look at what you are doing now but what you can do in the future. You always have to look for that next apple to pick, because you have to be willing to accept change and help influence change, even though many people do not like change. As a supervisor, I ran a large and growing clinical pharmacy program. I remember many colleagues saying, “You mean, I have to do this now?” I would always try to bring the conversation around with staff to ensure that the benefit of the change or ‘what is in it for you’ was included in the approach. If you are a leader, communicating with physicians, pharmacists, or VA leadership, you just need to sell it to show why it is important and how the change will improve the process. If you don’t, then you won’t be able facilitate or sustain the momentum needed for change.
One important aspect of being a change leader is to make sure you listen (and talk) to those working in the area on a daily basis when you are going through your processes and trying to create change on what is going happen. It is important to make sure your stakeholders are involved and heard while you think about all of your potential obstacles; this is something that I always have tried to do. Also, reflecting on where you have been and what you have done will help you to think differently and is something you should do both professionally and personally. I may not need to know every aspect of the process, but I need to know the obstacles to figure out ways to prevent or break down those walls and solve those underlying issues.
Dr. Adams. What are some of the challenges and opportunities you have found in pharmacy leadership
Dr. Groppi. I think the challenges [are related to] the sheer volume of work that is out there. Having the ability to be able to separate and think about where you want your team to go is the challenge of any leader. When you are right in the middle of it, you tend to focus on the task at hand to get the work done. One week, it is pain management, and then the next week it is hepatitis C, and then it’s assessing acute care services, then gaps or problems somewhere else. There are always different obstacles and different initiatives (pressures) coming at you. You have to not lose your sense of where you want to go. Often, many people cannot stop and look at the whole picture.
I joined the Clinical Pharmacy Practice office in 2011, and one of the first things we were challenged with when the office started was to write guidelines, create policies, and develop tools that would help guide the practice. However, when we started sending out resources to the field, many people were too busy with what was going on at their local facility to focus on what we had developed, so we had to step back. We brainstormed some ideas and looked at our peers in other offices who had demonstrated success. When we started discussing pharmacist scope of practice agreements, I looked at nursing service and their movement related to scope of practice and how it had impacted change in the profession over the past several years.
Nursing has great infrastructure and support for its program. They created many different types of clinical practice councils within nursing, and they were able to institute a lot of changes and spread their initiatives. We thought, “Why don’t we do this for clinical pharmacy?” So we started doing more outreach to the different sites and had discussions with our advisory board, which resulted in the development of the National Clinical Pharmacy Practice Council (NCPPC). We promoted facility and VISN councils to start talking about practice issues and regularly discussing our initiatives as a part of teleconferences, so we could gain support and keep the momentum. Now the NCPPC has grown and everyone is excited about what is happening. It is having a multipronged effect to impact clinical practice.
Dr. Adams. When you are starting on a new project, how do you and your fellow coworkers decide which one is the best to pursue?
Dr. Groppi. We just do them all—I’m joking... sometimes it feels that way. It’s really hard. There are a lot of different things happening at once and many competing priorities, so we try to do as many things as possible. We will assist with requests that come through the Central Office or questions coming from other program offices related to clinical pharmacy practice and we try to get involved and help support and share the success stories of our pharmacist roles as much as possible. For example, the National Nephrology Office contacted us, about the anticoagulation directive. They wanted to do something similar for nephrology since so many pharmacists were effectively and safely managing erythropoietin stimulating agents. This started a conversation.
Often, the priorities come from patient demand such as in primary care. When VA was implementing patient aligned care teams (PACTs), PBM had to ensure that we had conversations ready to describe clinical pharmacy practice in this area. The same thing occurred with hepatitis C. There were new drugs approved and roles for pharmacists, and often there were not enough providers to care for patients. It became an opportunity.
Frequently, choices are based on what we think will be the largest yield and the biggest gaps in care. Other times, it is based on national priorities. We look at the strategic plan for VA and develop our initiatives accordingly. What’s a new priority or component of the strategic plan for this year? What’s the plan for next year or moving forward? Telepharmacy a few years ago or telehealth is an example. We were making sure to describe our practice in the area and then set goals that are going to sustain the profession.
We focused on PACTs during the first few years as we had hundreds of pharmacists practicing. The next big area was specialty and acute care. We started leading workgroups and focused on policies and guidance to share strong practices. The past several years the focus has been on pain management because everyone is struggling with the number of veterans on opioids. When there is a big crisis, you have to hit it full force and look for opportunities that exist. Antimicrobial stewardship was another great example where we were able to provide help and describe the important role of pharmacists based on the strong practices we have across VA. Many times prioritization is on demand, but always keeping in mind what is happening around you and how it supports our VHA strategic plan.
Dr. Adams. What would be your main advice for future pharmacy leaders? Just taking those opportunities and going with them?
Dr. Groppi. Yes. Look for the spot where you might be able to make a positive im
Improved Access to Drug Safety Labeling Changes Information
The FDA has made it easier and faster for health care professionals (HCPs) to get up-to-date drug safety information for the more than 18,000 approved drugs via its Drug Safety Labeling Changes (SLCs) database. The FDA Center for Drug Evaluation and Research recently launched a new searchable and downloadable database for SLCs information (http://www.fda.gov/slc). In most cases, the improved website provides supplemental labeling information within days of a safety label change. Now when a physician or other HCP prescribes a medicine using an e-prescribing system, the updated drug safety information displays much faster than it did with the previous safety labeling changes system. Here’s how.
Shortly after FDA approval of the new drug safety information for an existing drug, the information is entered into the safety labeling changes database. Health information technology (IT) vendors that provide clinical and drug information support for hospitals and pharmacies are then alerted to integrate the updated data into their systems as well. Instead of waiting weeks for the monthly release of all safety labeling updates, this information now is accessible within days.
Although SLCs have been available online for many years, previously they were aggregated and posted only monthly. This time frame meant that if a new safety concern was reflected in an approved labeling change early in a month, then the information was not publicly posted until the following month—4 to 5 weeks later. The FDA recognized the need to apply new digital functionalities to shorten the time between an SLC approval and the public availability of the safety information. Between January 2015 and July 2016, FDA made more than 1,500 SLCs (Table).
As health care professionals know, the “labeling” of a medicine includes detailed information provided in the package insert that accompanies the drug whether it’s on the box, inside the product box, or folded and glued to the lid of a bottle. The product labeling includes a summary for the safe and effective use of the drug and is generally intended for use by prescribers and pharmacists.
However, when a drug is approved, not every safety concern or risk potential can be identified or known. Safety information can change multiple times over the lifetime of a drug as the FDA learns about new risks, interactions with other medications, and adverse effects.
After the FDA becomes aware of new safety information, changes to the product labeling may be required. That’s why postmarketing safety oversight is essential to learn more about the effects of medicines when they are used by a large number of people over a long period. If new safety concerns emerge after a medicine is used in a real-world setting, the FDA may require a “Safety Labeling Change.” The FDA’s new, faster connection between updated safety information and safety alerts on the pharmacy computer system can help build improved confidence into each drug prescription.
The new SLCs website contains a database of changed safety information from all sections of the label that addresses a drug’s safety, including:
- Boxed warning
- Contraindications
- Warnings and precautions
- Adverse reactions
- Drug interactions
- Use in specific populations
- Patient counseling information/patient information/medication guide
Health care providers, health IT vendors, and the public now have access to critical safety data that can impact the health of a patient faster than before.
Providing drug safety labeling changes quickly to health care vendors facilitates having the data further integrated into systems frequently accessed by HCPs. It also carries SLC data downstream for integration into drug information systems and other electronic venues, such as social media, news feeds, and websites, with vast reach among health care professionals, patients, and consumers. Some of these include WebMD, Medscape, American Society of Health-System Pharmacists, PDR.net, Epocrates, First Databank, and Yahoo Health.
The data files are downloadable in a comma-separated values format—a feature that allows information to be gathered faster. There also are hyperlinks to the labeling revisions at Drugs@FDA, and notifications are sent to subscribers via an RSS feed.
The FDA continues to pursue and provide innovative ways to rapidly access important information that protects and advances public health and will work to better identify class labeling changes. The FDA’s primary goal for the redesigned SLC Internet interface is to deliver drug safety labeling changes as quickly and efficiently as possible, to help create and promote better patient health.
The FDA has made it easier and faster for health care professionals (HCPs) to get up-to-date drug safety information for the more than 18,000 approved drugs via its Drug Safety Labeling Changes (SLCs) database. The FDA Center for Drug Evaluation and Research recently launched a new searchable and downloadable database for SLCs information (http://www.fda.gov/slc). In most cases, the improved website provides supplemental labeling information within days of a safety label change. Now when a physician or other HCP prescribes a medicine using an e-prescribing system, the updated drug safety information displays much faster than it did with the previous safety labeling changes system. Here’s how.
Shortly after FDA approval of the new drug safety information for an existing drug, the information is entered into the safety labeling changes database. Health information technology (IT) vendors that provide clinical and drug information support for hospitals and pharmacies are then alerted to integrate the updated data into their systems as well. Instead of waiting weeks for the monthly release of all safety labeling updates, this information now is accessible within days.
Although SLCs have been available online for many years, previously they were aggregated and posted only monthly. This time frame meant that if a new safety concern was reflected in an approved labeling change early in a month, then the information was not publicly posted until the following month—4 to 5 weeks later. The FDA recognized the need to apply new digital functionalities to shorten the time between an SLC approval and the public availability of the safety information. Between January 2015 and July 2016, FDA made more than 1,500 SLCs (Table).
As health care professionals know, the “labeling” of a medicine includes detailed information provided in the package insert that accompanies the drug whether it’s on the box, inside the product box, or folded and glued to the lid of a bottle. The product labeling includes a summary for the safe and effective use of the drug and is generally intended for use by prescribers and pharmacists.
However, when a drug is approved, not every safety concern or risk potential can be identified or known. Safety information can change multiple times over the lifetime of a drug as the FDA learns about new risks, interactions with other medications, and adverse effects.
After the FDA becomes aware of new safety information, changes to the product labeling may be required. That’s why postmarketing safety oversight is essential to learn more about the effects of medicines when they are used by a large number of people over a long period. If new safety concerns emerge after a medicine is used in a real-world setting, the FDA may require a “Safety Labeling Change.” The FDA’s new, faster connection between updated safety information and safety alerts on the pharmacy computer system can help build improved confidence into each drug prescription.
The new SLCs website contains a database of changed safety information from all sections of the label that addresses a drug’s safety, including:
- Boxed warning
- Contraindications
- Warnings and precautions
- Adverse reactions
- Drug interactions
- Use in specific populations
- Patient counseling information/patient information/medication guide
Health care providers, health IT vendors, and the public now have access to critical safety data that can impact the health of a patient faster than before.
Providing drug safety labeling changes quickly to health care vendors facilitates having the data further integrated into systems frequently accessed by HCPs. It also carries SLC data downstream for integration into drug information systems and other electronic venues, such as social media, news feeds, and websites, with vast reach among health care professionals, patients, and consumers. Some of these include WebMD, Medscape, American Society of Health-System Pharmacists, PDR.net, Epocrates, First Databank, and Yahoo Health.
The data files are downloadable in a comma-separated values format—a feature that allows information to be gathered faster. There also are hyperlinks to the labeling revisions at Drugs@FDA, and notifications are sent to subscribers via an RSS feed.
The FDA continues to pursue and provide innovative ways to rapidly access important information that protects and advances public health and will work to better identify class labeling changes. The FDA’s primary goal for the redesigned SLC Internet interface is to deliver drug safety labeling changes as quickly and efficiently as possible, to help create and promote better patient health.
The FDA has made it easier and faster for health care professionals (HCPs) to get up-to-date drug safety information for the more than 18,000 approved drugs via its Drug Safety Labeling Changes (SLCs) database. The FDA Center for Drug Evaluation and Research recently launched a new searchable and downloadable database for SLCs information (http://www.fda.gov/slc). In most cases, the improved website provides supplemental labeling information within days of a safety label change. Now when a physician or other HCP prescribes a medicine using an e-prescribing system, the updated drug safety information displays much faster than it did with the previous safety labeling changes system. Here’s how.
Shortly after FDA approval of the new drug safety information for an existing drug, the information is entered into the safety labeling changes database. Health information technology (IT) vendors that provide clinical and drug information support for hospitals and pharmacies are then alerted to integrate the updated data into their systems as well. Instead of waiting weeks for the monthly release of all safety labeling updates, this information now is accessible within days.
Although SLCs have been available online for many years, previously they were aggregated and posted only monthly. This time frame meant that if a new safety concern was reflected in an approved labeling change early in a month, then the information was not publicly posted until the following month—4 to 5 weeks later. The FDA recognized the need to apply new digital functionalities to shorten the time between an SLC approval and the public availability of the safety information. Between January 2015 and July 2016, FDA made more than 1,500 SLCs (Table).
As health care professionals know, the “labeling” of a medicine includes detailed information provided in the package insert that accompanies the drug whether it’s on the box, inside the product box, or folded and glued to the lid of a bottle. The product labeling includes a summary for the safe and effective use of the drug and is generally intended for use by prescribers and pharmacists.
However, when a drug is approved, not every safety concern or risk potential can be identified or known. Safety information can change multiple times over the lifetime of a drug as the FDA learns about new risks, interactions with other medications, and adverse effects.
After the FDA becomes aware of new safety information, changes to the product labeling may be required. That’s why postmarketing safety oversight is essential to learn more about the effects of medicines when they are used by a large number of people over a long period. If new safety concerns emerge after a medicine is used in a real-world setting, the FDA may require a “Safety Labeling Change.” The FDA’s new, faster connection between updated safety information and safety alerts on the pharmacy computer system can help build improved confidence into each drug prescription.
The new SLCs website contains a database of changed safety information from all sections of the label that addresses a drug’s safety, including:
- Boxed warning
- Contraindications
- Warnings and precautions
- Adverse reactions
- Drug interactions
- Use in specific populations
- Patient counseling information/patient information/medication guide
Health care providers, health IT vendors, and the public now have access to critical safety data that can impact the health of a patient faster than before.
Providing drug safety labeling changes quickly to health care vendors facilitates having the data further integrated into systems frequently accessed by HCPs. It also carries SLC data downstream for integration into drug information systems and other electronic venues, such as social media, news feeds, and websites, with vast reach among health care professionals, patients, and consumers. Some of these include WebMD, Medscape, American Society of Health-System Pharmacists, PDR.net, Epocrates, First Databank, and Yahoo Health.
The data files are downloadable in a comma-separated values format—a feature that allows information to be gathered faster. There also are hyperlinks to the labeling revisions at Drugs@FDA, and notifications are sent to subscribers via an RSS feed.
The FDA continues to pursue and provide innovative ways to rapidly access important information that protects and advances public health and will work to better identify class labeling changes. The FDA’s primary goal for the redesigned SLC Internet interface is to deliver drug safety labeling changes as quickly and efficiently as possible, to help create and promote better patient health.
Dabigatran vs Warfarin Before Cardioversion of Atrial Arrhythmias
Atrial fibrillation (AF) is the most common cardiac arrhythmia, followed by atrial flutter. Both arrhythmias may increase the risk of stroke. Atrial fibrillation affects about 1% to 2% of the population.1 Patients with atrial flutter often have episodes of AF.
Direct current cardioversion (DCCV) treats atrial arrhythmias by attempting to return the patient to a normal sinus rhythm. When sinus rhythm is restored, cardiac structural changes that might have occurred as a result of AF or atrial flutter may be reversed.2 However, patients undergoing cardioversion are at an increased risk of stroke if a thrombus is present in the left atria. This thrombus may become dislodged during the procedure. Although sinus rhythm may be restored during cardioversion, restoration of the atrial mechanical function may take several weeks, and new thrombi may form during that time. Stroke risk is significantly decreased with anticoagulation.3,4
Current guidelines on antithrombotic therapy for AF and atrial flutter recommend that patients who are appropriate candidates for electrical cardioversion need to be properly anticoagulated for 3 to 4 weeks before and after the procedure if the duration of AF or flutter is > 48 hours or is unknown.5 The practice of anticoagulating candidates needing cardioversion for 3 to 4 weeks before the procedure and 4 weeks after the procedure is based on the theory that it takes about 14 days for a new thrombus to firmly adhere to the atrial wall.6 Therefore 3 to 4 weeks of anticoagulation before cardioversion will prevent new thrombi from forming and theoretically allows enough time for older thrombi to adhere to the atrial wall. Anticoagulation for 4 weeks after cardioversion will prevent new thrombi from forming in the atria during the several weeks that atrial remodeling takes place.3,7 These practices are based on physiologic concepts and observational studies and have not been evaluated in randomized, controlled clinical trials.7
To receive an electrical cardioversion, patients at the VA Portland Health Care System (VAPORHCS) should maintain a therapeutic international normalized ratio (INR), defined as 2.0 to 3.0, for 4 consecutive weeks. The Anticoagulation Clinic monitors patients receiving warfarin for planned DCCV at least weekly. The estimated average time for cardioversion candidates at the VAPORHCS to achieve stability on warfarin is 2 months. Prolonging the time to DCCV may expose symptomatic patients to additional discomfort, lead to further cardiac remodeling, and result in poorer outcomes.
In response to the delays attributed to time needed to achieve INR stability, the VISN 20 Pharmacy and Therapeutics (P&T) committee approved the use of dabigatran prior to cardioversion of AF in October 2011. This quality improvement (QI) project evaluated the time elapsed between initiation of anticoagulation with dabigatran vs warfarin and DCCV and the associated costs of anticoagulation before DCCV.
Methods
A single site, retrospective chart review of patients scheduled for cardioversion from November 2011 to December 2013 was conducted. This QI project was considered exempt from institutional review board approval. VAPORHCS patients aged > 18 years who initiated dabigatran or
warfarin for planned cardioversion of AF or atrial flutter were included in the study. Exclusion criteria included use of dabigatran or warfarin within 3 months before the decision to cardiovert and emergency cardioversion performed within 48 hours of symptom onset. Patients were assigned to either the dabigatran or warfarin group, based on the prescribed anticoagulant. The primary objectives were to evaluate the time elapsed from initiation of anticoagulation to planned cardioversion of AF or atrial flutter and to evaluate treatment costs associated with dabigatran vs warfarin before planned cardioversion of AF or atrial flutter. The secondary objective was to identify reasons for rescheduled or cancelled cardioversions.
Data Collection
Potential patients were identified using the computerized patient record system and VistA. Demographics, including age, gender, indication for cardioversion, calculated CHADS2 score for thromboembolic risk, and calculated HAS-BLED score for bleeding risk were collected to evaluate the potential differences between the 2 groups. Anticoagulation time before cardioversion was evaluated by collecting the first fill date of dabigatran or warfarin and the date that cardioversion was performed. An internal cost analysis was completed. The cost analysis for dabigatran included medication and laboratory costs. The cost analysis for warfarin included costs associated with the medication, laboratory, and pharmacists’ monitoring time.
Statistical Analysis
Statistical analysis was performed using Sigma Plot, Version 12.5 for Windows (System Software, Inc., Chicago, Illinois). Demographic parameters and the primary objectives of time and cost were analyzed using the Mann-Whitney U test. The secondary objective of reasons for rescheduled or cancelled cardioversions was reported using descriptive statistics. A P value of ≥ .05 was considered statistically significant.
Results
Forty dabigatran patients and 68 warfarin patients met inclusion criteria (Table 1). All patients were male with a median age of 65 years in both groups, which is representative of the VA patient population of mostly older adult males. The CHADS2 and HAS-BLED scores were similar between the groups.
Primary Objectives
There was a difference in anticoagulation time before cardioversion between the 2 groups (Table 2). The median number of days that elapsed between initiation of dabigatran and cardioversion was 43 (range 28-120 days) vs 76 days (range 27-278 days) in the warfarin group (P < .001). Patients whose cardioversions were cancelled were not included in the time analysis. The difference in total cost per patient was not statistically significant. The median cost for dabigatran was $277.65 (range: $114.00-$633.65) per patient and $262.58 (range $121.0-$599.31) per patient in the warfarin group (P = .139). All patients, including those whose cardioversions were cancelled, were included in the cost analysis. Costs for cancellations were evaluated from the date of initiation to the date of the cardioversion cancellation decision.
Secondary Objective
In the dabigatran group, 3 patients rescheduled cardioversions and 5 patients cancelled cardioversions. Fourteen warfarin patients rescheduled cardioversions, and 10 patients cancelled cardioversions (Tables 3 and 4). Two dabigatran patients were rescheduled due to missed doses of dabigatran or propafenone and 7 warfarin patients were rescheduled due to out of range INRs (< 2.0) at their preprocedure appointment. Three dabigatran patients presented without symptoms at their preprocedure appointments and their cardioversions were cancelled. Similarly, 5 warfarin patients spontaneously returned to sinus rhythm, and their cardioversions were cancelled.
Discussion
Currently, there are 4 target-specific oral anticoagulants (TSOACs) approved by the FDA for nonvalvular AF: dabigatran, rivaroxaban, apixaban, and edoxaban. Dabigatran is a direct thrombin inhibitor, and rivaroxaban apixaban and edoxaban are factor Xa inhibitors.8-11 The American College of Chest Physicians (CHEST) 2012 guidelines on antithrombotic therapy for AF recommend anticoagulation with warfarin, low molecular weight heparin (LMWH) or dabigatran before cardioversion (grade 1B for all 3 options).5
Anticoagulation with warfarin (Class Ia, Level B), dabigatran, rivaroxaban, or apixaban (Class IIa, Level C) before and after cardioversion was also recommended by the recently published American College of Cardiology/ American Heart Association/ Heart Rhythm Society (ACC/AHA/ HRS) 2014 guidelines for the management of patients with atrial fibrillation.1 Edoxaban was not included since the guidelines were published prior to FDA approval. The main evidence supporting the inclusion of the 3 TSOACs in the 2014 ACC/AHA/HRS guidelines are based on post hoc analyses of the major landmark trials (RE-LY, ROCKET-AF, and ARISTOTLE) evaluating the use of dabigatran, rivaroxaban, and apixaban, respectively, before and after DCCV.12-15 Major adverse events (AEs) were similar between warfarin and the TSOAC comparator in all 3 post hoc analyses.
Low molecular weight heparin was not included as an option for anticoagulation before cardioversion in the ACC/AHA/HRS 2014 guidelines. This is likely due to lack of evidence, as most of the evidence supporting anticoagulation included warfarin and not heparin. The 2 guidelines did not differ in their recommendations on the duration of pre- and postprocedure anticoagulation of 3 and 4 weeks, respectively.1,5 Nor did they differ on the use of transesophageal echocardiogram (TEE) to rule out left atrial thrombus if a patient has not been anticoagulated for 3 weeks before cardioversion.
A recent nonrandomized cohort study by Choo and colleagues evaluated the timing, rescheduling, and cancellation of scheduled DCCV in 193 patients receiving warfarin or dabigatran.16 The study found that patients receiving dabigatran waited 22 fewer days until scheduled DCCV and had lower rates of rescheduled cardioversions than did patients receiving warfarin. The results of this study were similar to the findings at VAPORHCS. The most common reasons for rescheduled or cancelled DCCVs at VAPORHCS were out of range INRs and spontaneous return to sinus rhythm, respectively, which were the same reasons that Choo and colleagues found for rescheduling or cancellations in their study.
Dabigatran patients received drug therapy at VAPORHCS for fewer days before cardioversion than did the patients taking warfarin. The median total cost per patient was about $15 higher in the dabigatran group. Based on these findings and the recommendations of the 2 guidelines, both drugs remain reasonable and appropriate options for patients before cardioversion.
Reasons to Select Dabigatran
If warfarin or a TSOAC is clinically indicated for anticoagulation, then patient preference and nonclinical barriers to safe monitoring may also factor in the decision. Some patients from the surrounding states are referred to VAPORHCS for cardioversions and continue to receive primary care from their facility. Patients receiving primary care and anticoagulation management outside VAPORHCS were not included in this QI project. It may add an additional layer of difficulty to initiate warfarin on a remote patient if the patient does not have access to anticoagulation monitoring locally. Additionally, it may be difficult for the remote anticoagulation providers to communicate information efficiently with the cardiology team at VAPORHCS. It also may be challenging for VAPORHCS to safely manage warfarin in a remote patient without full access to laboratory results and the patient’s primary care provider. For these reasons, dabigatran may be a more favorable option in remote patients referred to VAPORHCS for their cardioversion.
Additionally, dabigatran may be a more appropriate anticoagulant in highly symptomatic AF patients in whom the potential for longer wait times may expose the patient to more symptoms and decreased quality of life. The longer the duration of AF or atrial flutter, the less likely that sinus rhythm will be restored in patients undergoing DCCV.2 A study of 157 patients with AF showed that the adjusted risk for return to AF after DCCV increased if the AF was present for > 2 months before the DCCV.17 If returning patients to sinus rhythm is the highest priority for reversal of cardiac restructuring and symptoms, then a shorter time to DCCV may be preferred, and a TSOAC may be the preferred agent in this case.
Reasons to Select Warfarin
Warfarin may be a more appropriate option in patients with a high bleeding risk due to the current lack of a reversal agent for dabigatran. Dabigatran is not recommended in patients with creatinine clearances < 30 mL/min; thus, warfarin may be a better choice in patients with impaired renal function. It may be reasonable to consider switching a current warfarin patient with a history of variable INRs to a TSOAC in preparation for cardioversion to potentially shorten the time to cardioversion if the patient is highly symptomatic. Low molecular weight heparin may be considered as a last resort for patients who may not be able to tolerate warfarin or TSOACs. However, if LMWH were to be used, it may be more reasonable to consider a TEE-guided DCCV rather than 3 full weeks of anticoagulation with LMWH.
Limitations
There were several limitations to this single site, retrospective, QI project with a small sample size. All patients were older, adult males. Results may not be relevant to other institutions and patient populations, including females and younger patients.
Standardized anticoagulation clinic encounter times (15 minutes for phone call and 5 minutes for letter) were used to calculate pharmacist’s monitoring time costs for warfarin patients. This standardized time did not account for the amount of time spent in monitoring and creating dosing plans that may vary drastically between patients. The time and cost analyses did not account for pharmacy technician reminder phone calls for missed or late INR draws or home health nurse INR draws and visits. Theoretically, patients with home health services have fewer missed or late INRs, and phone encounter times may be shorter between the pharmacist and the nurse vs the pharmacist and the patient.
Finally, it was difficult to capture administrative reasons for delayed DCCV in both groups. In the warfarin group, communication between the anticoagulation clinic and the cardiology team may have been delayed due to staff vacations, sick time, or differences in staff work schedules. In both groups, assessing how procedure scheduling affected wait times was difficult. Procedure room availability, clinic schedules, staff schedules, and preprocedure appointment availability likely impacted patient wait times for DCCV but were difficult to assess and quantify. Finally, power was not calculated for this project.
Conclusions
Based on the recommendations of the CHEST 2012 guidelines, the ACC/AHA/HRS 2014 guidelines, and recent literature, TSOACs are reasonable anticoagulants to consider before and after planned cardioversion of atrial arrhythmias. The findings of this QI project support the
use of either dabigatran or warfarin before a planned cardioversion at VAPORHCS. Several factors should be considered when choosing an oral anticoagulant before a planned DCCV, including indication, duration of anticoagulation, previous anticoagulant use, medication adherence, renal function, risk of thromboembolism vs bleeding risk, and potential need for a reversal agent.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
1. January CT, Wann LS, Alpert JS, et al; ACC/AHA Task Force Members. 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society. Circulation. 2014;130(2):2071-2104.
2. Van Gelder IC, Crijns HJ, van Gilst WH, Hamer HP, Lie KI. Decrease of right and left atrial sizes after direct-current electrical cardioversion in chronic atrial fibrillation. Am J Cardiol. 1991;67(1):93-95.
3. Manning WJ, Leeman DE, Gotch PJ, Come PC. Pulsed Doppler evaluation of atrial mechanical function after electrical cardioversion of atrial fibrillation. J Am Coll Cardiol. 1989;13(3):617-623.
4. Design of a clinical trial for the assessment of cardioversion using transesophageal echocardiography (The ACUTE Multicenter Study). Steering and Publications Committees of the ACUTE Study. Am J Cardiol. 1998;81(7):877-883.
5. You JJ, Singer DE, Howard PA, et al; American College of Chest Physicians. Antithrombotic therapy for atrial fibrillation: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012;141(suppl 2):e531S-e575S.
6. Mancini GB, Goldberger AL. Cardioversion of atrial fibrillation: consideration of embolization, anticoagulation, prophylactic pacemaker, and long-term success. Am Heart J. 1982;104(3):617-621.
7. Berger M, Schweitzer P. Timing of thromboembolic events after electrical cardioversion of atrial fibrillation or flutter: a retrospective analysis. Am J Cardiol. 1998;82(12):1545-1547, A8.
8. Pradaxa [package insert]. Ridgefield, CT: Boehringer Ingelheim Pharmaceuticals Inc; 2015.
9. Xarelto [package insert]. Titusville, NJ: Janssen Pharmaceuticals Inc; 2015.
10. Eliquis [package insert]. Princeton, NJ: Bristol Myers Squibb Company; 2015.
11. Savaysa [package insert]. Parsippany, NJ: Daiichi Sankyo, Inc; 2015.
12. Nagarakanti R, Ezekowitz MD, Oldgren J, et al. Dabigatran versus warfarin in patients with atrial fibrillation: an analysis of patients undergoing cardioversion. Circulation. 2011;123(2):131-136.
13. Connolly SJ, Ezekowitz MD, Yusuf S, et al; RE-LY Steering Committee and Investigators. Dabigatran versus warfarin in patients with atrial fibrillation. N Engl J Med. 2009;361(12):1139-1151.
14. Piccini JP, Stevens SR, Lokhnygina Y, et al; ROCKET AF Steering Committee & Investigators. Outcomes after cardioversion and atrial fibrillation ablation in patients treated with rivaroxaban and warfarin in the ROCKET AF trial. J Am Coll Cardiol. 2013;61(19):1998-2006.
15. Flaker G, Lopes RD, Al-Khatib SM, et al; ARISTOTLE Committees and Investigators. Efficacy and safety of apixaban in patients after cardioversion for atrial fibrillation: insights from the ARISTOTLE trial (Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation). J Am Coll Cardiol. 2014;63(11):1082-1087.
16. Choo WK, Fraser S, Padfield G, et al. Dabigatran improves the efficiency of an elective direct current cardioversion service. Br J Cardiol. 2014;21(1):29-32.
17. Alt E, Ammer R, Lehmann G, et al. Patient characteristics and underlying heart disease as predictors of recurrent atrial fibrillation after internal and external cardioversion in patients treated with oral sotalol. Am Heart J. 1997;134(3):419-425.
Atrial fibrillation (AF) is the most common cardiac arrhythmia, followed by atrial flutter. Both arrhythmias may increase the risk of stroke. Atrial fibrillation affects about 1% to 2% of the population.1 Patients with atrial flutter often have episodes of AF.
Direct current cardioversion (DCCV) treats atrial arrhythmias by attempting to return the patient to a normal sinus rhythm. When sinus rhythm is restored, cardiac structural changes that might have occurred as a result of AF or atrial flutter may be reversed.2 However, patients undergoing cardioversion are at an increased risk of stroke if a thrombus is present in the left atria. This thrombus may become dislodged during the procedure. Although sinus rhythm may be restored during cardioversion, restoration of the atrial mechanical function may take several weeks, and new thrombi may form during that time. Stroke risk is significantly decreased with anticoagulation.3,4
Current guidelines on antithrombotic therapy for AF and atrial flutter recommend that patients who are appropriate candidates for electrical cardioversion need to be properly anticoagulated for 3 to 4 weeks before and after the procedure if the duration of AF or flutter is > 48 hours or is unknown.5 The practice of anticoagulating candidates needing cardioversion for 3 to 4 weeks before the procedure and 4 weeks after the procedure is based on the theory that it takes about 14 days for a new thrombus to firmly adhere to the atrial wall.6 Therefore 3 to 4 weeks of anticoagulation before cardioversion will prevent new thrombi from forming and theoretically allows enough time for older thrombi to adhere to the atrial wall. Anticoagulation for 4 weeks after cardioversion will prevent new thrombi from forming in the atria during the several weeks that atrial remodeling takes place.3,7 These practices are based on physiologic concepts and observational studies and have not been evaluated in randomized, controlled clinical trials.7
To receive an electrical cardioversion, patients at the VA Portland Health Care System (VAPORHCS) should maintain a therapeutic international normalized ratio (INR), defined as 2.0 to 3.0, for 4 consecutive weeks. The Anticoagulation Clinic monitors patients receiving warfarin for planned DCCV at least weekly. The estimated average time for cardioversion candidates at the VAPORHCS to achieve stability on warfarin is 2 months. Prolonging the time to DCCV may expose symptomatic patients to additional discomfort, lead to further cardiac remodeling, and result in poorer outcomes.
In response to the delays attributed to time needed to achieve INR stability, the VISN 20 Pharmacy and Therapeutics (P&T) committee approved the use of dabigatran prior to cardioversion of AF in October 2011. This quality improvement (QI) project evaluated the time elapsed between initiation of anticoagulation with dabigatran vs warfarin and DCCV and the associated costs of anticoagulation before DCCV.
Methods
A single site, retrospective chart review of patients scheduled for cardioversion from November 2011 to December 2013 was conducted. This QI project was considered exempt from institutional review board approval. VAPORHCS patients aged > 18 years who initiated dabigatran or
warfarin for planned cardioversion of AF or atrial flutter were included in the study. Exclusion criteria included use of dabigatran or warfarin within 3 months before the decision to cardiovert and emergency cardioversion performed within 48 hours of symptom onset. Patients were assigned to either the dabigatran or warfarin group, based on the prescribed anticoagulant. The primary objectives were to evaluate the time elapsed from initiation of anticoagulation to planned cardioversion of AF or atrial flutter and to evaluate treatment costs associated with dabigatran vs warfarin before planned cardioversion of AF or atrial flutter. The secondary objective was to identify reasons for rescheduled or cancelled cardioversions.
Data Collection
Potential patients were identified using the computerized patient record system and VistA. Demographics, including age, gender, indication for cardioversion, calculated CHADS2 score for thromboembolic risk, and calculated HAS-BLED score for bleeding risk were collected to evaluate the potential differences between the 2 groups. Anticoagulation time before cardioversion was evaluated by collecting the first fill date of dabigatran or warfarin and the date that cardioversion was performed. An internal cost analysis was completed. The cost analysis for dabigatran included medication and laboratory costs. The cost analysis for warfarin included costs associated with the medication, laboratory, and pharmacists’ monitoring time.
Statistical Analysis
Statistical analysis was performed using Sigma Plot, Version 12.5 for Windows (System Software, Inc., Chicago, Illinois). Demographic parameters and the primary objectives of time and cost were analyzed using the Mann-Whitney U test. The secondary objective of reasons for rescheduled or cancelled cardioversions was reported using descriptive statistics. A P value of ≥ .05 was considered statistically significant.
Results
Forty dabigatran patients and 68 warfarin patients met inclusion criteria (Table 1). All patients were male with a median age of 65 years in both groups, which is representative of the VA patient population of mostly older adult males. The CHADS2 and HAS-BLED scores were similar between the groups.
Primary Objectives
There was a difference in anticoagulation time before cardioversion between the 2 groups (Table 2). The median number of days that elapsed between initiation of dabigatran and cardioversion was 43 (range 28-120 days) vs 76 days (range 27-278 days) in the warfarin group (P < .001). Patients whose cardioversions were cancelled were not included in the time analysis. The difference in total cost per patient was not statistically significant. The median cost for dabigatran was $277.65 (range: $114.00-$633.65) per patient and $262.58 (range $121.0-$599.31) per patient in the warfarin group (P = .139). All patients, including those whose cardioversions were cancelled, were included in the cost analysis. Costs for cancellations were evaluated from the date of initiation to the date of the cardioversion cancellation decision.
Secondary Objective
In the dabigatran group, 3 patients rescheduled cardioversions and 5 patients cancelled cardioversions. Fourteen warfarin patients rescheduled cardioversions, and 10 patients cancelled cardioversions (Tables 3 and 4). Two dabigatran patients were rescheduled due to missed doses of dabigatran or propafenone and 7 warfarin patients were rescheduled due to out of range INRs (< 2.0) at their preprocedure appointment. Three dabigatran patients presented without symptoms at their preprocedure appointments and their cardioversions were cancelled. Similarly, 5 warfarin patients spontaneously returned to sinus rhythm, and their cardioversions were cancelled.
Discussion
Currently, there are 4 target-specific oral anticoagulants (TSOACs) approved by the FDA for nonvalvular AF: dabigatran, rivaroxaban, apixaban, and edoxaban. Dabigatran is a direct thrombin inhibitor, and rivaroxaban apixaban and edoxaban are factor Xa inhibitors.8-11 The American College of Chest Physicians (CHEST) 2012 guidelines on antithrombotic therapy for AF recommend anticoagulation with warfarin, low molecular weight heparin (LMWH) or dabigatran before cardioversion (grade 1B for all 3 options).5
Anticoagulation with warfarin (Class Ia, Level B), dabigatran, rivaroxaban, or apixaban (Class IIa, Level C) before and after cardioversion was also recommended by the recently published American College of Cardiology/ American Heart Association/ Heart Rhythm Society (ACC/AHA/ HRS) 2014 guidelines for the management of patients with atrial fibrillation.1 Edoxaban was not included since the guidelines were published prior to FDA approval. The main evidence supporting the inclusion of the 3 TSOACs in the 2014 ACC/AHA/HRS guidelines are based on post hoc analyses of the major landmark trials (RE-LY, ROCKET-AF, and ARISTOTLE) evaluating the use of dabigatran, rivaroxaban, and apixaban, respectively, before and after DCCV.12-15 Major adverse events (AEs) were similar between warfarin and the TSOAC comparator in all 3 post hoc analyses.
Low molecular weight heparin was not included as an option for anticoagulation before cardioversion in the ACC/AHA/HRS 2014 guidelines. This is likely due to lack of evidence, as most of the evidence supporting anticoagulation included warfarin and not heparin. The 2 guidelines did not differ in their recommendations on the duration of pre- and postprocedure anticoagulation of 3 and 4 weeks, respectively.1,5 Nor did they differ on the use of transesophageal echocardiogram (TEE) to rule out left atrial thrombus if a patient has not been anticoagulated for 3 weeks before cardioversion.
A recent nonrandomized cohort study by Choo and colleagues evaluated the timing, rescheduling, and cancellation of scheduled DCCV in 193 patients receiving warfarin or dabigatran.16 The study found that patients receiving dabigatran waited 22 fewer days until scheduled DCCV and had lower rates of rescheduled cardioversions than did patients receiving warfarin. The results of this study were similar to the findings at VAPORHCS. The most common reasons for rescheduled or cancelled DCCVs at VAPORHCS were out of range INRs and spontaneous return to sinus rhythm, respectively, which were the same reasons that Choo and colleagues found for rescheduling or cancellations in their study.
Dabigatran patients received drug therapy at VAPORHCS for fewer days before cardioversion than did the patients taking warfarin. The median total cost per patient was about $15 higher in the dabigatran group. Based on these findings and the recommendations of the 2 guidelines, both drugs remain reasonable and appropriate options for patients before cardioversion.
Reasons to Select Dabigatran
If warfarin or a TSOAC is clinically indicated for anticoagulation, then patient preference and nonclinical barriers to safe monitoring may also factor in the decision. Some patients from the surrounding states are referred to VAPORHCS for cardioversions and continue to receive primary care from their facility. Patients receiving primary care and anticoagulation management outside VAPORHCS were not included in this QI project. It may add an additional layer of difficulty to initiate warfarin on a remote patient if the patient does not have access to anticoagulation monitoring locally. Additionally, it may be difficult for the remote anticoagulation providers to communicate information efficiently with the cardiology team at VAPORHCS. It also may be challenging for VAPORHCS to safely manage warfarin in a remote patient without full access to laboratory results and the patient’s primary care provider. For these reasons, dabigatran may be a more favorable option in remote patients referred to VAPORHCS for their cardioversion.
Additionally, dabigatran may be a more appropriate anticoagulant in highly symptomatic AF patients in whom the potential for longer wait times may expose the patient to more symptoms and decreased quality of life. The longer the duration of AF or atrial flutter, the less likely that sinus rhythm will be restored in patients undergoing DCCV.2 A study of 157 patients with AF showed that the adjusted risk for return to AF after DCCV increased if the AF was present for > 2 months before the DCCV.17 If returning patients to sinus rhythm is the highest priority for reversal of cardiac restructuring and symptoms, then a shorter time to DCCV may be preferred, and a TSOAC may be the preferred agent in this case.
Reasons to Select Warfarin
Warfarin may be a more appropriate option in patients with a high bleeding risk due to the current lack of a reversal agent for dabigatran. Dabigatran is not recommended in patients with creatinine clearances < 30 mL/min; thus, warfarin may be a better choice in patients with impaired renal function. It may be reasonable to consider switching a current warfarin patient with a history of variable INRs to a TSOAC in preparation for cardioversion to potentially shorten the time to cardioversion if the patient is highly symptomatic. Low molecular weight heparin may be considered as a last resort for patients who may not be able to tolerate warfarin or TSOACs. However, if LMWH were to be used, it may be more reasonable to consider a TEE-guided DCCV rather than 3 full weeks of anticoagulation with LMWH.
Limitations
There were several limitations to this single site, retrospective, QI project with a small sample size. All patients were older, adult males. Results may not be relevant to other institutions and patient populations, including females and younger patients.
Standardized anticoagulation clinic encounter times (15 minutes for phone call and 5 minutes for letter) were used to calculate pharmacist’s monitoring time costs for warfarin patients. This standardized time did not account for the amount of time spent in monitoring and creating dosing plans that may vary drastically between patients. The time and cost analyses did not account for pharmacy technician reminder phone calls for missed or late INR draws or home health nurse INR draws and visits. Theoretically, patients with home health services have fewer missed or late INRs, and phone encounter times may be shorter between the pharmacist and the nurse vs the pharmacist and the patient.
Finally, it was difficult to capture administrative reasons for delayed DCCV in both groups. In the warfarin group, communication between the anticoagulation clinic and the cardiology team may have been delayed due to staff vacations, sick time, or differences in staff work schedules. In both groups, assessing how procedure scheduling affected wait times was difficult. Procedure room availability, clinic schedules, staff schedules, and preprocedure appointment availability likely impacted patient wait times for DCCV but were difficult to assess and quantify. Finally, power was not calculated for this project.
Conclusions
Based on the recommendations of the CHEST 2012 guidelines, the ACC/AHA/HRS 2014 guidelines, and recent literature, TSOACs are reasonable anticoagulants to consider before and after planned cardioversion of atrial arrhythmias. The findings of this QI project support the
use of either dabigatran or warfarin before a planned cardioversion at VAPORHCS. Several factors should be considered when choosing an oral anticoagulant before a planned DCCV, including indication, duration of anticoagulation, previous anticoagulant use, medication adherence, renal function, risk of thromboembolism vs bleeding risk, and potential need for a reversal agent.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
Atrial fibrillation (AF) is the most common cardiac arrhythmia, followed by atrial flutter. Both arrhythmias may increase the risk of stroke. Atrial fibrillation affects about 1% to 2% of the population.1 Patients with atrial flutter often have episodes of AF.
Direct current cardioversion (DCCV) treats atrial arrhythmias by attempting to return the patient to a normal sinus rhythm. When sinus rhythm is restored, cardiac structural changes that might have occurred as a result of AF or atrial flutter may be reversed.2 However, patients undergoing cardioversion are at an increased risk of stroke if a thrombus is present in the left atria. This thrombus may become dislodged during the procedure. Although sinus rhythm may be restored during cardioversion, restoration of the atrial mechanical function may take several weeks, and new thrombi may form during that time. Stroke risk is significantly decreased with anticoagulation.3,4
Current guidelines on antithrombotic therapy for AF and atrial flutter recommend that patients who are appropriate candidates for electrical cardioversion need to be properly anticoagulated for 3 to 4 weeks before and after the procedure if the duration of AF or flutter is > 48 hours or is unknown.5 The practice of anticoagulating candidates needing cardioversion for 3 to 4 weeks before the procedure and 4 weeks after the procedure is based on the theory that it takes about 14 days for a new thrombus to firmly adhere to the atrial wall.6 Therefore 3 to 4 weeks of anticoagulation before cardioversion will prevent new thrombi from forming and theoretically allows enough time for older thrombi to adhere to the atrial wall. Anticoagulation for 4 weeks after cardioversion will prevent new thrombi from forming in the atria during the several weeks that atrial remodeling takes place.3,7 These practices are based on physiologic concepts and observational studies and have not been evaluated in randomized, controlled clinical trials.7
To receive an electrical cardioversion, patients at the VA Portland Health Care System (VAPORHCS) should maintain a therapeutic international normalized ratio (INR), defined as 2.0 to 3.0, for 4 consecutive weeks. The Anticoagulation Clinic monitors patients receiving warfarin for planned DCCV at least weekly. The estimated average time for cardioversion candidates at the VAPORHCS to achieve stability on warfarin is 2 months. Prolonging the time to DCCV may expose symptomatic patients to additional discomfort, lead to further cardiac remodeling, and result in poorer outcomes.
In response to the delays attributed to time needed to achieve INR stability, the VISN 20 Pharmacy and Therapeutics (P&T) committee approved the use of dabigatran prior to cardioversion of AF in October 2011. This quality improvement (QI) project evaluated the time elapsed between initiation of anticoagulation with dabigatran vs warfarin and DCCV and the associated costs of anticoagulation before DCCV.
Methods
A single site, retrospective chart review of patients scheduled for cardioversion from November 2011 to December 2013 was conducted. This QI project was considered exempt from institutional review board approval. VAPORHCS patients aged > 18 years who initiated dabigatran or
warfarin for planned cardioversion of AF or atrial flutter were included in the study. Exclusion criteria included use of dabigatran or warfarin within 3 months before the decision to cardiovert and emergency cardioversion performed within 48 hours of symptom onset. Patients were assigned to either the dabigatran or warfarin group, based on the prescribed anticoagulant. The primary objectives were to evaluate the time elapsed from initiation of anticoagulation to planned cardioversion of AF or atrial flutter and to evaluate treatment costs associated with dabigatran vs warfarin before planned cardioversion of AF or atrial flutter. The secondary objective was to identify reasons for rescheduled or cancelled cardioversions.
Data Collection
Potential patients were identified using the computerized patient record system and VistA. Demographics, including age, gender, indication for cardioversion, calculated CHADS2 score for thromboembolic risk, and calculated HAS-BLED score for bleeding risk were collected to evaluate the potential differences between the 2 groups. Anticoagulation time before cardioversion was evaluated by collecting the first fill date of dabigatran or warfarin and the date that cardioversion was performed. An internal cost analysis was completed. The cost analysis for dabigatran included medication and laboratory costs. The cost analysis for warfarin included costs associated with the medication, laboratory, and pharmacists’ monitoring time.
Statistical Analysis
Statistical analysis was performed using Sigma Plot, Version 12.5 for Windows (System Software, Inc., Chicago, Illinois). Demographic parameters and the primary objectives of time and cost were analyzed using the Mann-Whitney U test. The secondary objective of reasons for rescheduled or cancelled cardioversions was reported using descriptive statistics. A P value of ≥ .05 was considered statistically significant.
Results
Forty dabigatran patients and 68 warfarin patients met inclusion criteria (Table 1). All patients were male with a median age of 65 years in both groups, which is representative of the VA patient population of mostly older adult males. The CHADS2 and HAS-BLED scores were similar between the groups.
Primary Objectives
There was a difference in anticoagulation time before cardioversion between the 2 groups (Table 2). The median number of days that elapsed between initiation of dabigatran and cardioversion was 43 (range 28-120 days) vs 76 days (range 27-278 days) in the warfarin group (P < .001). Patients whose cardioversions were cancelled were not included in the time analysis. The difference in total cost per patient was not statistically significant. The median cost for dabigatran was $277.65 (range: $114.00-$633.65) per patient and $262.58 (range $121.0-$599.31) per patient in the warfarin group (P = .139). All patients, including those whose cardioversions were cancelled, were included in the cost analysis. Costs for cancellations were evaluated from the date of initiation to the date of the cardioversion cancellation decision.
Secondary Objective
In the dabigatran group, 3 patients rescheduled cardioversions and 5 patients cancelled cardioversions. Fourteen warfarin patients rescheduled cardioversions, and 10 patients cancelled cardioversions (Tables 3 and 4). Two dabigatran patients were rescheduled due to missed doses of dabigatran or propafenone and 7 warfarin patients were rescheduled due to out of range INRs (< 2.0) at their preprocedure appointment. Three dabigatran patients presented without symptoms at their preprocedure appointments and their cardioversions were cancelled. Similarly, 5 warfarin patients spontaneously returned to sinus rhythm, and their cardioversions were cancelled.
Discussion
Currently, there are 4 target-specific oral anticoagulants (TSOACs) approved by the FDA for nonvalvular AF: dabigatran, rivaroxaban, apixaban, and edoxaban. Dabigatran is a direct thrombin inhibitor, and rivaroxaban apixaban and edoxaban are factor Xa inhibitors.8-11 The American College of Chest Physicians (CHEST) 2012 guidelines on antithrombotic therapy for AF recommend anticoagulation with warfarin, low molecular weight heparin (LMWH) or dabigatran before cardioversion (grade 1B for all 3 options).5
Anticoagulation with warfarin (Class Ia, Level B), dabigatran, rivaroxaban, or apixaban (Class IIa, Level C) before and after cardioversion was also recommended by the recently published American College of Cardiology/ American Heart Association/ Heart Rhythm Society (ACC/AHA/ HRS) 2014 guidelines for the management of patients with atrial fibrillation.1 Edoxaban was not included since the guidelines were published prior to FDA approval. The main evidence supporting the inclusion of the 3 TSOACs in the 2014 ACC/AHA/HRS guidelines are based on post hoc analyses of the major landmark trials (RE-LY, ROCKET-AF, and ARISTOTLE) evaluating the use of dabigatran, rivaroxaban, and apixaban, respectively, before and after DCCV.12-15 Major adverse events (AEs) were similar between warfarin and the TSOAC comparator in all 3 post hoc analyses.
Low molecular weight heparin was not included as an option for anticoagulation before cardioversion in the ACC/AHA/HRS 2014 guidelines. This is likely due to lack of evidence, as most of the evidence supporting anticoagulation included warfarin and not heparin. The 2 guidelines did not differ in their recommendations on the duration of pre- and postprocedure anticoagulation of 3 and 4 weeks, respectively.1,5 Nor did they differ on the use of transesophageal echocardiogram (TEE) to rule out left atrial thrombus if a patient has not been anticoagulated for 3 weeks before cardioversion.
A recent nonrandomized cohort study by Choo and colleagues evaluated the timing, rescheduling, and cancellation of scheduled DCCV in 193 patients receiving warfarin or dabigatran.16 The study found that patients receiving dabigatran waited 22 fewer days until scheduled DCCV and had lower rates of rescheduled cardioversions than did patients receiving warfarin. The results of this study were similar to the findings at VAPORHCS. The most common reasons for rescheduled or cancelled DCCVs at VAPORHCS were out of range INRs and spontaneous return to sinus rhythm, respectively, which were the same reasons that Choo and colleagues found for rescheduling or cancellations in their study.
Dabigatran patients received drug therapy at VAPORHCS for fewer days before cardioversion than did the patients taking warfarin. The median total cost per patient was about $15 higher in the dabigatran group. Based on these findings and the recommendations of the 2 guidelines, both drugs remain reasonable and appropriate options for patients before cardioversion.
Reasons to Select Dabigatran
If warfarin or a TSOAC is clinically indicated for anticoagulation, then patient preference and nonclinical barriers to safe monitoring may also factor in the decision. Some patients from the surrounding states are referred to VAPORHCS for cardioversions and continue to receive primary care from their facility. Patients receiving primary care and anticoagulation management outside VAPORHCS were not included in this QI project. It may add an additional layer of difficulty to initiate warfarin on a remote patient if the patient does not have access to anticoagulation monitoring locally. Additionally, it may be difficult for the remote anticoagulation providers to communicate information efficiently with the cardiology team at VAPORHCS. It also may be challenging for VAPORHCS to safely manage warfarin in a remote patient without full access to laboratory results and the patient’s primary care provider. For these reasons, dabigatran may be a more favorable option in remote patients referred to VAPORHCS for their cardioversion.
Additionally, dabigatran may be a more appropriate anticoagulant in highly symptomatic AF patients in whom the potential for longer wait times may expose the patient to more symptoms and decreased quality of life. The longer the duration of AF or atrial flutter, the less likely that sinus rhythm will be restored in patients undergoing DCCV.2 A study of 157 patients with AF showed that the adjusted risk for return to AF after DCCV increased if the AF was present for > 2 months before the DCCV.17 If returning patients to sinus rhythm is the highest priority for reversal of cardiac restructuring and symptoms, then a shorter time to DCCV may be preferred, and a TSOAC may be the preferred agent in this case.
Reasons to Select Warfarin
Warfarin may be a more appropriate option in patients with a high bleeding risk due to the current lack of a reversal agent for dabigatran. Dabigatran is not recommended in patients with creatinine clearances < 30 mL/min; thus, warfarin may be a better choice in patients with impaired renal function. It may be reasonable to consider switching a current warfarin patient with a history of variable INRs to a TSOAC in preparation for cardioversion to potentially shorten the time to cardioversion if the patient is highly symptomatic. Low molecular weight heparin may be considered as a last resort for patients who may not be able to tolerate warfarin or TSOACs. However, if LMWH were to be used, it may be more reasonable to consider a TEE-guided DCCV rather than 3 full weeks of anticoagulation with LMWH.
Limitations
There were several limitations to this single site, retrospective, QI project with a small sample size. All patients were older, adult males. Results may not be relevant to other institutions and patient populations, including females and younger patients.
Standardized anticoagulation clinic encounter times (15 minutes for phone call and 5 minutes for letter) were used to calculate pharmacist’s monitoring time costs for warfarin patients. This standardized time did not account for the amount of time spent in monitoring and creating dosing plans that may vary drastically between patients. The time and cost analyses did not account for pharmacy technician reminder phone calls for missed or late INR draws or home health nurse INR draws and visits. Theoretically, patients with home health services have fewer missed or late INRs, and phone encounter times may be shorter between the pharmacist and the nurse vs the pharmacist and the patient.
Finally, it was difficult to capture administrative reasons for delayed DCCV in both groups. In the warfarin group, communication between the anticoagulation clinic and the cardiology team may have been delayed due to staff vacations, sick time, or differences in staff work schedules. In both groups, assessing how procedure scheduling affected wait times was difficult. Procedure room availability, clinic schedules, staff schedules, and preprocedure appointment availability likely impacted patient wait times for DCCV but were difficult to assess and quantify. Finally, power was not calculated for this project.
Conclusions
Based on the recommendations of the CHEST 2012 guidelines, the ACC/AHA/HRS 2014 guidelines, and recent literature, TSOACs are reasonable anticoagulants to consider before and after planned cardioversion of atrial arrhythmias. The findings of this QI project support the
use of either dabigatran or warfarin before a planned cardioversion at VAPORHCS. Several factors should be considered when choosing an oral anticoagulant before a planned DCCV, including indication, duration of anticoagulation, previous anticoagulant use, medication adherence, renal function, risk of thromboembolism vs bleeding risk, and potential need for a reversal agent.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
1. January CT, Wann LS, Alpert JS, et al; ACC/AHA Task Force Members. 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society. Circulation. 2014;130(2):2071-2104.
2. Van Gelder IC, Crijns HJ, van Gilst WH, Hamer HP, Lie KI. Decrease of right and left atrial sizes after direct-current electrical cardioversion in chronic atrial fibrillation. Am J Cardiol. 1991;67(1):93-95.
3. Manning WJ, Leeman DE, Gotch PJ, Come PC. Pulsed Doppler evaluation of atrial mechanical function after electrical cardioversion of atrial fibrillation. J Am Coll Cardiol. 1989;13(3):617-623.
4. Design of a clinical trial for the assessment of cardioversion using transesophageal echocardiography (The ACUTE Multicenter Study). Steering and Publications Committees of the ACUTE Study. Am J Cardiol. 1998;81(7):877-883.
5. You JJ, Singer DE, Howard PA, et al; American College of Chest Physicians. Antithrombotic therapy for atrial fibrillation: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012;141(suppl 2):e531S-e575S.
6. Mancini GB, Goldberger AL. Cardioversion of atrial fibrillation: consideration of embolization, anticoagulation, prophylactic pacemaker, and long-term success. Am Heart J. 1982;104(3):617-621.
7. Berger M, Schweitzer P. Timing of thromboembolic events after electrical cardioversion of atrial fibrillation or flutter: a retrospective analysis. Am J Cardiol. 1998;82(12):1545-1547, A8.
8. Pradaxa [package insert]. Ridgefield, CT: Boehringer Ingelheim Pharmaceuticals Inc; 2015.
9. Xarelto [package insert]. Titusville, NJ: Janssen Pharmaceuticals Inc; 2015.
10. Eliquis [package insert]. Princeton, NJ: Bristol Myers Squibb Company; 2015.
11. Savaysa [package insert]. Parsippany, NJ: Daiichi Sankyo, Inc; 2015.
12. Nagarakanti R, Ezekowitz MD, Oldgren J, et al. Dabigatran versus warfarin in patients with atrial fibrillation: an analysis of patients undergoing cardioversion. Circulation. 2011;123(2):131-136.
13. Connolly SJ, Ezekowitz MD, Yusuf S, et al; RE-LY Steering Committee and Investigators. Dabigatran versus warfarin in patients with atrial fibrillation. N Engl J Med. 2009;361(12):1139-1151.
14. Piccini JP, Stevens SR, Lokhnygina Y, et al; ROCKET AF Steering Committee & Investigators. Outcomes after cardioversion and atrial fibrillation ablation in patients treated with rivaroxaban and warfarin in the ROCKET AF trial. J Am Coll Cardiol. 2013;61(19):1998-2006.
15. Flaker G, Lopes RD, Al-Khatib SM, et al; ARISTOTLE Committees and Investigators. Efficacy and safety of apixaban in patients after cardioversion for atrial fibrillation: insights from the ARISTOTLE trial (Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation). J Am Coll Cardiol. 2014;63(11):1082-1087.
16. Choo WK, Fraser S, Padfield G, et al. Dabigatran improves the efficiency of an elective direct current cardioversion service. Br J Cardiol. 2014;21(1):29-32.
17. Alt E, Ammer R, Lehmann G, et al. Patient characteristics and underlying heart disease as predictors of recurrent atrial fibrillation after internal and external cardioversion in patients treated with oral sotalol. Am Heart J. 1997;134(3):419-425.
1. January CT, Wann LS, Alpert JS, et al; ACC/AHA Task Force Members. 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society. Circulation. 2014;130(2):2071-2104.
2. Van Gelder IC, Crijns HJ, van Gilst WH, Hamer HP, Lie KI. Decrease of right and left atrial sizes after direct-current electrical cardioversion in chronic atrial fibrillation. Am J Cardiol. 1991;67(1):93-95.
3. Manning WJ, Leeman DE, Gotch PJ, Come PC. Pulsed Doppler evaluation of atrial mechanical function after electrical cardioversion of atrial fibrillation. J Am Coll Cardiol. 1989;13(3):617-623.
4. Design of a clinical trial for the assessment of cardioversion using transesophageal echocardiography (The ACUTE Multicenter Study). Steering and Publications Committees of the ACUTE Study. Am J Cardiol. 1998;81(7):877-883.
5. You JJ, Singer DE, Howard PA, et al; American College of Chest Physicians. Antithrombotic therapy for atrial fibrillation: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012;141(suppl 2):e531S-e575S.
6. Mancini GB, Goldberger AL. Cardioversion of atrial fibrillation: consideration of embolization, anticoagulation, prophylactic pacemaker, and long-term success. Am Heart J. 1982;104(3):617-621.
7. Berger M, Schweitzer P. Timing of thromboembolic events after electrical cardioversion of atrial fibrillation or flutter: a retrospective analysis. Am J Cardiol. 1998;82(12):1545-1547, A8.
8. Pradaxa [package insert]. Ridgefield, CT: Boehringer Ingelheim Pharmaceuticals Inc; 2015.
9. Xarelto [package insert]. Titusville, NJ: Janssen Pharmaceuticals Inc; 2015.
10. Eliquis [package insert]. Princeton, NJ: Bristol Myers Squibb Company; 2015.
11. Savaysa [package insert]. Parsippany, NJ: Daiichi Sankyo, Inc; 2015.
12. Nagarakanti R, Ezekowitz MD, Oldgren J, et al. Dabigatran versus warfarin in patients with atrial fibrillation: an analysis of patients undergoing cardioversion. Circulation. 2011;123(2):131-136.
13. Connolly SJ, Ezekowitz MD, Yusuf S, et al; RE-LY Steering Committee and Investigators. Dabigatran versus warfarin in patients with atrial fibrillation. N Engl J Med. 2009;361(12):1139-1151.
14. Piccini JP, Stevens SR, Lokhnygina Y, et al; ROCKET AF Steering Committee & Investigators. Outcomes after cardioversion and atrial fibrillation ablation in patients treated with rivaroxaban and warfarin in the ROCKET AF trial. J Am Coll Cardiol. 2013;61(19):1998-2006.
15. Flaker G, Lopes RD, Al-Khatib SM, et al; ARISTOTLE Committees and Investigators. Efficacy and safety of apixaban in patients after cardioversion for atrial fibrillation: insights from the ARISTOTLE trial (Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation). J Am Coll Cardiol. 2014;63(11):1082-1087.
16. Choo WK, Fraser S, Padfield G, et al. Dabigatran improves the efficiency of an elective direct current cardioversion service. Br J Cardiol. 2014;21(1):29-32.
17. Alt E, Ammer R, Lehmann G, et al. Patient characteristics and underlying heart disease as predictors of recurrent atrial fibrillation after internal and external cardioversion in patients treated with oral sotalol. Am Heart J. 1997;134(3):419-425.
The Impact of Obesity on Simvastatin for Lowering LDL-C Among Veterans
More than one-third of Americans and > 20% of veterans have obesity with a body mass index (BMI) ≥ 30 kg/m2.1,2 It is well documented that patients with obesity have altered lipid metabolism, drug distribution, and drug clearance.3-5 As many as 8.2 million Americans may receive statin (3-hydroxymethylglutaryl coenzyme A reductase inhibitors) prescriptions if the American College of Cardiology/American Heart Association 2013 Cholesterol Guidelines are followed; therefore, it is important to examine how the efficacy of these drugs is altered in patients with obesity.6
Multiple studies have examined the benefits of statin therapy through lowering low-density lipoprotein cholesterol (LDL-C); however, few have examined the impact of obesity on statin efficacy. For example, only 18% of subjects in the Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) trial were classified as having obesity, and subjects in the Scandinavian Simvastatin Survival Study (4S) trial had a mean BMI of only 26 kg/m2.7,8 Though statins decreased mortality in both of these studies, it is unknown whether the lipid-lowering effects were the same for participants with and without obesity. The Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS) demonstrated a decrease in major cardiovascular events and all-cause mortality with atorvastatin 10 mg daily therapy in a sample where more than one-third of subjects had obesity.9 However, the mean baseline BMI of subjects in both study groups was only 28 kg/m2, and outcomes for those with and without obesity were not compared.9
Studies that have examined statin efficacy in those with and without obesity include the Heart Protection Study (HPS), a post hoc analysis of the West of Scotland Coronary Prevention Study (WOSCOPS), and a meta-analysis by Blassetto and colleagues. The HPS examined the event rate of vascular events with simvastatin 40 mg daily in patients with diabetes mellitus (DM).10 Though these subgroups were compared in HPS, no statistical difference was demonstrated between these groups for the rate of vascular events among those with and without DM.10 However, the obesity subgroup’s event rate ratios were consistently higher than were those for the nonobese group.10
A post hoc analysis of WOSCOPS examined obesity as a factor for change in LDL-C with pravastatin 40 mg therapy.11 Though the authors found that no significant difference was present between those with and those without obesity, the data supporting this claim were not disclosed, which makes drawing clinical conclusions from this analysis difficult.11 A meta-analysis by Blassetto and colleagues examined the association between rosuvastatin’s efficacy in lowering LDL-C among the subgroups of hypertension, atherosclerosis, type 2 DM, and obesity.12 Though these subgroups were not compared statistically, the obesity subgroup had the lowest mean percent change in lowering LDL-C. Moreover, patients without obesity were not examined as a subgroup.12
With the expected increase in statin therapy and a significant portion of the U.S. population having obesity, it is necessary to determine if obesity alters the efficacy of statins. This study was conducted to determine the effect of obesity on the percent change in LDL-C with statin therapy within a veteran population.
Methods
This study was a retrospective review examining follow-up data from January 1, 2009 to July 1, 2014 from the VA Midsouth Healthcare Network. This network services more than 350,000 patients each year in Tennessee, Kentucky, and West Virgin
Patients were excluded if they had received treatment for hyperlipidemia (niacin, colestyramine, colestipol, colesevelam, other statins, gemfibrozil, fenofibrate, omega-3 ethyl esters, ezetimibe) during the 6 weeks prior to the initial fill date of the statin prescription. Patients whose simvastatin therapy did not span the follow-up period from the time of filling to the follow-up lipid panel were excluded, as were those who had not filled a simvastatin prescription within 30 days of their baseline lipid panel. Also excluded were patients who were newly established at the VA, pregnant, or receiving concomitant antihyperlipidemia agents, dialysis, or interacting medications (tacrolimus, cyclosporine, atazanavir, darunavir, nelfinavir, saquinavir, ritonavir, indinavir, lopinavir, tipranavir, fosamprenavir, fluconazole, voriconazole, itraconazole, voriconazole, posaconazole, amiodarone, or colchicine). Patients with a BMI < 18 kg/m2, hepatic failure as measured by an aspartate transaminase/alanine transaminase (AST/ALT) ratio > 3 times the upper limit of normal, hepatitis, a history of alcoholism, any change in statin dose prior to follow-up cholesterol values, or no follow-up LDL-C values also were excluded.
The baseline data collected included age, sex, weight, height, BMI, hemoglobin A1c, LDL-C, ALT/AST, and serum creatinine (SCr). All other laboratory results were required to be within 270 days of the time the lipid panel was obtained. The index date was set as the date the initial prescription was filled between February 1, 2009 and April 1, 2014. Follow-up levels for LDL-C were obtained 40 to 95 days after the index date. Direct LDL-C values were preferred unless only calculated values were available. Calculated LDL-C values were determined by using the Friedewald equation. An audit of 150 patient charts was conducted to ensure the integrity of data pulled from the database.
The percent changes in LDL-C were calculated for those with and without obesity for both simvastatin 20 mg daily and simvastatin 40 mg daily. The primary outcome was the percent change in LDL-C from baseline. All laboratory values were compared using independent 2-tailed t tests with α set to .05. To have an 80% chance of detecting a 5% difference in percent change in LDL-C between the experimental and control groups, 129 patients were required. To determine whether an association was present, a correlation between BMI and percent change in LDL-C was conducted. All statistics were conducted using SAS software (Cary, North Carolina).
Results
From January 2009 through July 2014, 35,216 patients were initially screened. The majority of patients did not have a baseline LDL-C value and were excluded. A total of 1,183 patients with simvastatin 20 mg daily (BMI < 30 = 661; BMI ≥ 30 = 1,122) and 478 patients with simvastatin 40 mg daily (BMI < 30 = 259; BMI ≥ 30 = 219) met the inclusion criteria.
Baseline characteristics were similar between groups except for a slightly higher age in both groups without obesity (Table). Hepatic and renal serum markers indicated a baseline of adequate organ function for drug clearance for all groups. The mean baseline BMI of those without obesity was about 26 kg/m2, which is considered overweight. Baseline LDL-C values were clinically similar for those with and without obesity, though statistically different (145 mg/dL for the nonobese group and 141 mg/dL for the obese group, P < .05). The percent change in LDL-C was not statistically significant for those with and without obesity for simvastatin 20 mg daily (P = .293) or simvastatin 40 mg daily (P = .2773) (Figure). No correlation was found between the continuous percent change in LDL-C and continuous BMI for either simvastatin dosage (r2 = 0.0016 and 0.0028, respectively).
Discussion
In this retrospective chart review, it was determined that obesity did not affect the percent change in LDL-C from baseline with statin therapy. The HPS found similar results as a secondary endpoint, although that study was underpowered.10 In this study, all groups met power, and there was still no difference between those with and without obesity.
Nicholls and colleagues examined REVERSAL study data to determine whether BMI greater than the median BMI impacted inflammatory markers or lipid levels with atorvastatin 80 mg daily or pravastatin 40 mg daily. The REVERSAL study authors found no difference in percent change LDL-C between those above the median BMI compared with those below the median BMI for patients on pravastatin therapy. However, the authors did find a difference in percent change LDL-C with atorvastatin therapy.13 No difference in percent change LDL-C was present with simvastatin therapy in this study. As simvastatin is more lipophilic than is atorvastatin, lipophilicity remains an area for further study for statin therapy in patients with obesity.
The surrogate marker of percent change in LDL-C was used for the primary outcome in this study. The ACC/AHA 2013 guidelines and the National Lipid Association 2014 guidelines recommend an alternative goal of 30% to 50% change in LDL-C from baseline.14,15 Using this clinically relevant marker compensated for differences in baseline LDL-C and limited the effect of these differences on the primary outcome of this study.
Limitations
This study did not include patients who were underweight (BMI < 18 kg/m2), as these patients have previously demonstrated decreased outcomes with statin therapy.16 However, this limits these data to only those patients that have a BMI of at least 18 kg/m2. Limitations of this study also included the inability to consider adherence and lifestyle changes. These limitations were unavoidable due to the nature of a retrospective chart review.
Conclusion
The prevalence of obesity is increasing, and it is a disease that alters pharmacokinetics and lipid metabolism. Though this study did not find a difference between the LDL-C-lowering efficacy of simvastatin in those with and without obesity, continued study of the effect of obesity on the efficacy of medications is vital.
Acknowledgments
This material is the result of work supported with resources and the use of facilities at the James H. Qullen VAMC in Mountain Home, Tennessee.
1. Ogden CL, Carroll MD, Kit BK, Flegal KM. Prevalence of childhood and adult obesity in the United States, 2011-2012. JAMA. 2014;311(8):806-814.
2. Shen Y, Sambamoorthi U, Rajan M, Miller D, Banerjea R, Pogach L. Obesity and expenditures among elderly Veterans Health Administration users with diabetes. Popul Health Manag. 2009;12(5):255-264.
3. Chan DC, Watts GF, Wang J, Hegele RA, van Bockxmeer FM, Barrett PH. Variation in Niemann-Pick C1-like 1 gene as a determinant of apolipoprotein B-100 kinetics and response to statin therapy in centrally obese men. Clin Endocrinol (Oxf). 2008;69(1):45-51.
4. Cheymol G. Effects of obesity on pharmacokinetics implications for drug therapy. Clin Pharmacokinet. 2000;39(3):215-231.
5. Hanley MJ, Abernethy DR, Greenblatt DJ. Effect of obesity on the pharmacokinetics of drugs in humans. Clin Pharmacokinet. 2010;49(2):71-87
6. Pencina MJ, Navar-Boggan AM, D’Agostino RB Sr, et al. Application of new cholesterol guidelines to a population-based sample. N Engl J Med. 2014;370(15):1422-1431.
7. Prevention of cardiovascular events and death with pravastatin in patients with coronary heart disease and a broad range of initial cholesterol levels. The Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) Study Group. N Engl J Med. 1998;339(19):1349-1357.
8. Pedersen TR, Kjekshus J, Berg K, et al; Scandinavian Simvastatin Survival Study Group. Randomised trial of cholesterol lowering in 4444 patients with coronary heart disease: the Scandinavian Simvastatin Survival Study (4S). 1994. Atheroscler Suppl. 2004;5(3):81-87.
9. Colhoun HM, Betteridge DJ, Durrington PN, et al; CARDS investigators. Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS): multicentre randomised placebo-controlled trial. Lancet. 2004;364(9435):685-696.
10. Collins R, Armitage J, Parish S, Sleigh P, Peto R; Heart Protection Study Collaborative Group. MRC/BHF Heart Protection Study of cholesterol-lowering with simvastatin in 5963 people with diabetes: a randomised placebo-controlled trial. Lancet. 2003;361(9374):2005-2016.
11. Streja L, Packard CJ, Shepherd J, Cobbe S, Ford I; WOSCOPS Group. Factors affecting low-density lipoprotein and high-density lipoprotein cholesterol response to pravastatin in the West Of Scotland Coronary Prevention Study (WOSCOPS). Am J Cardiol. 2002;90(7):731-736.
12. Blasetto JW, Stein EA, Brown WV, Chitra R, Raza A. Efficacy of rosuvastatin compared with other statins at selected starting doses in hypercholesterolemic patients and in special population groups. Am J Cardiol. 2003;91(5A):3C-10C; discussion 10C.
13. Nicholls SJ. Tuzcu EM, Sipahi I, et al. Effect of obesity on lipid-lowering, anti-inflammatory, and antiatherosclerotic benefits of atorvastatin or pravastatin in patients with coronary artery disease (from the REVERSAL Study). Am J Cardiol. 2006;97(11):1553-1557.
14. Stone NJ, Robinson JG, Lichtenstein AH, et al; American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 2013 ACC/AHA Guideline on the treatment of blood cholesterol to reduce atherosclerotic cardiovascular risk on adults: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;63(25, pt B):2889-2934.
15. Jacobson T, Ito M, Maki K, et al. National Lipid Association recommendation for patient-centered management of dyslipidemia: part 1-full report. J Clin Lipidol. 2015;9(2):129-169.
16. Nylén ES, Faselis C, Kheirbek R, Myers J, Panagiotakos D, Kokkinos P. Statins modulate the mortality risk associated with obesity and cardiorespiratory fitness in diabetics. J Clin Endocrinol Metab. 2013;98(8):33940-3401.
More than one-third of Americans and > 20% of veterans have obesity with a body mass index (BMI) ≥ 30 kg/m2.1,2 It is well documented that patients with obesity have altered lipid metabolism, drug distribution, and drug clearance.3-5 As many as 8.2 million Americans may receive statin (3-hydroxymethylglutaryl coenzyme A reductase inhibitors) prescriptions if the American College of Cardiology/American Heart Association 2013 Cholesterol Guidelines are followed; therefore, it is important to examine how the efficacy of these drugs is altered in patients with obesity.6
Multiple studies have examined the benefits of statin therapy through lowering low-density lipoprotein cholesterol (LDL-C); however, few have examined the impact of obesity on statin efficacy. For example, only 18% of subjects in the Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) trial were classified as having obesity, and subjects in the Scandinavian Simvastatin Survival Study (4S) trial had a mean BMI of only 26 kg/m2.7,8 Though statins decreased mortality in both of these studies, it is unknown whether the lipid-lowering effects were the same for participants with and without obesity. The Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS) demonstrated a decrease in major cardiovascular events and all-cause mortality with atorvastatin 10 mg daily therapy in a sample where more than one-third of subjects had obesity.9 However, the mean baseline BMI of subjects in both study groups was only 28 kg/m2, and outcomes for those with and without obesity were not compared.9
Studies that have examined statin efficacy in those with and without obesity include the Heart Protection Study (HPS), a post hoc analysis of the West of Scotland Coronary Prevention Study (WOSCOPS), and a meta-analysis by Blassetto and colleagues. The HPS examined the event rate of vascular events with simvastatin 40 mg daily in patients with diabetes mellitus (DM).10 Though these subgroups were compared in HPS, no statistical difference was demonstrated between these groups for the rate of vascular events among those with and without DM.10 However, the obesity subgroup’s event rate ratios were consistently higher than were those for the nonobese group.10
A post hoc analysis of WOSCOPS examined obesity as a factor for change in LDL-C with pravastatin 40 mg therapy.11 Though the authors found that no significant difference was present between those with and those without obesity, the data supporting this claim were not disclosed, which makes drawing clinical conclusions from this analysis difficult.11 A meta-analysis by Blassetto and colleagues examined the association between rosuvastatin’s efficacy in lowering LDL-C among the subgroups of hypertension, atherosclerosis, type 2 DM, and obesity.12 Though these subgroups were not compared statistically, the obesity subgroup had the lowest mean percent change in lowering LDL-C. Moreover, patients without obesity were not examined as a subgroup.12
With the expected increase in statin therapy and a significant portion of the U.S. population having obesity, it is necessary to determine if obesity alters the efficacy of statins. This study was conducted to determine the effect of obesity on the percent change in LDL-C with statin therapy within a veteran population.
Methods
This study was a retrospective review examining follow-up data from January 1, 2009 to July 1, 2014 from the VA Midsouth Healthcare Network. This network services more than 350,000 patients each year in Tennessee, Kentucky, and West Virgin
Patients were excluded if they had received treatment for hyperlipidemia (niacin, colestyramine, colestipol, colesevelam, other statins, gemfibrozil, fenofibrate, omega-3 ethyl esters, ezetimibe) during the 6 weeks prior to the initial fill date of the statin prescription. Patients whose simvastatin therapy did not span the follow-up period from the time of filling to the follow-up lipid panel were excluded, as were those who had not filled a simvastatin prescription within 30 days of their baseline lipid panel. Also excluded were patients who were newly established at the VA, pregnant, or receiving concomitant antihyperlipidemia agents, dialysis, or interacting medications (tacrolimus, cyclosporine, atazanavir, darunavir, nelfinavir, saquinavir, ritonavir, indinavir, lopinavir, tipranavir, fosamprenavir, fluconazole, voriconazole, itraconazole, voriconazole, posaconazole, amiodarone, or colchicine). Patients with a BMI < 18 kg/m2, hepatic failure as measured by an aspartate transaminase/alanine transaminase (AST/ALT) ratio > 3 times the upper limit of normal, hepatitis, a history of alcoholism, any change in statin dose prior to follow-up cholesterol values, or no follow-up LDL-C values also were excluded.
The baseline data collected included age, sex, weight, height, BMI, hemoglobin A1c, LDL-C, ALT/AST, and serum creatinine (SCr). All other laboratory results were required to be within 270 days of the time the lipid panel was obtained. The index date was set as the date the initial prescription was filled between February 1, 2009 and April 1, 2014. Follow-up levels for LDL-C were obtained 40 to 95 days after the index date. Direct LDL-C values were preferred unless only calculated values were available. Calculated LDL-C values were determined by using the Friedewald equation. An audit of 150 patient charts was conducted to ensure the integrity of data pulled from the database.
The percent changes in LDL-C were calculated for those with and without obesity for both simvastatin 20 mg daily and simvastatin 40 mg daily. The primary outcome was the percent change in LDL-C from baseline. All laboratory values were compared using independent 2-tailed t tests with α set to .05. To have an 80% chance of detecting a 5% difference in percent change in LDL-C between the experimental and control groups, 129 patients were required. To determine whether an association was present, a correlation between BMI and percent change in LDL-C was conducted. All statistics were conducted using SAS software (Cary, North Carolina).
Results
From January 2009 through July 2014, 35,216 patients were initially screened. The majority of patients did not have a baseline LDL-C value and were excluded. A total of 1,183 patients with simvastatin 20 mg daily (BMI < 30 = 661; BMI ≥ 30 = 1,122) and 478 patients with simvastatin 40 mg daily (BMI < 30 = 259; BMI ≥ 30 = 219) met the inclusion criteria.
Baseline characteristics were similar between groups except for a slightly higher age in both groups without obesity (Table). Hepatic and renal serum markers indicated a baseline of adequate organ function for drug clearance for all groups. The mean baseline BMI of those without obesity was about 26 kg/m2, which is considered overweight. Baseline LDL-C values were clinically similar for those with and without obesity, though statistically different (145 mg/dL for the nonobese group and 141 mg/dL for the obese group, P < .05). The percent change in LDL-C was not statistically significant for those with and without obesity for simvastatin 20 mg daily (P = .293) or simvastatin 40 mg daily (P = .2773) (Figure). No correlation was found between the continuous percent change in LDL-C and continuous BMI for either simvastatin dosage (r2 = 0.0016 and 0.0028, respectively).
Discussion
In this retrospective chart review, it was determined that obesity did not affect the percent change in LDL-C from baseline with statin therapy. The HPS found similar results as a secondary endpoint, although that study was underpowered.10 In this study, all groups met power, and there was still no difference between those with and without obesity.
Nicholls and colleagues examined REVERSAL study data to determine whether BMI greater than the median BMI impacted inflammatory markers or lipid levels with atorvastatin 80 mg daily or pravastatin 40 mg daily. The REVERSAL study authors found no difference in percent change LDL-C between those above the median BMI compared with those below the median BMI for patients on pravastatin therapy. However, the authors did find a difference in percent change LDL-C with atorvastatin therapy.13 No difference in percent change LDL-C was present with simvastatin therapy in this study. As simvastatin is more lipophilic than is atorvastatin, lipophilicity remains an area for further study for statin therapy in patients with obesity.
The surrogate marker of percent change in LDL-C was used for the primary outcome in this study. The ACC/AHA 2013 guidelines and the National Lipid Association 2014 guidelines recommend an alternative goal of 30% to 50% change in LDL-C from baseline.14,15 Using this clinically relevant marker compensated for differences in baseline LDL-C and limited the effect of these differences on the primary outcome of this study.
Limitations
This study did not include patients who were underweight (BMI < 18 kg/m2), as these patients have previously demonstrated decreased outcomes with statin therapy.16 However, this limits these data to only those patients that have a BMI of at least 18 kg/m2. Limitations of this study also included the inability to consider adherence and lifestyle changes. These limitations were unavoidable due to the nature of a retrospective chart review.
Conclusion
The prevalence of obesity is increasing, and it is a disease that alters pharmacokinetics and lipid metabolism. Though this study did not find a difference between the LDL-C-lowering efficacy of simvastatin in those with and without obesity, continued study of the effect of obesity on the efficacy of medications is vital.
Acknowledgments
This material is the result of work supported with resources and the use of facilities at the James H. Qullen VAMC in Mountain Home, Tennessee.
More than one-third of Americans and > 20% of veterans have obesity with a body mass index (BMI) ≥ 30 kg/m2.1,2 It is well documented that patients with obesity have altered lipid metabolism, drug distribution, and drug clearance.3-5 As many as 8.2 million Americans may receive statin (3-hydroxymethylglutaryl coenzyme A reductase inhibitors) prescriptions if the American College of Cardiology/American Heart Association 2013 Cholesterol Guidelines are followed; therefore, it is important to examine how the efficacy of these drugs is altered in patients with obesity.6
Multiple studies have examined the benefits of statin therapy through lowering low-density lipoprotein cholesterol (LDL-C); however, few have examined the impact of obesity on statin efficacy. For example, only 18% of subjects in the Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) trial were classified as having obesity, and subjects in the Scandinavian Simvastatin Survival Study (4S) trial had a mean BMI of only 26 kg/m2.7,8 Though statins decreased mortality in both of these studies, it is unknown whether the lipid-lowering effects were the same for participants with and without obesity. The Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS) demonstrated a decrease in major cardiovascular events and all-cause mortality with atorvastatin 10 mg daily therapy in a sample where more than one-third of subjects had obesity.9 However, the mean baseline BMI of subjects in both study groups was only 28 kg/m2, and outcomes for those with and without obesity were not compared.9
Studies that have examined statin efficacy in those with and without obesity include the Heart Protection Study (HPS), a post hoc analysis of the West of Scotland Coronary Prevention Study (WOSCOPS), and a meta-analysis by Blassetto and colleagues. The HPS examined the event rate of vascular events with simvastatin 40 mg daily in patients with diabetes mellitus (DM).10 Though these subgroups were compared in HPS, no statistical difference was demonstrated between these groups for the rate of vascular events among those with and without DM.10 However, the obesity subgroup’s event rate ratios were consistently higher than were those for the nonobese group.10
A post hoc analysis of WOSCOPS examined obesity as a factor for change in LDL-C with pravastatin 40 mg therapy.11 Though the authors found that no significant difference was present between those with and those without obesity, the data supporting this claim were not disclosed, which makes drawing clinical conclusions from this analysis difficult.11 A meta-analysis by Blassetto and colleagues examined the association between rosuvastatin’s efficacy in lowering LDL-C among the subgroups of hypertension, atherosclerosis, type 2 DM, and obesity.12 Though these subgroups were not compared statistically, the obesity subgroup had the lowest mean percent change in lowering LDL-C. Moreover, patients without obesity were not examined as a subgroup.12
With the expected increase in statin therapy and a significant portion of the U.S. population having obesity, it is necessary to determine if obesity alters the efficacy of statins. This study was conducted to determine the effect of obesity on the percent change in LDL-C with statin therapy within a veteran population.
Methods
This study was a retrospective review examining follow-up data from January 1, 2009 to July 1, 2014 from the VA Midsouth Healthcare Network. This network services more than 350,000 patients each year in Tennessee, Kentucky, and West Virgin
Patients were excluded if they had received treatment for hyperlipidemia (niacin, colestyramine, colestipol, colesevelam, other statins, gemfibrozil, fenofibrate, omega-3 ethyl esters, ezetimibe) during the 6 weeks prior to the initial fill date of the statin prescription. Patients whose simvastatin therapy did not span the follow-up period from the time of filling to the follow-up lipid panel were excluded, as were those who had not filled a simvastatin prescription within 30 days of their baseline lipid panel. Also excluded were patients who were newly established at the VA, pregnant, or receiving concomitant antihyperlipidemia agents, dialysis, or interacting medications (tacrolimus, cyclosporine, atazanavir, darunavir, nelfinavir, saquinavir, ritonavir, indinavir, lopinavir, tipranavir, fosamprenavir, fluconazole, voriconazole, itraconazole, voriconazole, posaconazole, amiodarone, or colchicine). Patients with a BMI < 18 kg/m2, hepatic failure as measured by an aspartate transaminase/alanine transaminase (AST/ALT) ratio > 3 times the upper limit of normal, hepatitis, a history of alcoholism, any change in statin dose prior to follow-up cholesterol values, or no follow-up LDL-C values also were excluded.
The baseline data collected included age, sex, weight, height, BMI, hemoglobin A1c, LDL-C, ALT/AST, and serum creatinine (SCr). All other laboratory results were required to be within 270 days of the time the lipid panel was obtained. The index date was set as the date the initial prescription was filled between February 1, 2009 and April 1, 2014. Follow-up levels for LDL-C were obtained 40 to 95 days after the index date. Direct LDL-C values were preferred unless only calculated values were available. Calculated LDL-C values were determined by using the Friedewald equation. An audit of 150 patient charts was conducted to ensure the integrity of data pulled from the database.
The percent changes in LDL-C were calculated for those with and without obesity for both simvastatin 20 mg daily and simvastatin 40 mg daily. The primary outcome was the percent change in LDL-C from baseline. All laboratory values were compared using independent 2-tailed t tests with α set to .05. To have an 80% chance of detecting a 5% difference in percent change in LDL-C between the experimental and control groups, 129 patients were required. To determine whether an association was present, a correlation between BMI and percent change in LDL-C was conducted. All statistics were conducted using SAS software (Cary, North Carolina).
Results
From January 2009 through July 2014, 35,216 patients were initially screened. The majority of patients did not have a baseline LDL-C value and were excluded. A total of 1,183 patients with simvastatin 20 mg daily (BMI < 30 = 661; BMI ≥ 30 = 1,122) and 478 patients with simvastatin 40 mg daily (BMI < 30 = 259; BMI ≥ 30 = 219) met the inclusion criteria.
Baseline characteristics were similar between groups except for a slightly higher age in both groups without obesity (Table). Hepatic and renal serum markers indicated a baseline of adequate organ function for drug clearance for all groups. The mean baseline BMI of those without obesity was about 26 kg/m2, which is considered overweight. Baseline LDL-C values were clinically similar for those with and without obesity, though statistically different (145 mg/dL for the nonobese group and 141 mg/dL for the obese group, P < .05). The percent change in LDL-C was not statistically significant for those with and without obesity for simvastatin 20 mg daily (P = .293) or simvastatin 40 mg daily (P = .2773) (Figure). No correlation was found between the continuous percent change in LDL-C and continuous BMI for either simvastatin dosage (r2 = 0.0016 and 0.0028, respectively).
Discussion
In this retrospective chart review, it was determined that obesity did not affect the percent change in LDL-C from baseline with statin therapy. The HPS found similar results as a secondary endpoint, although that study was underpowered.10 In this study, all groups met power, and there was still no difference between those with and without obesity.
Nicholls and colleagues examined REVERSAL study data to determine whether BMI greater than the median BMI impacted inflammatory markers or lipid levels with atorvastatin 80 mg daily or pravastatin 40 mg daily. The REVERSAL study authors found no difference in percent change LDL-C between those above the median BMI compared with those below the median BMI for patients on pravastatin therapy. However, the authors did find a difference in percent change LDL-C with atorvastatin therapy.13 No difference in percent change LDL-C was present with simvastatin therapy in this study. As simvastatin is more lipophilic than is atorvastatin, lipophilicity remains an area for further study for statin therapy in patients with obesity.
The surrogate marker of percent change in LDL-C was used for the primary outcome in this study. The ACC/AHA 2013 guidelines and the National Lipid Association 2014 guidelines recommend an alternative goal of 30% to 50% change in LDL-C from baseline.14,15 Using this clinically relevant marker compensated for differences in baseline LDL-C and limited the effect of these differences on the primary outcome of this study.
Limitations
This study did not include patients who were underweight (BMI < 18 kg/m2), as these patients have previously demonstrated decreased outcomes with statin therapy.16 However, this limits these data to only those patients that have a BMI of at least 18 kg/m2. Limitations of this study also included the inability to consider adherence and lifestyle changes. These limitations were unavoidable due to the nature of a retrospective chart review.
Conclusion
The prevalence of obesity is increasing, and it is a disease that alters pharmacokinetics and lipid metabolism. Though this study did not find a difference between the LDL-C-lowering efficacy of simvastatin in those with and without obesity, continued study of the effect of obesity on the efficacy of medications is vital.
Acknowledgments
This material is the result of work supported with resources and the use of facilities at the James H. Qullen VAMC in Mountain Home, Tennessee.
1. Ogden CL, Carroll MD, Kit BK, Flegal KM. Prevalence of childhood and adult obesity in the United States, 2011-2012. JAMA. 2014;311(8):806-814.
2. Shen Y, Sambamoorthi U, Rajan M, Miller D, Banerjea R, Pogach L. Obesity and expenditures among elderly Veterans Health Administration users with diabetes. Popul Health Manag. 2009;12(5):255-264.
3. Chan DC, Watts GF, Wang J, Hegele RA, van Bockxmeer FM, Barrett PH. Variation in Niemann-Pick C1-like 1 gene as a determinant of apolipoprotein B-100 kinetics and response to statin therapy in centrally obese men. Clin Endocrinol (Oxf). 2008;69(1):45-51.
4. Cheymol G. Effects of obesity on pharmacokinetics implications for drug therapy. Clin Pharmacokinet. 2000;39(3):215-231.
5. Hanley MJ, Abernethy DR, Greenblatt DJ. Effect of obesity on the pharmacokinetics of drugs in humans. Clin Pharmacokinet. 2010;49(2):71-87
6. Pencina MJ, Navar-Boggan AM, D’Agostino RB Sr, et al. Application of new cholesterol guidelines to a population-based sample. N Engl J Med. 2014;370(15):1422-1431.
7. Prevention of cardiovascular events and death with pravastatin in patients with coronary heart disease and a broad range of initial cholesterol levels. The Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) Study Group. N Engl J Med. 1998;339(19):1349-1357.
8. Pedersen TR, Kjekshus J, Berg K, et al; Scandinavian Simvastatin Survival Study Group. Randomised trial of cholesterol lowering in 4444 patients with coronary heart disease: the Scandinavian Simvastatin Survival Study (4S). 1994. Atheroscler Suppl. 2004;5(3):81-87.
9. Colhoun HM, Betteridge DJ, Durrington PN, et al; CARDS investigators. Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS): multicentre randomised placebo-controlled trial. Lancet. 2004;364(9435):685-696.
10. Collins R, Armitage J, Parish S, Sleigh P, Peto R; Heart Protection Study Collaborative Group. MRC/BHF Heart Protection Study of cholesterol-lowering with simvastatin in 5963 people with diabetes: a randomised placebo-controlled trial. Lancet. 2003;361(9374):2005-2016.
11. Streja L, Packard CJ, Shepherd J, Cobbe S, Ford I; WOSCOPS Group. Factors affecting low-density lipoprotein and high-density lipoprotein cholesterol response to pravastatin in the West Of Scotland Coronary Prevention Study (WOSCOPS). Am J Cardiol. 2002;90(7):731-736.
12. Blasetto JW, Stein EA, Brown WV, Chitra R, Raza A. Efficacy of rosuvastatin compared with other statins at selected starting doses in hypercholesterolemic patients and in special population groups. Am J Cardiol. 2003;91(5A):3C-10C; discussion 10C.
13. Nicholls SJ. Tuzcu EM, Sipahi I, et al. Effect of obesity on lipid-lowering, anti-inflammatory, and antiatherosclerotic benefits of atorvastatin or pravastatin in patients with coronary artery disease (from the REVERSAL Study). Am J Cardiol. 2006;97(11):1553-1557.
14. Stone NJ, Robinson JG, Lichtenstein AH, et al; American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 2013 ACC/AHA Guideline on the treatment of blood cholesterol to reduce atherosclerotic cardiovascular risk on adults: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;63(25, pt B):2889-2934.
15. Jacobson T, Ito M, Maki K, et al. National Lipid Association recommendation for patient-centered management of dyslipidemia: part 1-full report. J Clin Lipidol. 2015;9(2):129-169.
16. Nylén ES, Faselis C, Kheirbek R, Myers J, Panagiotakos D, Kokkinos P. Statins modulate the mortality risk associated with obesity and cardiorespiratory fitness in diabetics. J Clin Endocrinol Metab. 2013;98(8):33940-3401.
1. Ogden CL, Carroll MD, Kit BK, Flegal KM. Prevalence of childhood and adult obesity in the United States, 2011-2012. JAMA. 2014;311(8):806-814.
2. Shen Y, Sambamoorthi U, Rajan M, Miller D, Banerjea R, Pogach L. Obesity and expenditures among elderly Veterans Health Administration users with diabetes. Popul Health Manag. 2009;12(5):255-264.
3. Chan DC, Watts GF, Wang J, Hegele RA, van Bockxmeer FM, Barrett PH. Variation in Niemann-Pick C1-like 1 gene as a determinant of apolipoprotein B-100 kinetics and response to statin therapy in centrally obese men. Clin Endocrinol (Oxf). 2008;69(1):45-51.
4. Cheymol G. Effects of obesity on pharmacokinetics implications for drug therapy. Clin Pharmacokinet. 2000;39(3):215-231.
5. Hanley MJ, Abernethy DR, Greenblatt DJ. Effect of obesity on the pharmacokinetics of drugs in humans. Clin Pharmacokinet. 2010;49(2):71-87
6. Pencina MJ, Navar-Boggan AM, D’Agostino RB Sr, et al. Application of new cholesterol guidelines to a population-based sample. N Engl J Med. 2014;370(15):1422-1431.
7. Prevention of cardiovascular events and death with pravastatin in patients with coronary heart disease and a broad range of initial cholesterol levels. The Long-Term Intervention with Pravastatin in Ischaemic Disease (LIPID) Study Group. N Engl J Med. 1998;339(19):1349-1357.
8. Pedersen TR, Kjekshus J, Berg K, et al; Scandinavian Simvastatin Survival Study Group. Randomised trial of cholesterol lowering in 4444 patients with coronary heart disease: the Scandinavian Simvastatin Survival Study (4S). 1994. Atheroscler Suppl. 2004;5(3):81-87.
9. Colhoun HM, Betteridge DJ, Durrington PN, et al; CARDS investigators. Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS): multicentre randomised placebo-controlled trial. Lancet. 2004;364(9435):685-696.
10. Collins R, Armitage J, Parish S, Sleigh P, Peto R; Heart Protection Study Collaborative Group. MRC/BHF Heart Protection Study of cholesterol-lowering with simvastatin in 5963 people with diabetes: a randomised placebo-controlled trial. Lancet. 2003;361(9374):2005-2016.
11. Streja L, Packard CJ, Shepherd J, Cobbe S, Ford I; WOSCOPS Group. Factors affecting low-density lipoprotein and high-density lipoprotein cholesterol response to pravastatin in the West Of Scotland Coronary Prevention Study (WOSCOPS). Am J Cardiol. 2002;90(7):731-736.
12. Blasetto JW, Stein EA, Brown WV, Chitra R, Raza A. Efficacy of rosuvastatin compared with other statins at selected starting doses in hypercholesterolemic patients and in special population groups. Am J Cardiol. 2003;91(5A):3C-10C; discussion 10C.
13. Nicholls SJ. Tuzcu EM, Sipahi I, et al. Effect of obesity on lipid-lowering, anti-inflammatory, and antiatherosclerotic benefits of atorvastatin or pravastatin in patients with coronary artery disease (from the REVERSAL Study). Am J Cardiol. 2006;97(11):1553-1557.
14. Stone NJ, Robinson JG, Lichtenstein AH, et al; American College of Cardiology/American Heart Association Task Force on Practice Guidelines. 2013 ACC/AHA Guideline on the treatment of blood cholesterol to reduce atherosclerotic cardiovascular risk on adults: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;63(25, pt B):2889-2934.
15. Jacobson T, Ito M, Maki K, et al. National Lipid Association recommendation for patient-centered management of dyslipidemia: part 1-full report. J Clin Lipidol. 2015;9(2):129-169.
16. Nylén ES, Faselis C, Kheirbek R, Myers J, Panagiotakos D, Kokkinos P. Statins modulate the mortality risk associated with obesity and cardiorespiratory fitness in diabetics. J Clin Endocrinol Metab. 2013;98(8):33940-3401.
Controlling the Cost of Oncology Drugs Within the VA: A National Perspective
The VA National Formulary has existed since 1995. Before the development of a single national formulary, each VA facility managed its pharmacy benefit plan through its pharmacy and therapeutics committees. In other words, 173 formulary processes correlating with 173 facilities managed the pharmacy benefit across the entire VA system. This system served > 4 million veterans, providing > 108 million prescriptions per year.
Variations in provision of the pharmacy benefit were commonplace, including veteran access to drug therapy. Formulary processes for a particular drug that were already established in one facility might not have been developed in another facility. This variation among locations oftentimes limited drug availability. The purpose of developing a single National Formulary was twofold: (1) provide a uniform pharmacy benefit to all veterans by reducing variation in access to drugs among the facilities; and (2) obtain leverage in contract pricing for drugs across the entire VA system.
Pharmacy Benefits Management Capabilities
In 1995, VA Under Secretary for Health Kenneth Kizer,MD, established the VA Pharmacy Benefits Management (PBM) Services division. Pharmacy Benefits Management was assigned the tasks of developing a national formulary, creating pharmacologic guidelines, and managing drug costs and utilization. The VA Drug Product and Pharmaceuticals Management Division, based in Hines, Illinois, which already managed and monitored drug usage and purchasing for each VA Medical Center (VAMC) facility, expanded its services by hiring clinical pharmacists. These clinical pharmacists collaborated with field-based physicians to form the VA Medical Advisory Panel (MAP).
The VA Healthcare System is currently divided into 21 geographically defined VISN (Veteran Integrated System Network) regions. Each VISN has a designated VISN Pharmacist Executive (VPE), formerly known as a VISN Formulary Leader. The VPE serves as a pharmacy liaison between the VA health care facilities within the VISN and the national PBM. This collaboration allows open communication and a sharing of ideas and issues regarding drug therapy within the VA system. Collectively, this physician-pharmacist-based group became known as the Veterans Affairs Pharmacy Benefits Management Services division.
The National Acquisition Center (NAC) is another important collaborator with the PBM. Opportunities for pharmaceutical contracting are sought through the NAC. This contracting mechanism offers the VA opportunities for price reductions on bulk purchases, ready access to needed drugs, and a streamlined drug inventory process that reduces inventory management costs. In addition, with pharmaceutical contracting, the VA can provide identical drugs via multiple sources to minimize confusion for the patient. The NAC obtains optimized pricing through various techniques, such as competitive bidding among branded products within drug classes, the Federal Supply Schedule (FSS) program, and performance-based incentive agreements. These techniques allow the VA to maintain stability with regard to average acquisition costs per 30-day-equivalent prescriptions.1,2
National PBM Clinical Program
The primary function of the National PBM Clinical Pharmacy Program Managers (NPBM-CPPMs) is to maintain the National Formulary. In addition, PBM functions to support VA field practitioners with promoting the safe and effective use of all medications, with the ultimate goal of helping veterans achieve optimal therapeutic outcomes.
The Clinical Program includes 12 NPBM-CPPMs. This group is composed of clinical pharmacists with advanced training and education in specialty therapeutic areas who serve as pharmaceutical subject matter experts within their specialty. It is the responsibility of this group to author drug monographs that summarize clinical data about the safety and efficacy of newly approved drugs (new molecular entities). These drug monographs serve as a tool to assist in determining the formulary status of a drug. The documents are evidence based and extensive, providing the necessary information for considerations related to formulary status.
A major role of the NPBM-CPPM group involves clinical document development, which is inclusive of the monograph-style documents used for formulary decision making. These clinical documents can be found stored on the PBM intranet sites, and most are under the Clinical Guidance subhead. Included among these documents are Drug Monographs used for formulary consideration, Criteria for Use (CFU), Abbreviated Reviews, Clinical Recommendations, and Drug Class Reviews. The various documents are designed to serve as resources for field practitioners to help optimize drug therapy for veterans.
The focus of the NPBM-CPPMs is to optimize pharmacotherapy from a population-based perspective. This focus is in contrast to the clinical pharmacy specialists who function at the facility level and focus primarily on patients in their particular geographic region. The NPBMCPPMs need to be familiar with the VA population as a whole. Although recognizing that every patient is different, NPBM-CPPMs develop clinical guidance documents that pertain to as many veterans as possible—typically about 80% of the population. About 20% of veterans may not possess the most common characteristics of an individual with a particular condition. If a common thread can be identified among this minority, then the focus of clinical guidance can expand to help improve the outcomes for this group, as well as educate VA providers.
Oncology NPBM-CPPMs
The field of oncology pharmacy has seen tremendous growth since it was originally recognized as a specialized field of pharmacy practice in 1998. At the same time, the FDA has approved many new drugs designated for oncologic conditions.3 This expansion of drugs has led to an increase in the NPBM-CPPMs oncology workforce, allowing the CPPMs to “divide and conquer” their responsibilities with respect to the oncologic diseases and pharmacotherapeutic agents used to treat these specific conditions.
The FDA approval of an oncology drug means that an NPBM-CPPM needs to first determine the role and value of this drug to the veteran population. Knowing the most common oncologic conditions that afflict veterans helps to understand a drug’s importance to the VA. A number of common cancers among veterans include conditions associated with exposure to Agent Orange or other herbicides during military service and include chronic B-cell leukemias, Hodgkin lymphoma, non-Hodgkin lymphoma, multiple myeloma, and prostate cancer.4 Aside from exposures related to military service, demographic and personal characteristics of the veteran population help determine the malignancies that put veterans at risk (eg, age and smoking history). It is apparent that colorectal cancer and lung cancer are among the most frequent tumor types detected among veterans.
Malignancies that are seen with less frequency in the VA are still important to the NPBM-CPPM. Breast cancer, for example, is a malignancy that afflicts a relatively small proportion of veterans, yet FDA-approved breast cancer drugs are reviewed for formulary consideration under the same national process.
Evidence-Based Determinations
The evidence-based drug monographs prepared for formulary consideration are approached in a consistent manner that takes into account clinical trial data published in peer-reviewed journals. In situations when peer-reviewed evidence is lacking, as in FDA-approval of a drug given Breakthrough Therapy designation, FDA Medical Review transcripts and abstracts from major meetings, such as the American Society of Clinical Oncology (ASCO), may be considered until published evidence is available.
The focus of the monograph is on efficacy and safety of the product and its potential impact on the veteran population. Cost-effective analyses are considered when available, although they are not commonplace at the time
of product launch.5 Authoritative reviews from other national public health providers (eg, National Institute for Health and Care Excellence) are sought to provide a perspective on a drug therapy’s impact on other health care systems.
Criteria for Use documents are tools to help direct therapy to the appropriate veterans, emphasizing the considerations for safe and optimal use. Criteria for Use are not developed for every drug under review. Instead, CFUs are focused on only those drugs that may be considered a high risk for inappropriate use or may raise safety concerns. The documents developed by the NPBM-CPPM, whether they are monographs for formulary consideration or CFUs, undergo peer review by the Medical Advisory Panel (MAP), VISN VPEs, and fieldbased experts that include Field Advisory Committees (FACs) and other field practitioners.
Cost Issues
The stimulus to develop clinical guidance is not solely based on FDA approval of a new molecular entity. Many times, there are drug-related issues, identified by practitioners in the field, that call for resolution. Some of these issues are not exclusive to VA practice but impact VA practitioners just as they would impact non-VA practitioners. It is the role of the PBM to help address those drugrelated issues.
The high cost of oncology drugs is one such issue that impacts clinicians and patients both inside and outside the VA system. The Oncology FAC recognizes the impact of high-cost drugs on the VA system as a whole. They had been tasked with the goal of providing guidance to the field on the use of high-cost oncology drugs. The oncology-focused NPBM-CPPMs has helped the Oncology FAC address this issue. The plan was to develop guidance documents that focus on minimizing the cost to both veterans and VA facilities. The strategy was to first develop
general, broad-based guidance documents that can be used by any site or VISN, especially those sites without oncology-trained pharmacists, to aid in making decisions about high-cost oncology drugs. The second step was to focus on the nuances of select drugs or diseases and provide drug-specific or disease-specific guidance to help manage cost issues within the identified areas.
Under the auspices of the Oncology FAC, the oncology-focused NPBM-CPPMs convened the High Cost Oncology Drug Workgroup to help tackle this concern. The workgroup included oncology-specialized VA physicians and pharmacists who were divided into subgroups to address areas where recognition and subsequent intervention had the greatest potential to reduce facility drug expenditures.
These interventions previously have been identified as best practices within the VA and were thought to be applicable as broad-based guidance to serve as the first step of the cost control strategy. The work of the subgroups resulted in the following guidance documents:
- Dose Rounding in Oncology
- Oral Anticancer Drugs Dispensing and Monitoring
- Oral Anticancer Drugs: Recommended Dispensing and Monitoring
- Chemotherapy Review Committee Process
- Determining Clinical Benefit of High Cost Oncology Drugs
The Oncology FAC approved these guidance documents with subsequent review under the national PBM approval process. They are not mandatory for decision making but are encouraged for use at the facility or VISN level and can be found at the PBM website.
Clinical Pathways
Prostate cancer is one of the common malignancies that afflicts veterans. It is a disease with treatments involving multiple high-cost oncology drugs and as such is an ideal therapeutic area for possible intervention. Prostate cancer provides an opportunity for the second step of this project. As there are multiple therapies available for the treatment of metastatic castrate-resistant prostate cancer (mCRPC) that have been evaluated in the clinical trial setting for similar indications among comparable patient populations and are high cost items, providers find it difficult to choose among them.
A clinical pathway (CP) is a visual care map that provides direction for treatment options.6-8 Brief annotations are provided throughout the map to help provide rationale along with a rating of the clinical evidence that supports that decision. The ultimate goal of the CP is to improve patient outcomes by providing uniformity of care. Uniformity can lead to increased efficiencies, reduced chance of medication errors, and proactive management of expected toxicities. Clinical pathway development is an extensive process.
The oncology-focused NPBM-CPPMs serve as facilitators for the development of the prostate cancer pathway. This involved the creation of a database of pertinent prostate cancer literature, including national consensus guidelines (ie, National Comprehensive Cancer Network, American Urology Association). This database is available for reference and discussion throughout the process. Key VA oncologists with expertise in prostate cancer management were identified to serve as stakeholders and critically review the literature, providing input regarding each step throughout the pathway process.
Similar to previously described documents, the CP for mCRPC (CP-mCRPC) will undergo peer review by the Oncology FAC with subsequent review under the national PBM approval process. The intent of the CPmCRPC is not to mandate decision making regarding treatment but to encourage consistent treatment and ultimately to minimize variance in practice and optimize patient outcomes. Clinical pathways are dependent on the current evidence and, therefore, are documents that require evaluation and regular updates. The CP process for prostate cancer
will serve as a model for the development of subsequent pathways for other diseases.
Prior Authorization
Many commercial insurers use prior authorization (PA) solely for drug coverage decision making. The PBM has recently adopted an expanded variation of the PA process for a few select medications at both the national and VISN level. The VA PBM PA is a thorough review process to ensure that select patients are appropriate for a particular therapy in an attempt to optimize outcomes. In the process, providing drug therapy to those veterans most likely to benefit will minimize the impact of drug cost.
Drugs selected for PA review are those that meet the following characteristics: (1) Drug has demonstrated limited clinical benefit in a select subpopulation of patients; (2) Drug has a high potential for off-label use; and (3) Drug is considered a high-cost item. The potential benefits of this process are not limited just to ensuring that the appropriate patient receives the appropriate therapy. Prior authorization at the national and VISN levels promotes consistent health care delivery throughout the VA.
Similar to the aforementioned CP process, consistency and minimization of variance in practice are desirable to improve veteran outcomes. As more experience is obtained with the PA process, its role within the VA will be reviewed and evaluated.
Conclusion
The task of addressing the high cost of today’s anticancer therapies is not one that can be addressed with a single initiative. The ASCO Cost of Care Task Force has been focusing on various initiatives that promote evidence-based decision making aimed at addressing the cost of cancer care.9 Consistent with this approach, the VA PBM division has been working with key stakeholders at the VISN and local levels to develop interventions aimed at optimizing therapeutic outcomes for the veteran.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
1. Sales MM, Cunningham FE, Glassman PA, Valentino MA, Good CB. Pharmacy benefits management in the Veterans Health Administration: 1995 to 2003. Am J Manag Care. 2005;11(2):104-122.
2. Good CB, Valentino M. Access to affordable medications: The Department of Veterans Affairs pharmacy plan as a national model. Am J Public Health. 2007; 97(12):2129-2131.
3. CenterWatch. FDA approved drugs by therapeutic area. CenterWatch Website. http://www.centerwatch.com/drug-information/fda-approved-drugs/therapeuticarea/ 12/oncology. Accessed November 26, 2014.
4. Department of Veterans Affairs. Veterans’ disease associated with Agent Orange. Department of Veterans Affairs Website. http://www.publichealth.va.gov/exposures/agentorang/conditions/index.asp. Last Updated December 30, 2013. Accessed November 26, 2014.
5. Aspinall SL, Good CB, Glassman PA, Valentino MA. The evolving use of cost-effectiveness analysis in formulary management within the Department of Veterans Affairs. Med Care. 2005;43(suppl 7):20-26.
6. Panella M, Marchisio S, Di Stanislao F. Reducing clinical variations with clinical pathways: Do pathways work? Int J Qual Health Care. 2003;15(6):509-521.
7. Kinsman L, Rotter T, James E, Snow P, Willis J. What is a clinical pathway? Development of a definition to inform the debate. BMC Med. 2010;8:31.
8. Gesme DH, Wiseman M. Strategic use of clinical pathways. J Oncol Pract. 2011;7(1):54-56.
9. Meropol NJ, Schrag D, Smith TJ, et al; American Society of Clinical Oncology. American Society of Clinical Oncology guidance statement: The cost of cancer care. J Clin Oncol. 2009;27(23):3868-3874.
The VA National Formulary has existed since 1995. Before the development of a single national formulary, each VA facility managed its pharmacy benefit plan through its pharmacy and therapeutics committees. In other words, 173 formulary processes correlating with 173 facilities managed the pharmacy benefit across the entire VA system. This system served > 4 million veterans, providing > 108 million prescriptions per year.
Variations in provision of the pharmacy benefit were commonplace, including veteran access to drug therapy. Formulary processes for a particular drug that were already established in one facility might not have been developed in another facility. This variation among locations oftentimes limited drug availability. The purpose of developing a single National Formulary was twofold: (1) provide a uniform pharmacy benefit to all veterans by reducing variation in access to drugs among the facilities; and (2) obtain leverage in contract pricing for drugs across the entire VA system.
Pharmacy Benefits Management Capabilities
In 1995, VA Under Secretary for Health Kenneth Kizer,MD, established the VA Pharmacy Benefits Management (PBM) Services division. Pharmacy Benefits Management was assigned the tasks of developing a national formulary, creating pharmacologic guidelines, and managing drug costs and utilization. The VA Drug Product and Pharmaceuticals Management Division, based in Hines, Illinois, which already managed and monitored drug usage and purchasing for each VA Medical Center (VAMC) facility, expanded its services by hiring clinical pharmacists. These clinical pharmacists collaborated with field-based physicians to form the VA Medical Advisory Panel (MAP).
The VA Healthcare System is currently divided into 21 geographically defined VISN (Veteran Integrated System Network) regions. Each VISN has a designated VISN Pharmacist Executive (VPE), formerly known as a VISN Formulary Leader. The VPE serves as a pharmacy liaison between the VA health care facilities within the VISN and the national PBM. This collaboration allows open communication and a sharing of ideas and issues regarding drug therapy within the VA system. Collectively, this physician-pharmacist-based group became known as the Veterans Affairs Pharmacy Benefits Management Services division.
The National Acquisition Center (NAC) is another important collaborator with the PBM. Opportunities for pharmaceutical contracting are sought through the NAC. This contracting mechanism offers the VA opportunities for price reductions on bulk purchases, ready access to needed drugs, and a streamlined drug inventory process that reduces inventory management costs. In addition, with pharmaceutical contracting, the VA can provide identical drugs via multiple sources to minimize confusion for the patient. The NAC obtains optimized pricing through various techniques, such as competitive bidding among branded products within drug classes, the Federal Supply Schedule (FSS) program, and performance-based incentive agreements. These techniques allow the VA to maintain stability with regard to average acquisition costs per 30-day-equivalent prescriptions.1,2
National PBM Clinical Program
The primary function of the National PBM Clinical Pharmacy Program Managers (NPBM-CPPMs) is to maintain the National Formulary. In addition, PBM functions to support VA field practitioners with promoting the safe and effective use of all medications, with the ultimate goal of helping veterans achieve optimal therapeutic outcomes.
The Clinical Program includes 12 NPBM-CPPMs. This group is composed of clinical pharmacists with advanced training and education in specialty therapeutic areas who serve as pharmaceutical subject matter experts within their specialty. It is the responsibility of this group to author drug monographs that summarize clinical data about the safety and efficacy of newly approved drugs (new molecular entities). These drug monographs serve as a tool to assist in determining the formulary status of a drug. The documents are evidence based and extensive, providing the necessary information for considerations related to formulary status.
A major role of the NPBM-CPPM group involves clinical document development, which is inclusive of the monograph-style documents used for formulary decision making. These clinical documents can be found stored on the PBM intranet sites, and most are under the Clinical Guidance subhead. Included among these documents are Drug Monographs used for formulary consideration, Criteria for Use (CFU), Abbreviated Reviews, Clinical Recommendations, and Drug Class Reviews. The various documents are designed to serve as resources for field practitioners to help optimize drug therapy for veterans.
The focus of the NPBM-CPPMs is to optimize pharmacotherapy from a population-based perspective. This focus is in contrast to the clinical pharmacy specialists who function at the facility level and focus primarily on patients in their particular geographic region. The NPBMCPPMs need to be familiar with the VA population as a whole. Although recognizing that every patient is different, NPBM-CPPMs develop clinical guidance documents that pertain to as many veterans as possible—typically about 80% of the population. About 20% of veterans may not possess the most common characteristics of an individual with a particular condition. If a common thread can be identified among this minority, then the focus of clinical guidance can expand to help improve the outcomes for this group, as well as educate VA providers.
Oncology NPBM-CPPMs
The field of oncology pharmacy has seen tremendous growth since it was originally recognized as a specialized field of pharmacy practice in 1998. At the same time, the FDA has approved many new drugs designated for oncologic conditions.3 This expansion of drugs has led to an increase in the NPBM-CPPMs oncology workforce, allowing the CPPMs to “divide and conquer” their responsibilities with respect to the oncologic diseases and pharmacotherapeutic agents used to treat these specific conditions.
The FDA approval of an oncology drug means that an NPBM-CPPM needs to first determine the role and value of this drug to the veteran population. Knowing the most common oncologic conditions that afflict veterans helps to understand a drug’s importance to the VA. A number of common cancers among veterans include conditions associated with exposure to Agent Orange or other herbicides during military service and include chronic B-cell leukemias, Hodgkin lymphoma, non-Hodgkin lymphoma, multiple myeloma, and prostate cancer.4 Aside from exposures related to military service, demographic and personal characteristics of the veteran population help determine the malignancies that put veterans at risk (eg, age and smoking history). It is apparent that colorectal cancer and lung cancer are among the most frequent tumor types detected among veterans.
Malignancies that are seen with less frequency in the VA are still important to the NPBM-CPPM. Breast cancer, for example, is a malignancy that afflicts a relatively small proportion of veterans, yet FDA-approved breast cancer drugs are reviewed for formulary consideration under the same national process.
Evidence-Based Determinations
The evidence-based drug monographs prepared for formulary consideration are approached in a consistent manner that takes into account clinical trial data published in peer-reviewed journals. In situations when peer-reviewed evidence is lacking, as in FDA-approval of a drug given Breakthrough Therapy designation, FDA Medical Review transcripts and abstracts from major meetings, such as the American Society of Clinical Oncology (ASCO), may be considered until published evidence is available.
The focus of the monograph is on efficacy and safety of the product and its potential impact on the veteran population. Cost-effective analyses are considered when available, although they are not commonplace at the time
of product launch.5 Authoritative reviews from other national public health providers (eg, National Institute for Health and Care Excellence) are sought to provide a perspective on a drug therapy’s impact on other health care systems.
Criteria for Use documents are tools to help direct therapy to the appropriate veterans, emphasizing the considerations for safe and optimal use. Criteria for Use are not developed for every drug under review. Instead, CFUs are focused on only those drugs that may be considered a high risk for inappropriate use or may raise safety concerns. The documents developed by the NPBM-CPPM, whether they are monographs for formulary consideration or CFUs, undergo peer review by the Medical Advisory Panel (MAP), VISN VPEs, and fieldbased experts that include Field Advisory Committees (FACs) and other field practitioners.
Cost Issues
The stimulus to develop clinical guidance is not solely based on FDA approval of a new molecular entity. Many times, there are drug-related issues, identified by practitioners in the field, that call for resolution. Some of these issues are not exclusive to VA practice but impact VA practitioners just as they would impact non-VA practitioners. It is the role of the PBM to help address those drugrelated issues.
The high cost of oncology drugs is one such issue that impacts clinicians and patients both inside and outside the VA system. The Oncology FAC recognizes the impact of high-cost drugs on the VA system as a whole. They had been tasked with the goal of providing guidance to the field on the use of high-cost oncology drugs. The oncology-focused NPBM-CPPMs has helped the Oncology FAC address this issue. The plan was to develop guidance documents that focus on minimizing the cost to both veterans and VA facilities. The strategy was to first develop
general, broad-based guidance documents that can be used by any site or VISN, especially those sites without oncology-trained pharmacists, to aid in making decisions about high-cost oncology drugs. The second step was to focus on the nuances of select drugs or diseases and provide drug-specific or disease-specific guidance to help manage cost issues within the identified areas.
Under the auspices of the Oncology FAC, the oncology-focused NPBM-CPPMs convened the High Cost Oncology Drug Workgroup to help tackle this concern. The workgroup included oncology-specialized VA physicians and pharmacists who were divided into subgroups to address areas where recognition and subsequent intervention had the greatest potential to reduce facility drug expenditures.
These interventions previously have been identified as best practices within the VA and were thought to be applicable as broad-based guidance to serve as the first step of the cost control strategy. The work of the subgroups resulted in the following guidance documents:
- Dose Rounding in Oncology
- Oral Anticancer Drugs Dispensing and Monitoring
- Oral Anticancer Drugs: Recommended Dispensing and Monitoring
- Chemotherapy Review Committee Process
- Determining Clinical Benefit of High Cost Oncology Drugs
The Oncology FAC approved these guidance documents with subsequent review under the national PBM approval process. They are not mandatory for decision making but are encouraged for use at the facility or VISN level and can be found at the PBM website.
Clinical Pathways
Prostate cancer is one of the common malignancies that afflicts veterans. It is a disease with treatments involving multiple high-cost oncology drugs and as such is an ideal therapeutic area for possible intervention. Prostate cancer provides an opportunity for the second step of this project. As there are multiple therapies available for the treatment of metastatic castrate-resistant prostate cancer (mCRPC) that have been evaluated in the clinical trial setting for similar indications among comparable patient populations and are high cost items, providers find it difficult to choose among them.
A clinical pathway (CP) is a visual care map that provides direction for treatment options.6-8 Brief annotations are provided throughout the map to help provide rationale along with a rating of the clinical evidence that supports that decision. The ultimate goal of the CP is to improve patient outcomes by providing uniformity of care. Uniformity can lead to increased efficiencies, reduced chance of medication errors, and proactive management of expected toxicities. Clinical pathway development is an extensive process.
The oncology-focused NPBM-CPPMs serve as facilitators for the development of the prostate cancer pathway. This involved the creation of a database of pertinent prostate cancer literature, including national consensus guidelines (ie, National Comprehensive Cancer Network, American Urology Association). This database is available for reference and discussion throughout the process. Key VA oncologists with expertise in prostate cancer management were identified to serve as stakeholders and critically review the literature, providing input regarding each step throughout the pathway process.
Similar to previously described documents, the CP for mCRPC (CP-mCRPC) will undergo peer review by the Oncology FAC with subsequent review under the national PBM approval process. The intent of the CPmCRPC is not to mandate decision making regarding treatment but to encourage consistent treatment and ultimately to minimize variance in practice and optimize patient outcomes. Clinical pathways are dependent on the current evidence and, therefore, are documents that require evaluation and regular updates. The CP process for prostate cancer
will serve as a model for the development of subsequent pathways for other diseases.
Prior Authorization
Many commercial insurers use prior authorization (PA) solely for drug coverage decision making. The PBM has recently adopted an expanded variation of the PA process for a few select medications at both the national and VISN level. The VA PBM PA is a thorough review process to ensure that select patients are appropriate for a particular therapy in an attempt to optimize outcomes. In the process, providing drug therapy to those veterans most likely to benefit will minimize the impact of drug cost.
Drugs selected for PA review are those that meet the following characteristics: (1) Drug has demonstrated limited clinical benefit in a select subpopulation of patients; (2) Drug has a high potential for off-label use; and (3) Drug is considered a high-cost item. The potential benefits of this process are not limited just to ensuring that the appropriate patient receives the appropriate therapy. Prior authorization at the national and VISN levels promotes consistent health care delivery throughout the VA.
Similar to the aforementioned CP process, consistency and minimization of variance in practice are desirable to improve veteran outcomes. As more experience is obtained with the PA process, its role within the VA will be reviewed and evaluated.
Conclusion
The task of addressing the high cost of today’s anticancer therapies is not one that can be addressed with a single initiative. The ASCO Cost of Care Task Force has been focusing on various initiatives that promote evidence-based decision making aimed at addressing the cost of cancer care.9 Consistent with this approach, the VA PBM division has been working with key stakeholders at the VISN and local levels to develop interventions aimed at optimizing therapeutic outcomes for the veteran.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
The VA National Formulary has existed since 1995. Before the development of a single national formulary, each VA facility managed its pharmacy benefit plan through its pharmacy and therapeutics committees. In other words, 173 formulary processes correlating with 173 facilities managed the pharmacy benefit across the entire VA system. This system served > 4 million veterans, providing > 108 million prescriptions per year.
Variations in provision of the pharmacy benefit were commonplace, including veteran access to drug therapy. Formulary processes for a particular drug that were already established in one facility might not have been developed in another facility. This variation among locations oftentimes limited drug availability. The purpose of developing a single National Formulary was twofold: (1) provide a uniform pharmacy benefit to all veterans by reducing variation in access to drugs among the facilities; and (2) obtain leverage in contract pricing for drugs across the entire VA system.
Pharmacy Benefits Management Capabilities
In 1995, VA Under Secretary for Health Kenneth Kizer,MD, established the VA Pharmacy Benefits Management (PBM) Services division. Pharmacy Benefits Management was assigned the tasks of developing a national formulary, creating pharmacologic guidelines, and managing drug costs and utilization. The VA Drug Product and Pharmaceuticals Management Division, based in Hines, Illinois, which already managed and monitored drug usage and purchasing for each VA Medical Center (VAMC) facility, expanded its services by hiring clinical pharmacists. These clinical pharmacists collaborated with field-based physicians to form the VA Medical Advisory Panel (MAP).
The VA Healthcare System is currently divided into 21 geographically defined VISN (Veteran Integrated System Network) regions. Each VISN has a designated VISN Pharmacist Executive (VPE), formerly known as a VISN Formulary Leader. The VPE serves as a pharmacy liaison between the VA health care facilities within the VISN and the national PBM. This collaboration allows open communication and a sharing of ideas and issues regarding drug therapy within the VA system. Collectively, this physician-pharmacist-based group became known as the Veterans Affairs Pharmacy Benefits Management Services division.
The National Acquisition Center (NAC) is another important collaborator with the PBM. Opportunities for pharmaceutical contracting are sought through the NAC. This contracting mechanism offers the VA opportunities for price reductions on bulk purchases, ready access to needed drugs, and a streamlined drug inventory process that reduces inventory management costs. In addition, with pharmaceutical contracting, the VA can provide identical drugs via multiple sources to minimize confusion for the patient. The NAC obtains optimized pricing through various techniques, such as competitive bidding among branded products within drug classes, the Federal Supply Schedule (FSS) program, and performance-based incentive agreements. These techniques allow the VA to maintain stability with regard to average acquisition costs per 30-day-equivalent prescriptions.1,2
National PBM Clinical Program
The primary function of the National PBM Clinical Pharmacy Program Managers (NPBM-CPPMs) is to maintain the National Formulary. In addition, PBM functions to support VA field practitioners with promoting the safe and effective use of all medications, with the ultimate goal of helping veterans achieve optimal therapeutic outcomes.
The Clinical Program includes 12 NPBM-CPPMs. This group is composed of clinical pharmacists with advanced training and education in specialty therapeutic areas who serve as pharmaceutical subject matter experts within their specialty. It is the responsibility of this group to author drug monographs that summarize clinical data about the safety and efficacy of newly approved drugs (new molecular entities). These drug monographs serve as a tool to assist in determining the formulary status of a drug. The documents are evidence based and extensive, providing the necessary information for considerations related to formulary status.
A major role of the NPBM-CPPM group involves clinical document development, which is inclusive of the monograph-style documents used for formulary decision making. These clinical documents can be found stored on the PBM intranet sites, and most are under the Clinical Guidance subhead. Included among these documents are Drug Monographs used for formulary consideration, Criteria for Use (CFU), Abbreviated Reviews, Clinical Recommendations, and Drug Class Reviews. The various documents are designed to serve as resources for field practitioners to help optimize drug therapy for veterans.
The focus of the NPBM-CPPMs is to optimize pharmacotherapy from a population-based perspective. This focus is in contrast to the clinical pharmacy specialists who function at the facility level and focus primarily on patients in their particular geographic region. The NPBMCPPMs need to be familiar with the VA population as a whole. Although recognizing that every patient is different, NPBM-CPPMs develop clinical guidance documents that pertain to as many veterans as possible—typically about 80% of the population. About 20% of veterans may not possess the most common characteristics of an individual with a particular condition. If a common thread can be identified among this minority, then the focus of clinical guidance can expand to help improve the outcomes for this group, as well as educate VA providers.
Oncology NPBM-CPPMs
The field of oncology pharmacy has seen tremendous growth since it was originally recognized as a specialized field of pharmacy practice in 1998. At the same time, the FDA has approved many new drugs designated for oncologic conditions.3 This expansion of drugs has led to an increase in the NPBM-CPPMs oncology workforce, allowing the CPPMs to “divide and conquer” their responsibilities with respect to the oncologic diseases and pharmacotherapeutic agents used to treat these specific conditions.
The FDA approval of an oncology drug means that an NPBM-CPPM needs to first determine the role and value of this drug to the veteran population. Knowing the most common oncologic conditions that afflict veterans helps to understand a drug’s importance to the VA. A number of common cancers among veterans include conditions associated with exposure to Agent Orange or other herbicides during military service and include chronic B-cell leukemias, Hodgkin lymphoma, non-Hodgkin lymphoma, multiple myeloma, and prostate cancer.4 Aside from exposures related to military service, demographic and personal characteristics of the veteran population help determine the malignancies that put veterans at risk (eg, age and smoking history). It is apparent that colorectal cancer and lung cancer are among the most frequent tumor types detected among veterans.
Malignancies that are seen with less frequency in the VA are still important to the NPBM-CPPM. Breast cancer, for example, is a malignancy that afflicts a relatively small proportion of veterans, yet FDA-approved breast cancer drugs are reviewed for formulary consideration under the same national process.
Evidence-Based Determinations
The evidence-based drug monographs prepared for formulary consideration are approached in a consistent manner that takes into account clinical trial data published in peer-reviewed journals. In situations when peer-reviewed evidence is lacking, as in FDA-approval of a drug given Breakthrough Therapy designation, FDA Medical Review transcripts and abstracts from major meetings, such as the American Society of Clinical Oncology (ASCO), may be considered until published evidence is available.
The focus of the monograph is on efficacy and safety of the product and its potential impact on the veteran population. Cost-effective analyses are considered when available, although they are not commonplace at the time
of product launch.5 Authoritative reviews from other national public health providers (eg, National Institute for Health and Care Excellence) are sought to provide a perspective on a drug therapy’s impact on other health care systems.
Criteria for Use documents are tools to help direct therapy to the appropriate veterans, emphasizing the considerations for safe and optimal use. Criteria for Use are not developed for every drug under review. Instead, CFUs are focused on only those drugs that may be considered a high risk for inappropriate use or may raise safety concerns. The documents developed by the NPBM-CPPM, whether they are monographs for formulary consideration or CFUs, undergo peer review by the Medical Advisory Panel (MAP), VISN VPEs, and fieldbased experts that include Field Advisory Committees (FACs) and other field practitioners.
Cost Issues
The stimulus to develop clinical guidance is not solely based on FDA approval of a new molecular entity. Many times, there are drug-related issues, identified by practitioners in the field, that call for resolution. Some of these issues are not exclusive to VA practice but impact VA practitioners just as they would impact non-VA practitioners. It is the role of the PBM to help address those drugrelated issues.
The high cost of oncology drugs is one such issue that impacts clinicians and patients both inside and outside the VA system. The Oncology FAC recognizes the impact of high-cost drugs on the VA system as a whole. They had been tasked with the goal of providing guidance to the field on the use of high-cost oncology drugs. The oncology-focused NPBM-CPPMs has helped the Oncology FAC address this issue. The plan was to develop guidance documents that focus on minimizing the cost to both veterans and VA facilities. The strategy was to first develop
general, broad-based guidance documents that can be used by any site or VISN, especially those sites without oncology-trained pharmacists, to aid in making decisions about high-cost oncology drugs. The second step was to focus on the nuances of select drugs or diseases and provide drug-specific or disease-specific guidance to help manage cost issues within the identified areas.
Under the auspices of the Oncology FAC, the oncology-focused NPBM-CPPMs convened the High Cost Oncology Drug Workgroup to help tackle this concern. The workgroup included oncology-specialized VA physicians and pharmacists who were divided into subgroups to address areas where recognition and subsequent intervention had the greatest potential to reduce facility drug expenditures.
These interventions previously have been identified as best practices within the VA and were thought to be applicable as broad-based guidance to serve as the first step of the cost control strategy. The work of the subgroups resulted in the following guidance documents:
- Dose Rounding in Oncology
- Oral Anticancer Drugs Dispensing and Monitoring
- Oral Anticancer Drugs: Recommended Dispensing and Monitoring
- Chemotherapy Review Committee Process
- Determining Clinical Benefit of High Cost Oncology Drugs
The Oncology FAC approved these guidance documents with subsequent review under the national PBM approval process. They are not mandatory for decision making but are encouraged for use at the facility or VISN level and can be found at the PBM website.
Clinical Pathways
Prostate cancer is one of the common malignancies that afflicts veterans. It is a disease with treatments involving multiple high-cost oncology drugs and as such is an ideal therapeutic area for possible intervention. Prostate cancer provides an opportunity for the second step of this project. As there are multiple therapies available for the treatment of metastatic castrate-resistant prostate cancer (mCRPC) that have been evaluated in the clinical trial setting for similar indications among comparable patient populations and are high cost items, providers find it difficult to choose among them.
A clinical pathway (CP) is a visual care map that provides direction for treatment options.6-8 Brief annotations are provided throughout the map to help provide rationale along with a rating of the clinical evidence that supports that decision. The ultimate goal of the CP is to improve patient outcomes by providing uniformity of care. Uniformity can lead to increased efficiencies, reduced chance of medication errors, and proactive management of expected toxicities. Clinical pathway development is an extensive process.
The oncology-focused NPBM-CPPMs serve as facilitators for the development of the prostate cancer pathway. This involved the creation of a database of pertinent prostate cancer literature, including national consensus guidelines (ie, National Comprehensive Cancer Network, American Urology Association). This database is available for reference and discussion throughout the process. Key VA oncologists with expertise in prostate cancer management were identified to serve as stakeholders and critically review the literature, providing input regarding each step throughout the pathway process.
Similar to previously described documents, the CP for mCRPC (CP-mCRPC) will undergo peer review by the Oncology FAC with subsequent review under the national PBM approval process. The intent of the CPmCRPC is not to mandate decision making regarding treatment but to encourage consistent treatment and ultimately to minimize variance in practice and optimize patient outcomes. Clinical pathways are dependent on the current evidence and, therefore, are documents that require evaluation and regular updates. The CP process for prostate cancer
will serve as a model for the development of subsequent pathways for other diseases.
Prior Authorization
Many commercial insurers use prior authorization (PA) solely for drug coverage decision making. The PBM has recently adopted an expanded variation of the PA process for a few select medications at both the national and VISN level. The VA PBM PA is a thorough review process to ensure that select patients are appropriate for a particular therapy in an attempt to optimize outcomes. In the process, providing drug therapy to those veterans most likely to benefit will minimize the impact of drug cost.
Drugs selected for PA review are those that meet the following characteristics: (1) Drug has demonstrated limited clinical benefit in a select subpopulation of patients; (2) Drug has a high potential for off-label use; and (3) Drug is considered a high-cost item. The potential benefits of this process are not limited just to ensuring that the appropriate patient receives the appropriate therapy. Prior authorization at the national and VISN levels promotes consistent health care delivery throughout the VA.
Similar to the aforementioned CP process, consistency and minimization of variance in practice are desirable to improve veteran outcomes. As more experience is obtained with the PA process, its role within the VA will be reviewed and evaluated.
Conclusion
The task of addressing the high cost of today’s anticancer therapies is not one that can be addressed with a single initiative. The ASCO Cost of Care Task Force has been focusing on various initiatives that promote evidence-based decision making aimed at addressing the cost of cancer care.9 Consistent with this approach, the VA PBM division has been working with key stakeholders at the VISN and local levels to develop interventions aimed at optimizing therapeutic outcomes for the veteran.
Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.
Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, Frontline Medical Communications Inc., the U.S. Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects—before administering pharmacologic therapy to patients.
1. Sales MM, Cunningham FE, Glassman PA, Valentino MA, Good CB. Pharmacy benefits management in the Veterans Health Administration: 1995 to 2003. Am J Manag Care. 2005;11(2):104-122.
2. Good CB, Valentino M. Access to affordable medications: The Department of Veterans Affairs pharmacy plan as a national model. Am J Public Health. 2007; 97(12):2129-2131.
3. CenterWatch. FDA approved drugs by therapeutic area. CenterWatch Website. http://www.centerwatch.com/drug-information/fda-approved-drugs/therapeuticarea/ 12/oncology. Accessed November 26, 2014.
4. Department of Veterans Affairs. Veterans’ disease associated with Agent Orange. Department of Veterans Affairs Website. http://www.publichealth.va.gov/exposures/agentorang/conditions/index.asp. Last Updated December 30, 2013. Accessed November 26, 2014.
5. Aspinall SL, Good CB, Glassman PA, Valentino MA. The evolving use of cost-effectiveness analysis in formulary management within the Department of Veterans Affairs. Med Care. 2005;43(suppl 7):20-26.
6. Panella M, Marchisio S, Di Stanislao F. Reducing clinical variations with clinical pathways: Do pathways work? Int J Qual Health Care. 2003;15(6):509-521.
7. Kinsman L, Rotter T, James E, Snow P, Willis J. What is a clinical pathway? Development of a definition to inform the debate. BMC Med. 2010;8:31.
8. Gesme DH, Wiseman M. Strategic use of clinical pathways. J Oncol Pract. 2011;7(1):54-56.
9. Meropol NJ, Schrag D, Smith TJ, et al; American Society of Clinical Oncology. American Society of Clinical Oncology guidance statement: The cost of cancer care. J Clin Oncol. 2009;27(23):3868-3874.
1. Sales MM, Cunningham FE, Glassman PA, Valentino MA, Good CB. Pharmacy benefits management in the Veterans Health Administration: 1995 to 2003. Am J Manag Care. 2005;11(2):104-122.
2. Good CB, Valentino M. Access to affordable medications: The Department of Veterans Affairs pharmacy plan as a national model. Am J Public Health. 2007; 97(12):2129-2131.
3. CenterWatch. FDA approved drugs by therapeutic area. CenterWatch Website. http://www.centerwatch.com/drug-information/fda-approved-drugs/therapeuticarea/ 12/oncology. Accessed November 26, 2014.
4. Department of Veterans Affairs. Veterans’ disease associated with Agent Orange. Department of Veterans Affairs Website. http://www.publichealth.va.gov/exposures/agentorang/conditions/index.asp. Last Updated December 30, 2013. Accessed November 26, 2014.
5. Aspinall SL, Good CB, Glassman PA, Valentino MA. The evolving use of cost-effectiveness analysis in formulary management within the Department of Veterans Affairs. Med Care. 2005;43(suppl 7):20-26.
6. Panella M, Marchisio S, Di Stanislao F. Reducing clinical variations with clinical pathways: Do pathways work? Int J Qual Health Care. 2003;15(6):509-521.
7. Kinsman L, Rotter T, James E, Snow P, Willis J. What is a clinical pathway? Development of a definition to inform the debate. BMC Med. 2010;8:31.
8. Gesme DH, Wiseman M. Strategic use of clinical pathways. J Oncol Pract. 2011;7(1):54-56.
9. Meropol NJ, Schrag D, Smith TJ, et al; American Society of Clinical Oncology. American Society of Clinical Oncology guidance statement: The cost of cancer care. J Clin Oncol. 2009;27(23):3868-3874.
Medication Adherence and Operating Room Efficiency for a Surgical Subspecialty
Inefficiencies in the operating room (OR) can occur before, during, and between cases and lead to multiple problems, including delays in the delivery of patient care. They also have a negative financial impact for the institution and cause frustration for surgeons, anesthesiologists, and other OR staff. Ultimately, delays lead to dissatisfaction among patients and health care providers. Operating room efficiency increasingly is becoming a marker of the quality of surgical care.
The Institute of Medicine (IOM) identified timeliness and efficiency as 2 of 6 areas for improvement for U.S. hospitals.1 Organizations such as the Centers for Medicare and Medicaid Services, Agency for Healthcare Research and Quality, IOM, Institute for Healthcare Improvement, The Joint Commission, Leapfrog Group, and National Quality Forum are beginning to monitor patient care workflow in order to improve quality while reducing costs.2
About 187 million Americans take at least 1 prescription drug.3 An estimated 20% to 50% of patients do not take their medications as prescribed and are said to be nonadherent with therapy.4,5 Nonadherence to medication also has been shown to result in increased health risks and costs of up to $290 billion.6 Patients who receive pharmacist services achieve better clinical outcomes for chronic diseases than national standards.7
Among patients with a chronic disease, poor adherence tends to result in poor outcomes and increased medical costs. Yet these are the patients who face the most risks in surgery and require the most preoperative care. Several studies have evaluated the frequency of medication nonadherence prior to surgery and its effect on surgery cancellations. These studies have examined a variety of factors related to patient preoperative education, medications, food intake, bowel prep, etc.
In a VA Puget Sound Health Care System study, 23% of patients undergoing ambulatory surgery were nonadherent to preoperative medication instructions.8 Studies have found that up to 7% of cancellations were impacted by medication nonadherence and preoperative education.9-13 Furthermore, studies using large-scale databases have found medically treatable conditions as a significant source of surgical delay.14 Had these conditions been treated a priori, delay in surgery would not have occurred. Unfortunately, it is not clear whether the delays were the result of missed preoperative checks or medication nonadherence.
Ensuring patient safety, including reducing medical errors and adverse events (AEs), is imperative in the surgical workflow. In 1999, the IOM estimated that medical error was a leading cause of death in the U.S. and resulted in up to 100,000 deaths annually.15
In a retrospective study of 15,000 cases, Gawande and colleagues found that 66% of all AEs were surgical and 54% of these were preventable.16 In addition to improving reporting systems, creating a culture of safety with all members of the health care team and building a partnership with patients during preoperative visits can ensure increased adherence and reduced medication AEs. In a neurosurgical cohort of patients, Bernstein and colleagues found that 85% of patients were subjected to at least 1 error; 10% of the errors were major, and 65% were deemed preventable.17
The purpose of this study is to evaluate whether redundancy built into the patient care protocols prior to surgery helps catch errors as demonstrated in time-out analyses.18 Decreasing these errors would lead to fewer surgical cancellations and medical workup delays. The authors hypothesize that a structured preoperative pharmacologic workup would result in decreased preoperative delay in the surgical workflow.
Methods
The study protocol was reviewed and determined to be a quality improvement/quality assurance initiative, which exempted it from institutional review board or other oversight committee review, at the Minneapolis VA Health Care System. The VA OR Efficiency Task Force identified medication adherence as a possible source of delay. A study therefore was undertaken to determine the adherence rate and how it impacted operative delays. Data were extracted from this study to test the stated hypothesis and compare with historic data.
Fifty consecutive patients undergoing neurosurgical procedures from May 2010 through July 2010 were retrospectively reviewed and evaluated. All patients had a preoperative consultation with a pharmacist and the neurosurgery coordinator who reviewed all medications with the patient and gave specific instructions on which medications should be continued or discontinued prior to the surgery date. This information was documented on the OR Medication Compliance Worksheet and included in the patient’s preoperative chart by the neurosurgery coordinator. On the day of surgery, all active medications on this chart were reviewed with the patient by the anesthesiologist and documented on the OR Medication Compliance Worksheet. The worksheet was then sent to the neurosurgery coordinator for secondary review and analysis.
To evaluate delays, the authors reviewed the patient anesthesiology records. Delays were defined as either cancellations of the case due to medication nonadherence, which would make it unsafe to proceed with surgery, or minor delays due to medication nonadherence, which required further preoperative assessment and workup before proceeding with surgery. Cancelled cases were defined as cases on the final copy of the published OR schedule that did not occur.
Medication Adherence Program
In order to ensure medication adherence prior to surgery there were 5 points of contact with a patient from the time the patient was scheduled for surgery and the date of the surgery (Figure 1):
- The coordinator reviewed medications with patient at time of scheduling
- A letter was sent with specific instructions about medications
- Preoperative medicine clearance
- Preoperative neurosurgery appointment
- Call from pharmacist 1 week before surgery
Results
The authors reviewed 10 months of the neurosurgical service prior to initiation of the protocol. Of 317 analyzed cases, 30 were delayed/cancelled. Among these, 5 cases with the possibility of a 6th were cancelled due to medication issues. Following the initialization of the study, 50 patients underwent preoperative counseling with the pharmacist and the neurosurgery coordinator and had an OR Medication Compliance Worksheet created.
Review of the OR Medication Compliance Worksheet demonstrated that 2 patients were nonadherent with their medications.
Discussion
The OR is one of the most expensive areas in an acute care hospital.2 Cancellations or delays can have significant negative financial implications (about $1,500 per hour of lost revenue).19 In order to improve OR efficiency and reduce preoperative delays, the causes of preoperative delays must be determined.
Some delays and cancellations result from either preoperative or perioperative issues. Prolonged wait time and postponement may cause preoperative delays. Perioperative delays include delays in getting into the OR once the patient has arrived in the hospital as well as delays during the operation. These delays can be due to both human error and system deficiencies.20
One Toronto, Canada study looked at the different etiologies for delays in cranial and spinal procedures and found that equipment failure followed by physical transit into the OR were the top reasons for delays.21 These researchers also found that first cases each day sometimes had a higher incidence of delays than did subsequent cases because several ORs prepare to start simultaneously, which causes an increased demand on hospital support services (eg, registration desk, imaging department, nurses in the patient holding area, or transportation). The number of these support staff remains constant throughout the day, whereas the first-case patients all arrive at about the same time, causing a bottleneck in the early morning. The authors looked at 1 facet of the delay problem as an ongoing analysis for hospital efficiency improvement.
With the implementation of a simple 5-step process, medication adherence was > 90% and the impact of nonadherence on surgical procedure delays was eliminated during the trial period. In this sample, nonadherence did not impact surgery, which resulted in fewer delays and cancellations. The process emphasized repetition and communication, involving 5 reminders between the date of OR scheduling and the date of the actual surgery. The authors found that in this quality improvement study, redundancy in the workflow actually improved the efficiency of the patient’s hospital course.
Within the OR, there are many perspectives to consider for improving OR efficiency. For instance, Archer and colleagues present several distinct perspectives: that of the health care institution, the individual practitioner, the patient, and evidenced-based medicine.2 According to Strum and colleagues, OR inefficiency is the sum of under- and overutilized time and efficiency is highest when OR inefficiency is minimized.22 An OR is considered underutilized when it is staffed at regular wages but not used for surgery, setup, or cleanup. An OR is considered overutilized when the OR staff receives overtime wages, multiplied by the relative cost of overtime compared with straight time. Delayed or cancelled surgeries can result in idle operating room staff, while repeat or correlative studies (ie, electrocardiogram, drug levels) may overutilize support services.
Limitations
This study has obvious limitations due to its small scale. Because the protocol implementation resulted in few delays, a very large cohort would have been necessary to attain statistical power.
Conclusion
By improving OR efficiency and reducing preoperative delays, surgical capacity can be increased.
In this study, the authors demonstrate that with little addition of cost, medication nonadherence can be reduced or eliminated as an issue for surgical delays. With the implementation of the 5-step reminder process as well as the addition of a pharmacist consultation/visit, medication adherence was > 90% among preoperative patients in this small study. With the number of patients with complex medication regimens, increasing medication adherence in the preoperative period is not only important in reducing operative delays, but also an opportunity to ensure the patient is safe and optimally treated. ˜
1. Institute of Medicine (US) Committee on Quality of Health Care in America. Crossing the Quality Chasm: A New Health System for the 21st Century. Washing ton, DC: National Academy Press; 2001. https://www.nap.edu/catalog/10027/crossing-the-quality -chasm-a-new-health-system-for-the.
2. Archer T, Macario A. The drive for operating room efficiency will increase quality of patient care. Curr Opin Anaesthesiol. 2006;19(2):171-176.
3. Lundy J; Kaiser Family Foundation. Prescription drug trends. https://kaiserfamilyfoundation.files .wordpress.com/2013/01/3057-08.pdf. Published May 2010. Accessed January 26, 2017.
4. Osterberg L, Blaschke T. Adherence to medication. N Engl J Med. 2005;353(5):487-497.
5. DiMatteo MR. Variations in patients’ adherence to medical recommendations: a quantitative review of 50 years of research. Med Care. 2004;42(3):200-209.
6. National Priorities Partnership, NEHI. Improving patient medication adherence: a $100+ billion opportunity. http://adhereforhealth.org/wp-content/uploads/pdf/ImprovingPatientMedicationAdherence-NPP_Patient_Medication_Adherence_NQF.pdf. Published April 2011. Accessed January 26, 2017.
7. Kripalani S, Yao X, Haynes RB. Interventions to enhance medication adherence in chronic medical conditions: a systematic review. Arch Intern Med. 2007;167(6):540-550.
8. Chew JD, Bradley KA, Flum DR, Cornia PB, Koepsell TD. The impact of low health literacy on surgical practice. Am J Surg. 2004;188(3):250-253.
9. van Klei WA, Moons KG, Rutten CL, et al. The effect of outpatient preoperative evaluation of hospital inpatients on cancellation of surgery and length of hospital stay. Anesth Analg. 2002;94(3):644-649.
10. Sanjay P, Dodds A, Miller E, Arumugam PJ, Woodward A. Cancelled elective operations: an observational study from a district general hospital. J Health Organ Manag. 2007;21(1):54-58.
11. Schofield WN, Rubin GL, Piza M, et al. Cancellation of operations on the day of intended surgery at a major Australian referral hospital. Med J Aust. 2005;182(12):612-615.
12. Zafar A, Mufti TS, Griffin S, Ahmed S, Ansari JA. Cancelled elective general surgical operations in Ayub Teaching Hospital. J Ayub Med Coll Abbottabad. 2007;19(3):64-66.
13. Knox M, Myers E, Hurley M. The impact of pre-operative assessment clinics on elective surgical case cancellations. Surgeon. 2009;7(2):76-78.
14. Phruetthiphat OA, Gao Y, Anthony CA, Pugely AJ, Warth LC, Callaghan JJ. Incidence of and preoperative risk factors for surgical delay in primary total hip arthroplasty: analysis from the American College of Surgeons National Surgical Quality Improvement Program. J Arthroplasty. 2016;31(11): 2432-2436.
15. Kohn LT, Corrigan JM, Donaldson MD, eds; Institute of Medicine; Committee on Quality of Health Care in America. To Err Is Human: Building a Safer Health System. Washington, DC: National Academies; 2000. https://www.nap.edu/catalog/9728/to-err-is-human-building-a-safer-health-system.
16. Gawande AA, Thomas EJ, Zinner MJ, Brennan TA. The incidence and nature of surgical adverse events in Colorado and Utah in 1992. Surgery. 1999;126(1):66-75.
17. Bernstein M, Massicotte E, Etchells E. Error in neurosurgery: a prospective pilot study. Can J Neurol Sci. 2001;28(suppl 2):S60.
18. Altpeter T, Luckhardt K, Lewis JN, Harken AH, Polk HC Jr. Expanded surgical time out: a key to real-time data collection and quality improvement. J Am Coll Surg. 2007;204(4):527-532.
19. Dexter F, Marcon E, Epstein RH, Ledolter J. Validation of statistical methods to compare cancellation rates on the day of surgery. Anesth Analg. 2005;101(2):465-473.
20. Etchells E, O’Neill C, Bernstein M. Patient safety in surgery: error detection and prevention. World J Surg. 2003;27(8):936-941.
21. Wong J, Khu KJ, Kaderali Z, Bernstein M. Delays in the operating room: signs of an imperfect system. Can J Surg. 2010;53(3):189-195.
22. Strum DP, Vargas LG, May JH. Surgical subspecialty block utilization and capacity planning: a minimal cost analysis model. Anesthesiology. 1999;90(4):1176-1185.
Inefficiencies in the operating room (OR) can occur before, during, and between cases and lead to multiple problems, including delays in the delivery of patient care. They also have a negative financial impact for the institution and cause frustration for surgeons, anesthesiologists, and other OR staff. Ultimately, delays lead to dissatisfaction among patients and health care providers. Operating room efficiency increasingly is becoming a marker of the quality of surgical care.
The Institute of Medicine (IOM) identified timeliness and efficiency as 2 of 6 areas for improvement for U.S. hospitals.1 Organizations such as the Centers for Medicare and Medicaid Services, Agency for Healthcare Research and Quality, IOM, Institute for Healthcare Improvement, The Joint Commission, Leapfrog Group, and National Quality Forum are beginning to monitor patient care workflow in order to improve quality while reducing costs.2
About 187 million Americans take at least 1 prescription drug.3 An estimated 20% to 50% of patients do not take their medications as prescribed and are said to be nonadherent with therapy.4,5 Nonadherence to medication also has been shown to result in increased health risks and costs of up to $290 billion.6 Patients who receive pharmacist services achieve better clinical outcomes for chronic diseases than national standards.7
Among patients with a chronic disease, poor adherence tends to result in poor outcomes and increased medical costs. Yet these are the patients who face the most risks in surgery and require the most preoperative care. Several studies have evaluated the frequency of medication nonadherence prior to surgery and its effect on surgery cancellations. These studies have examined a variety of factors related to patient preoperative education, medications, food intake, bowel prep, etc.
In a VA Puget Sound Health Care System study, 23% of patients undergoing ambulatory surgery were nonadherent to preoperative medication instructions.8 Studies have found that up to 7% of cancellations were impacted by medication nonadherence and preoperative education.9-13 Furthermore, studies using large-scale databases have found medically treatable conditions as a significant source of surgical delay.14 Had these conditions been treated a priori, delay in surgery would not have occurred. Unfortunately, it is not clear whether the delays were the result of missed preoperative checks or medication nonadherence.
Ensuring patient safety, including reducing medical errors and adverse events (AEs), is imperative in the surgical workflow. In 1999, the IOM estimated that medical error was a leading cause of death in the U.S. and resulted in up to 100,000 deaths annually.15
In a retrospective study of 15,000 cases, Gawande and colleagues found that 66% of all AEs were surgical and 54% of these were preventable.16 In addition to improving reporting systems, creating a culture of safety with all members of the health care team and building a partnership with patients during preoperative visits can ensure increased adherence and reduced medication AEs. In a neurosurgical cohort of patients, Bernstein and colleagues found that 85% of patients were subjected to at least 1 error; 10% of the errors were major, and 65% were deemed preventable.17
The purpose of this study is to evaluate whether redundancy built into the patient care protocols prior to surgery helps catch errors as demonstrated in time-out analyses.18 Decreasing these errors would lead to fewer surgical cancellations and medical workup delays. The authors hypothesize that a structured preoperative pharmacologic workup would result in decreased preoperative delay in the surgical workflow.
Methods
The study protocol was reviewed and determined to be a quality improvement/quality assurance initiative, which exempted it from institutional review board or other oversight committee review, at the Minneapolis VA Health Care System. The VA OR Efficiency Task Force identified medication adherence as a possible source of delay. A study therefore was undertaken to determine the adherence rate and how it impacted operative delays. Data were extracted from this study to test the stated hypothesis and compare with historic data.
Fifty consecutive patients undergoing neurosurgical procedures from May 2010 through July 2010 were retrospectively reviewed and evaluated. All patients had a preoperative consultation with a pharmacist and the neurosurgery coordinator who reviewed all medications with the patient and gave specific instructions on which medications should be continued or discontinued prior to the surgery date. This information was documented on the OR Medication Compliance Worksheet and included in the patient’s preoperative chart by the neurosurgery coordinator. On the day of surgery, all active medications on this chart were reviewed with the patient by the anesthesiologist and documented on the OR Medication Compliance Worksheet. The worksheet was then sent to the neurosurgery coordinator for secondary review and analysis.
To evaluate delays, the authors reviewed the patient anesthesiology records. Delays were defined as either cancellations of the case due to medication nonadherence, which would make it unsafe to proceed with surgery, or minor delays due to medication nonadherence, which required further preoperative assessment and workup before proceeding with surgery. Cancelled cases were defined as cases on the final copy of the published OR schedule that did not occur.
Medication Adherence Program
In order to ensure medication adherence prior to surgery there were 5 points of contact with a patient from the time the patient was scheduled for surgery and the date of the surgery (Figure 1):
- The coordinator reviewed medications with patient at time of scheduling
- A letter was sent with specific instructions about medications
- Preoperative medicine clearance
- Preoperative neurosurgery appointment
- Call from pharmacist 1 week before surgery
Results
The authors reviewed 10 months of the neurosurgical service prior to initiation of the protocol. Of 317 analyzed cases, 30 were delayed/cancelled. Among these, 5 cases with the possibility of a 6th were cancelled due to medication issues. Following the initialization of the study, 50 patients underwent preoperative counseling with the pharmacist and the neurosurgery coordinator and had an OR Medication Compliance Worksheet created.
Review of the OR Medication Compliance Worksheet demonstrated that 2 patients were nonadherent with their medications.
Discussion
The OR is one of the most expensive areas in an acute care hospital.2 Cancellations or delays can have significant negative financial implications (about $1,500 per hour of lost revenue).19 In order to improve OR efficiency and reduce preoperative delays, the causes of preoperative delays must be determined.
Some delays and cancellations result from either preoperative or perioperative issues. Prolonged wait time and postponement may cause preoperative delays. Perioperative delays include delays in getting into the OR once the patient has arrived in the hospital as well as delays during the operation. These delays can be due to both human error and system deficiencies.20
One Toronto, Canada study looked at the different etiologies for delays in cranial and spinal procedures and found that equipment failure followed by physical transit into the OR were the top reasons for delays.21 These researchers also found that first cases each day sometimes had a higher incidence of delays than did subsequent cases because several ORs prepare to start simultaneously, which causes an increased demand on hospital support services (eg, registration desk, imaging department, nurses in the patient holding area, or transportation). The number of these support staff remains constant throughout the day, whereas the first-case patients all arrive at about the same time, causing a bottleneck in the early morning. The authors looked at 1 facet of the delay problem as an ongoing analysis for hospital efficiency improvement.
With the implementation of a simple 5-step process, medication adherence was > 90% and the impact of nonadherence on surgical procedure delays was eliminated during the trial period. In this sample, nonadherence did not impact surgery, which resulted in fewer delays and cancellations. The process emphasized repetition and communication, involving 5 reminders between the date of OR scheduling and the date of the actual surgery. The authors found that in this quality improvement study, redundancy in the workflow actually improved the efficiency of the patient’s hospital course.
Within the OR, there are many perspectives to consider for improving OR efficiency. For instance, Archer and colleagues present several distinct perspectives: that of the health care institution, the individual practitioner, the patient, and evidenced-based medicine.2 According to Strum and colleagues, OR inefficiency is the sum of under- and overutilized time and efficiency is highest when OR inefficiency is minimized.22 An OR is considered underutilized when it is staffed at regular wages but not used for surgery, setup, or cleanup. An OR is considered overutilized when the OR staff receives overtime wages, multiplied by the relative cost of overtime compared with straight time. Delayed or cancelled surgeries can result in idle operating room staff, while repeat or correlative studies (ie, electrocardiogram, drug levels) may overutilize support services.
Limitations
This study has obvious limitations due to its small scale. Because the protocol implementation resulted in few delays, a very large cohort would have been necessary to attain statistical power.
Conclusion
By improving OR efficiency and reducing preoperative delays, surgical capacity can be increased.
In this study, the authors demonstrate that with little addition of cost, medication nonadherence can be reduced or eliminated as an issue for surgical delays. With the implementation of the 5-step reminder process as well as the addition of a pharmacist consultation/visit, medication adherence was > 90% among preoperative patients in this small study. With the number of patients with complex medication regimens, increasing medication adherence in the preoperative period is not only important in reducing operative delays, but also an opportunity to ensure the patient is safe and optimally treated. ˜
Inefficiencies in the operating room (OR) can occur before, during, and between cases and lead to multiple problems, including delays in the delivery of patient care. They also have a negative financial impact for the institution and cause frustration for surgeons, anesthesiologists, and other OR staff. Ultimately, delays lead to dissatisfaction among patients and health care providers. Operating room efficiency increasingly is becoming a marker of the quality of surgical care.
The Institute of Medicine (IOM) identified timeliness and efficiency as 2 of 6 areas for improvement for U.S. hospitals.1 Organizations such as the Centers for Medicare and Medicaid Services, Agency for Healthcare Research and Quality, IOM, Institute for Healthcare Improvement, The Joint Commission, Leapfrog Group, and National Quality Forum are beginning to monitor patient care workflow in order to improve quality while reducing costs.2
About 187 million Americans take at least 1 prescription drug.3 An estimated 20% to 50% of patients do not take their medications as prescribed and are said to be nonadherent with therapy.4,5 Nonadherence to medication also has been shown to result in increased health risks and costs of up to $290 billion.6 Patients who receive pharmacist services achieve better clinical outcomes for chronic diseases than national standards.7
Among patients with a chronic disease, poor adherence tends to result in poor outcomes and increased medical costs. Yet these are the patients who face the most risks in surgery and require the most preoperative care. Several studies have evaluated the frequency of medication nonadherence prior to surgery and its effect on surgery cancellations. These studies have examined a variety of factors related to patient preoperative education, medications, food intake, bowel prep, etc.
In a VA Puget Sound Health Care System study, 23% of patients undergoing ambulatory surgery were nonadherent to preoperative medication instructions.8 Studies have found that up to 7% of cancellations were impacted by medication nonadherence and preoperative education.9-13 Furthermore, studies using large-scale databases have found medically treatable conditions as a significant source of surgical delay.14 Had these conditions been treated a priori, delay in surgery would not have occurred. Unfortunately, it is not clear whether the delays were the result of missed preoperative checks or medication nonadherence.
Ensuring patient safety, including reducing medical errors and adverse events (AEs), is imperative in the surgical workflow. In 1999, the IOM estimated that medical error was a leading cause of death in the U.S. and resulted in up to 100,000 deaths annually.15
In a retrospective study of 15,000 cases, Gawande and colleagues found that 66% of all AEs were surgical and 54% of these were preventable.16 In addition to improving reporting systems, creating a culture of safety with all members of the health care team and building a partnership with patients during preoperative visits can ensure increased adherence and reduced medication AEs. In a neurosurgical cohort of patients, Bernstein and colleagues found that 85% of patients were subjected to at least 1 error; 10% of the errors were major, and 65% were deemed preventable.17
The purpose of this study is to evaluate whether redundancy built into the patient care protocols prior to surgery helps catch errors as demonstrated in time-out analyses.18 Decreasing these errors would lead to fewer surgical cancellations and medical workup delays. The authors hypothesize that a structured preoperative pharmacologic workup would result in decreased preoperative delay in the surgical workflow.
Methods
The study protocol was reviewed and determined to be a quality improvement/quality assurance initiative, which exempted it from institutional review board or other oversight committee review, at the Minneapolis VA Health Care System. The VA OR Efficiency Task Force identified medication adherence as a possible source of delay. A study therefore was undertaken to determine the adherence rate and how it impacted operative delays. Data were extracted from this study to test the stated hypothesis and compare with historic data.
Fifty consecutive patients undergoing neurosurgical procedures from May 2010 through July 2010 were retrospectively reviewed and evaluated. All patients had a preoperative consultation with a pharmacist and the neurosurgery coordinator who reviewed all medications with the patient and gave specific instructions on which medications should be continued or discontinued prior to the surgery date. This information was documented on the OR Medication Compliance Worksheet and included in the patient’s preoperative chart by the neurosurgery coordinator. On the day of surgery, all active medications on this chart were reviewed with the patient by the anesthesiologist and documented on the OR Medication Compliance Worksheet. The worksheet was then sent to the neurosurgery coordinator for secondary review and analysis.
To evaluate delays, the authors reviewed the patient anesthesiology records. Delays were defined as either cancellations of the case due to medication nonadherence, which would make it unsafe to proceed with surgery, or minor delays due to medication nonadherence, which required further preoperative assessment and workup before proceeding with surgery. Cancelled cases were defined as cases on the final copy of the published OR schedule that did not occur.
Medication Adherence Program
In order to ensure medication adherence prior to surgery there were 5 points of contact with a patient from the time the patient was scheduled for surgery and the date of the surgery (Figure 1):
- The coordinator reviewed medications with patient at time of scheduling
- A letter was sent with specific instructions about medications
- Preoperative medicine clearance
- Preoperative neurosurgery appointment
- Call from pharmacist 1 week before surgery
Results
The authors reviewed 10 months of the neurosurgical service prior to initiation of the protocol. Of 317 analyzed cases, 30 were delayed/cancelled. Among these, 5 cases with the possibility of a 6th were cancelled due to medication issues. Following the initialization of the study, 50 patients underwent preoperative counseling with the pharmacist and the neurosurgery coordinator and had an OR Medication Compliance Worksheet created.
Review of the OR Medication Compliance Worksheet demonstrated that 2 patients were nonadherent with their medications.
Discussion
The OR is one of the most expensive areas in an acute care hospital.2 Cancellations or delays can have significant negative financial implications (about $1,500 per hour of lost revenue).19 In order to improve OR efficiency and reduce preoperative delays, the causes of preoperative delays must be determined.
Some delays and cancellations result from either preoperative or perioperative issues. Prolonged wait time and postponement may cause preoperative delays. Perioperative delays include delays in getting into the OR once the patient has arrived in the hospital as well as delays during the operation. These delays can be due to both human error and system deficiencies.20
One Toronto, Canada study looked at the different etiologies for delays in cranial and spinal procedures and found that equipment failure followed by physical transit into the OR were the top reasons for delays.21 These researchers also found that first cases each day sometimes had a higher incidence of delays than did subsequent cases because several ORs prepare to start simultaneously, which causes an increased demand on hospital support services (eg, registration desk, imaging department, nurses in the patient holding area, or transportation). The number of these support staff remains constant throughout the day, whereas the first-case patients all arrive at about the same time, causing a bottleneck in the early morning. The authors looked at 1 facet of the delay problem as an ongoing analysis for hospital efficiency improvement.
With the implementation of a simple 5-step process, medication adherence was > 90% and the impact of nonadherence on surgical procedure delays was eliminated during the trial period. In this sample, nonadherence did not impact surgery, which resulted in fewer delays and cancellations. The process emphasized repetition and communication, involving 5 reminders between the date of OR scheduling and the date of the actual surgery. The authors found that in this quality improvement study, redundancy in the workflow actually improved the efficiency of the patient’s hospital course.
Within the OR, there are many perspectives to consider for improving OR efficiency. For instance, Archer and colleagues present several distinct perspectives: that of the health care institution, the individual practitioner, the patient, and evidenced-based medicine.2 According to Strum and colleagues, OR inefficiency is the sum of under- and overutilized time and efficiency is highest when OR inefficiency is minimized.22 An OR is considered underutilized when it is staffed at regular wages but not used for surgery, setup, or cleanup. An OR is considered overutilized when the OR staff receives overtime wages, multiplied by the relative cost of overtime compared with straight time. Delayed or cancelled surgeries can result in idle operating room staff, while repeat or correlative studies (ie, electrocardiogram, drug levels) may overutilize support services.
Limitations
This study has obvious limitations due to its small scale. Because the protocol implementation resulted in few delays, a very large cohort would have been necessary to attain statistical power.
Conclusion
By improving OR efficiency and reducing preoperative delays, surgical capacity can be increased.
In this study, the authors demonstrate that with little addition of cost, medication nonadherence can be reduced or eliminated as an issue for surgical delays. With the implementation of the 5-step reminder process as well as the addition of a pharmacist consultation/visit, medication adherence was > 90% among preoperative patients in this small study. With the number of patients with complex medication regimens, increasing medication adherence in the preoperative period is not only important in reducing operative delays, but also an opportunity to ensure the patient is safe and optimally treated. ˜
1. Institute of Medicine (US) Committee on Quality of Health Care in America. Crossing the Quality Chasm: A New Health System for the 21st Century. Washing ton, DC: National Academy Press; 2001. https://www.nap.edu/catalog/10027/crossing-the-quality -chasm-a-new-health-system-for-the.
2. Archer T, Macario A. The drive for operating room efficiency will increase quality of patient care. Curr Opin Anaesthesiol. 2006;19(2):171-176.
3. Lundy J; Kaiser Family Foundation. Prescription drug trends. https://kaiserfamilyfoundation.files .wordpress.com/2013/01/3057-08.pdf. Published May 2010. Accessed January 26, 2017.
4. Osterberg L, Blaschke T. Adherence to medication. N Engl J Med. 2005;353(5):487-497.
5. DiMatteo MR. Variations in patients’ adherence to medical recommendations: a quantitative review of 50 years of research. Med Care. 2004;42(3):200-209.
6. National Priorities Partnership, NEHI. Improving patient medication adherence: a $100+ billion opportunity. http://adhereforhealth.org/wp-content/uploads/pdf/ImprovingPatientMedicationAdherence-NPP_Patient_Medication_Adherence_NQF.pdf. Published April 2011. Accessed January 26, 2017.
7. Kripalani S, Yao X, Haynes RB. Interventions to enhance medication adherence in chronic medical conditions: a systematic review. Arch Intern Med. 2007;167(6):540-550.
8. Chew JD, Bradley KA, Flum DR, Cornia PB, Koepsell TD. The impact of low health literacy on surgical practice. Am J Surg. 2004;188(3):250-253.
9. van Klei WA, Moons KG, Rutten CL, et al. The effect of outpatient preoperative evaluation of hospital inpatients on cancellation of surgery and length of hospital stay. Anesth Analg. 2002;94(3):644-649.
10. Sanjay P, Dodds A, Miller E, Arumugam PJ, Woodward A. Cancelled elective operations: an observational study from a district general hospital. J Health Organ Manag. 2007;21(1):54-58.
11. Schofield WN, Rubin GL, Piza M, et al. Cancellation of operations on the day of intended surgery at a major Australian referral hospital. Med J Aust. 2005;182(12):612-615.
12. Zafar A, Mufti TS, Griffin S, Ahmed S, Ansari JA. Cancelled elective general surgical operations in Ayub Teaching Hospital. J Ayub Med Coll Abbottabad. 2007;19(3):64-66.
13. Knox M, Myers E, Hurley M. The impact of pre-operative assessment clinics on elective surgical case cancellations. Surgeon. 2009;7(2):76-78.
14. Phruetthiphat OA, Gao Y, Anthony CA, Pugely AJ, Warth LC, Callaghan JJ. Incidence of and preoperative risk factors for surgical delay in primary total hip arthroplasty: analysis from the American College of Surgeons National Surgical Quality Improvement Program. J Arthroplasty. 2016;31(11): 2432-2436.
15. Kohn LT, Corrigan JM, Donaldson MD, eds; Institute of Medicine; Committee on Quality of Health Care in America. To Err Is Human: Building a Safer Health System. Washington, DC: National Academies; 2000. https://www.nap.edu/catalog/9728/to-err-is-human-building-a-safer-health-system.
16. Gawande AA, Thomas EJ, Zinner MJ, Brennan TA. The incidence and nature of surgical adverse events in Colorado and Utah in 1992. Surgery. 1999;126(1):66-75.
17. Bernstein M, Massicotte E, Etchells E. Error in neurosurgery: a prospective pilot study. Can J Neurol Sci. 2001;28(suppl 2):S60.
18. Altpeter T, Luckhardt K, Lewis JN, Harken AH, Polk HC Jr. Expanded surgical time out: a key to real-time data collection and quality improvement. J Am Coll Surg. 2007;204(4):527-532.
19. Dexter F, Marcon E, Epstein RH, Ledolter J. Validation of statistical methods to compare cancellation rates on the day of surgery. Anesth Analg. 2005;101(2):465-473.
20. Etchells E, O’Neill C, Bernstein M. Patient safety in surgery: error detection and prevention. World J Surg. 2003;27(8):936-941.
21. Wong J, Khu KJ, Kaderali Z, Bernstein M. Delays in the operating room: signs of an imperfect system. Can J Surg. 2010;53(3):189-195.
22. Strum DP, Vargas LG, May JH. Surgical subspecialty block utilization and capacity planning: a minimal cost analysis model. Anesthesiology. 1999;90(4):1176-1185.
1. Institute of Medicine (US) Committee on Quality of Health Care in America. Crossing the Quality Chasm: A New Health System for the 21st Century. Washing ton, DC: National Academy Press; 2001. https://www.nap.edu/catalog/10027/crossing-the-quality -chasm-a-new-health-system-for-the.
2. Archer T, Macario A. The drive for operating room efficiency will increase quality of patient care. Curr Opin Anaesthesiol. 2006;19(2):171-176.
3. Lundy J; Kaiser Family Foundation. Prescription drug trends. https://kaiserfamilyfoundation.files .wordpress.com/2013/01/3057-08.pdf. Published May 2010. Accessed January 26, 2017.
4. Osterberg L, Blaschke T. Adherence to medication. N Engl J Med. 2005;353(5):487-497.
5. DiMatteo MR. Variations in patients’ adherence to medical recommendations: a quantitative review of 50 years of research. Med Care. 2004;42(3):200-209.
6. National Priorities Partnership, NEHI. Improving patient medication adherence: a $100+ billion opportunity. http://adhereforhealth.org/wp-content/uploads/pdf/ImprovingPatientMedicationAdherence-NPP_Patient_Medication_Adherence_NQF.pdf. Published April 2011. Accessed January 26, 2017.
7. Kripalani S, Yao X, Haynes RB. Interventions to enhance medication adherence in chronic medical conditions: a systematic review. Arch Intern Med. 2007;167(6):540-550.
8. Chew JD, Bradley KA, Flum DR, Cornia PB, Koepsell TD. The impact of low health literacy on surgical practice. Am J Surg. 2004;188(3):250-253.
9. van Klei WA, Moons KG, Rutten CL, et al. The effect of outpatient preoperative evaluation of hospital inpatients on cancellation of surgery and length of hospital stay. Anesth Analg. 2002;94(3):644-649.
10. Sanjay P, Dodds A, Miller E, Arumugam PJ, Woodward A. Cancelled elective operations: an observational study from a district general hospital. J Health Organ Manag. 2007;21(1):54-58.
11. Schofield WN, Rubin GL, Piza M, et al. Cancellation of operations on the day of intended surgery at a major Australian referral hospital. Med J Aust. 2005;182(12):612-615.
12. Zafar A, Mufti TS, Griffin S, Ahmed S, Ansari JA. Cancelled elective general surgical operations in Ayub Teaching Hospital. J Ayub Med Coll Abbottabad. 2007;19(3):64-66.
13. Knox M, Myers E, Hurley M. The impact of pre-operative assessment clinics on elective surgical case cancellations. Surgeon. 2009;7(2):76-78.
14. Phruetthiphat OA, Gao Y, Anthony CA, Pugely AJ, Warth LC, Callaghan JJ. Incidence of and preoperative risk factors for surgical delay in primary total hip arthroplasty: analysis from the American College of Surgeons National Surgical Quality Improvement Program. J Arthroplasty. 2016;31(11): 2432-2436.
15. Kohn LT, Corrigan JM, Donaldson MD, eds; Institute of Medicine; Committee on Quality of Health Care in America. To Err Is Human: Building a Safer Health System. Washington, DC: National Academies; 2000. https://www.nap.edu/catalog/9728/to-err-is-human-building-a-safer-health-system.
16. Gawande AA, Thomas EJ, Zinner MJ, Brennan TA. The incidence and nature of surgical adverse events in Colorado and Utah in 1992. Surgery. 1999;126(1):66-75.
17. Bernstein M, Massicotte E, Etchells E. Error in neurosurgery: a prospective pilot study. Can J Neurol Sci. 2001;28(suppl 2):S60.
18. Altpeter T, Luckhardt K, Lewis JN, Harken AH, Polk HC Jr. Expanded surgical time out: a key to real-time data collection and quality improvement. J Am Coll Surg. 2007;204(4):527-532.
19. Dexter F, Marcon E, Epstein RH, Ledolter J. Validation of statistical methods to compare cancellation rates on the day of surgery. Anesth Analg. 2005;101(2):465-473.
20. Etchells E, O’Neill C, Bernstein M. Patient safety in surgery: error detection and prevention. World J Surg. 2003;27(8):936-941.
21. Wong J, Khu KJ, Kaderali Z, Bernstein M. Delays in the operating room: signs of an imperfect system. Can J Surg. 2010;53(3):189-195.
22. Strum DP, Vargas LG, May JH. Surgical subspecialty block utilization and capacity planning: a minimal cost analysis model. Anesthesiology. 1999;90(4):1176-1185.
New and Updated FDA Boxed Warnings
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. These and other label changes are searchable in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
IMODIUM (LOPERAMIDE HYDROCHLORIDE):
- New warning December 2016
WARNING: TORSADES DE POINTES AND SUDDEN DEATH
Cases of Torsades de Pointes, cardiac arrest, and death have been reported with the use of a higher than recommended dosages of Imodium (see WARNINGS and OVERDOSAGE).
Imodium is contraindicated in pediatric patients less than 2 years of age (see CONTRANIDICATIONS).
Avoid Imodium dosages higher than recommended in adults and pediatric patients 2 years of age and older due to the risk of serious cardiac adverse reactions (see DOSAGE AND ADMINISTRATION).
AUBAGIO (TERIFLUNOMIDE) TABLETS:
- Edited and updated warning December 2016
Risk of Teratogenicity
Aubagio is contraindicated for use in pregnant women and in women of reproductive potential who are not using effective contraception because of the potential for fetal harm. Teratogenicity and embryolethality occurred in animals at plasma teriflunomide exposures lower than that in humans. Exclude pregnancy before the start of treatment with Aubagio in females of reproductive potential. Advise females of reproductive potential to use effective contraception during Aubagio treatment and during an accelerated drug elimination procedure after Aubagio treatment. Stop Aubagio and use an accelerated drug elimination procedure if the patient becomes pregnant.
PROMACTA (ELTROMBOPAG) TABLETS, FOR ORAL USE AND ORAL SUSPENSION:
- Edited and updated warning December 2016
Chronic Hepatitis C
Promacta may increase the risk of severe and potentially lifethreatening hepatotoxicity. Monitor hepatic function and discontinue dosing as recommended.
ICLUSIG (PONATINIB HYDROCHLORIDE):
- Edited and updated warning December 2016
WARNING: ARTERIAL OCCLUSION, VENOUS THROMBOEMBOLISM, HEART FAILURE, and HEPATOTOXICITY
Arterial Occlusion
Arterial occlusions have occurred in at least 35% of Iclusig-treated patients. Some patients experienced more than 1 type of event. Events observed included fatal myocardial infarction, stroke, stenosis of large arterial vessels of the brain, severe peripheral vascular disease, and the need for urgent revascularization procedures. Patients with and without cardiovascular risk factors, including patients age 50 years or younger, experienced these events. Monitor for evidence of arterial occlusion. Interrupt or stop Iclusig immediately for arterial occlusion.
Venous Thromboembolism
Venous occlusive events have occurred in 6% of Iclusig-treated patients. Monitor for evidence of venous thromboembolism. Consider dose modification or discontinuation of Iclusig in patients who develop serious venous thromboembolism.
Heart Failure
Heart failure, including fatalities, occurred in 9% of Iclusig-treated patients.
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. These and other label changes are searchable in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
IMODIUM (LOPERAMIDE HYDROCHLORIDE):
- New warning December 2016
WARNING: TORSADES DE POINTES AND SUDDEN DEATH
Cases of Torsades de Pointes, cardiac arrest, and death have been reported with the use of a higher than recommended dosages of Imodium (see WARNINGS and OVERDOSAGE).
Imodium is contraindicated in pediatric patients less than 2 years of age (see CONTRANIDICATIONS).
Avoid Imodium dosages higher than recommended in adults and pediatric patients 2 years of age and older due to the risk of serious cardiac adverse reactions (see DOSAGE AND ADMINISTRATION).
AUBAGIO (TERIFLUNOMIDE) TABLETS:
- Edited and updated warning December 2016
Risk of Teratogenicity
Aubagio is contraindicated for use in pregnant women and in women of reproductive potential who are not using effective contraception because of the potential for fetal harm. Teratogenicity and embryolethality occurred in animals at plasma teriflunomide exposures lower than that in humans. Exclude pregnancy before the start of treatment with Aubagio in females of reproductive potential. Advise females of reproductive potential to use effective contraception during Aubagio treatment and during an accelerated drug elimination procedure after Aubagio treatment. Stop Aubagio and use an accelerated drug elimination procedure if the patient becomes pregnant.
PROMACTA (ELTROMBOPAG) TABLETS, FOR ORAL USE AND ORAL SUSPENSION:
- Edited and updated warning December 2016
Chronic Hepatitis C
Promacta may increase the risk of severe and potentially lifethreatening hepatotoxicity. Monitor hepatic function and discontinue dosing as recommended.
ICLUSIG (PONATINIB HYDROCHLORIDE):
- Edited and updated warning December 2016
WARNING: ARTERIAL OCCLUSION, VENOUS THROMBOEMBOLISM, HEART FAILURE, and HEPATOTOXICITY
Arterial Occlusion
Arterial occlusions have occurred in at least 35% of Iclusig-treated patients. Some patients experienced more than 1 type of event. Events observed included fatal myocardial infarction, stroke, stenosis of large arterial vessels of the brain, severe peripheral vascular disease, and the need for urgent revascularization procedures. Patients with and without cardiovascular risk factors, including patients age 50 years or younger, experienced these events. Monitor for evidence of arterial occlusion. Interrupt or stop Iclusig immediately for arterial occlusion.
Venous Thromboembolism
Venous occlusive events have occurred in 6% of Iclusig-treated patients. Monitor for evidence of venous thromboembolism. Consider dose modification or discontinuation of Iclusig in patients who develop serious venous thromboembolism.
Heart Failure
Heart failure, including fatalities, occurred in 9% of Iclusig-treated patients.
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. These and other label changes are searchable in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
IMODIUM (LOPERAMIDE HYDROCHLORIDE):
- New warning December 2016
WARNING: TORSADES DE POINTES AND SUDDEN DEATH
Cases of Torsades de Pointes, cardiac arrest, and death have been reported with the use of a higher than recommended dosages of Imodium (see WARNINGS and OVERDOSAGE).
Imodium is contraindicated in pediatric patients less than 2 years of age (see CONTRANIDICATIONS).
Avoid Imodium dosages higher than recommended in adults and pediatric patients 2 years of age and older due to the risk of serious cardiac adverse reactions (see DOSAGE AND ADMINISTRATION).
AUBAGIO (TERIFLUNOMIDE) TABLETS:
- Edited and updated warning December 2016
Risk of Teratogenicity
Aubagio is contraindicated for use in pregnant women and in women of reproductive potential who are not using effective contraception because of the potential for fetal harm. Teratogenicity and embryolethality occurred in animals at plasma teriflunomide exposures lower than that in humans. Exclude pregnancy before the start of treatment with Aubagio in females of reproductive potential. Advise females of reproductive potential to use effective contraception during Aubagio treatment and during an accelerated drug elimination procedure after Aubagio treatment. Stop Aubagio and use an accelerated drug elimination procedure if the patient becomes pregnant.
PROMACTA (ELTROMBOPAG) TABLETS, FOR ORAL USE AND ORAL SUSPENSION:
- Edited and updated warning December 2016
Chronic Hepatitis C
Promacta may increase the risk of severe and potentially lifethreatening hepatotoxicity. Monitor hepatic function and discontinue dosing as recommended.
ICLUSIG (PONATINIB HYDROCHLORIDE):
- Edited and updated warning December 2016
WARNING: ARTERIAL OCCLUSION, VENOUS THROMBOEMBOLISM, HEART FAILURE, and HEPATOTOXICITY
Arterial Occlusion
Arterial occlusions have occurred in at least 35% of Iclusig-treated patients. Some patients experienced more than 1 type of event. Events observed included fatal myocardial infarction, stroke, stenosis of large arterial vessels of the brain, severe peripheral vascular disease, and the need for urgent revascularization procedures. Patients with and without cardiovascular risk factors, including patients age 50 years or younger, experienced these events. Monitor for evidence of arterial occlusion. Interrupt or stop Iclusig immediately for arterial occlusion.
Venous Thromboembolism
Venous occlusive events have occurred in 6% of Iclusig-treated patients. Monitor for evidence of venous thromboembolism. Consider dose modification or discontinuation of Iclusig in patients who develop serious venous thromboembolism.
Heart Failure
Heart failure, including fatalities, occurred in 9% of Iclusig-treated patients.
IHS Gives Pharmacy Students Hands-On Experience
The IHS has partnered with 3 top American universities to give pharmacy students an opportunity to get real-life work experience and potentially careers at IHS facilities.
Related: Dangerous Staff Shortages in the IHS
In the IHS Advanced Pharmacy Practice Experience Program, PharmD candidates at Howard University, Purdue University, and the University of Southern California will join students from more than 80 universities in 39 states to complete rotations at IHS direct service facilities. “Many return to start their career in providing quality health care to the American Indian and Alaska Native community,” said Mary Smith, IHS principal deputy director.
“My experience with IHS as a student inspired me to apply to work here when I graduated,” said Fengyee Zhou, now a pharmacist at the IHS Whiteriver Indian Hospital in Arizona. “The level of teamwork among all health care disciplines and the extent to which pharmacists engage in patient care activities brought me back to Whiteriver.”
Related: What s the VA? The Largest Educator of Health Care Professionals in the U.S.
The IHS also offers internships, externships, rotations, and residencies to pharmacy, behavioral health, dentistry, optometry, nursing, and medical students.
The IHS has partnered with 3 top American universities to give pharmacy students an opportunity to get real-life work experience and potentially careers at IHS facilities.
Related: Dangerous Staff Shortages in the IHS
In the IHS Advanced Pharmacy Practice Experience Program, PharmD candidates at Howard University, Purdue University, and the University of Southern California will join students from more than 80 universities in 39 states to complete rotations at IHS direct service facilities. “Many return to start their career in providing quality health care to the American Indian and Alaska Native community,” said Mary Smith, IHS principal deputy director.
“My experience with IHS as a student inspired me to apply to work here when I graduated,” said Fengyee Zhou, now a pharmacist at the IHS Whiteriver Indian Hospital in Arizona. “The level of teamwork among all health care disciplines and the extent to which pharmacists engage in patient care activities brought me back to Whiteriver.”
Related: What s the VA? The Largest Educator of Health Care Professionals in the U.S.
The IHS also offers internships, externships, rotations, and residencies to pharmacy, behavioral health, dentistry, optometry, nursing, and medical students.
The IHS has partnered with 3 top American universities to give pharmacy students an opportunity to get real-life work experience and potentially careers at IHS facilities.
Related: Dangerous Staff Shortages in the IHS
In the IHS Advanced Pharmacy Practice Experience Program, PharmD candidates at Howard University, Purdue University, and the University of Southern California will join students from more than 80 universities in 39 states to complete rotations at IHS direct service facilities. “Many return to start their career in providing quality health care to the American Indian and Alaska Native community,” said Mary Smith, IHS principal deputy director.
“My experience with IHS as a student inspired me to apply to work here when I graduated,” said Fengyee Zhou, now a pharmacist at the IHS Whiteriver Indian Hospital in Arizona. “The level of teamwork among all health care disciplines and the extent to which pharmacists engage in patient care activities brought me back to Whiteriver.”
Related: What s the VA? The Largest Educator of Health Care Professionals in the U.S.
The IHS also offers internships, externships, rotations, and residencies to pharmacy, behavioral health, dentistry, optometry, nursing, and medical students.
Recent FDA Boxed Warnings
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. You can search these and other label changes in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
QUINOLONE:
- Edited and updated warning September 2016
WARNING: SERIOUS ADVERSE REACTIONS INCLUDING TENDINITIS, TENDON RUPTURE, PERIPHERAL NEUROPATHY, CENTRAL NERVOUS SYSTEM EFFECTS AND EXACERBATION OF MYASTHENIA GRAVIS
Fluoroquinolones have been associated with disabling and potentially irreversible serious adverse reactions that have occurred together including:
- Tendinitis and tendon rupture
- Peripheral neuropathy
- Central nervous system effects
Discontinue immediately and avoid the use of fluoroquinolones in patients who experience any of these serious adverse reactions. Fluoroquinolones may exacerbate muscle weakness in patients with myasthenia gravis. Avoid quinolones in patients with known history of myasthenia gravis. Because fluoroquinolones
have been associated with serious adverse reactions, reserve quinolones for use in patients who have no alternative treatment options for the following
indications:
Avelox (moxifloxacin hydrochloride): Avelox in sodium chloride 0.8% in plastic container; moxifloxacin hydrochloride; Cipro in dextrose 5% in plastic container):
Acute bacterial sinusitis, acute bacterial exacerbation of chronic bronchitis.
Cipro (ciprofloxacin; ciprofloxacin hydrochloride): Acute exacerbation of chronic bronchitis, acute uncomplicated cystitis, and acute sinusitis.
Cipro XR; Noroxin (norfloxacin): Uncomplicated urinary tract infections.
Factive (gemifloxacin mesylate): Acute bacterial exacerbation of chronic bronchitis.
Levaquin (levofloxacin): Uncomplicated urinary tract infection, acute bacterial exacerbation of chronic bronchitis, and acute bacterial sinusitis.
KRYSTEXXA (PEGLOTICASE):
- Added section to warning September 2016
WARNING: ANAPHYLAXIS AND INFUSION REACTIONS; G6PD DEFICIENCY ASSOCIATED HEMOLYSIS AND METHEMOGLOBINEMIA (Title Updated)
Addition of: Screen patients at risk for G6PD deficiency prior to starting Krystexxa. Hemolysis and methemoglobinemia have been reported with Krystexxa in patients with G6PD deficiency. Do not administer Krystexxa to patients with G6PD deficiency.
PLAVIX (CLOPIDOGREL BISULFATE):
- Edited and updated warning September 2016
WARNING: DIMINISHED ANTIPLATELET EFFECT IN PATIENTS WITH TWO LOSS-OF-FUNCTION ALLELES OF THE CYP2C19 GENE
The effectiveness of Plavix results from its antiplatelet activity, which is dependent on its conversion to an active metabolite by the cytochrome P450 (CYP) system, principally CYP2C19. Plavix at recommended doses forms less of the active metabolite and so has a reduced effect on platelet activity in patients who are homozygous for nonfunctional alleles of the CYP2C19 gene, (termed “CYP2C19 poor metabolizers”). Tests are available to identify patients who are CYP2C19 poor metabolizers. Consider use of another platelet P2Y12 inhibitor in patients identified as CYP2C19 poor metabolizers.
SYNJARDY (EMPAGLIFLOZIN; METFORMIN HYDROCHLORIDE):
- Edited and updated warning September 2016
Postmarketing cases of metformin-associated lactic acidosis have resulted in death, hypothermia, hypotension, and resistant bradyarrhythmias. The onset of metformin-associated lactic acidosis is often subtle, accompanied only by nonspecific symptoms such as malaise, myalgias, respiratory distress, somnolence, and abdominal pain. Metforminassociated lactic acidosis was characterized by elevated blood lactate levels (> 5 mmol/Liter), anion gap acidosis (without evidence of ketonuria or ketonemia), an increased lactate/pyruvate ratio; and metformin plasma levels generally > 5 mcg/mL.
Risk factors for metformin-associated lactic acidosis include renal impairment, concomitant use of certain drugs (e.g., carbonic anhydrase inhibitors such as topiramate), age 65 years old or greater, having a radiological study with contrast, surgery and other procedures, hypoxic states (e.g., acute congestive heart failure), excessive alcohol intake, and hepatic impairment.
Steps to reduce the risk of and manage metformin-associated lactic acidosis in these high-risk groups are provided in the full prescribing information.
If metformin-associated lactic acidosis is suspected, immediately discontinue Synjardy and institute general supportive measures in a hospital setting. Prompt hemodialysis is recommended.
ZYDELIG (IDELALISIB)
- Edited and updated warning September 2016
WARNING: FATAL AND SERIOUS TOXICITIES: HEPATIC, SEVERE DIARRHEA, COLITIS, PNEUMONITIS, INFECTIONS, AND INTESTINAL PERFORATION
- Fatal and/or serious hepatotoxicity occurred in 11 % to 18% of Zydelig-treated patients. Monitor hepatic function prior to and during treatment. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious and severe diarrhea or colitis occurred in 14% to 19% of Zydelig-treated patients. Monitor for the development of severe diarrhea or colitis. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious pneumonitis occurred in 4% of Zydelig-treated patients. Monitor for pulmonary symptoms and bilateral interstitial infiltrates. Interrupt or discontinue Zydelig as recommended.
- Fatal and/or serious infections occurred in 21% to 36% of Zydelig-treated patients. Monitor for signs and symptoms of infection. Interrupt Zydelig if infection is suspected.
- Fatal and serious intestinal perforation can occur in Zydelig-treated patients across clinical trials. Discontinue Zydelig for intestinal perforation.
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. You can search these and other label changes in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
QUINOLONE:
- Edited and updated warning September 2016
WARNING: SERIOUS ADVERSE REACTIONS INCLUDING TENDINITIS, TENDON RUPTURE, PERIPHERAL NEUROPATHY, CENTRAL NERVOUS SYSTEM EFFECTS AND EXACERBATION OF MYASTHENIA GRAVIS
Fluoroquinolones have been associated with disabling and potentially irreversible serious adverse reactions that have occurred together including:
- Tendinitis and tendon rupture
- Peripheral neuropathy
- Central nervous system effects
Discontinue immediately and avoid the use of fluoroquinolones in patients who experience any of these serious adverse reactions. Fluoroquinolones may exacerbate muscle weakness in patients with myasthenia gravis. Avoid quinolones in patients with known history of myasthenia gravis. Because fluoroquinolones
have been associated with serious adverse reactions, reserve quinolones for use in patients who have no alternative treatment options for the following
indications:
Avelox (moxifloxacin hydrochloride): Avelox in sodium chloride 0.8% in plastic container; moxifloxacin hydrochloride; Cipro in dextrose 5% in plastic container):
Acute bacterial sinusitis, acute bacterial exacerbation of chronic bronchitis.
Cipro (ciprofloxacin; ciprofloxacin hydrochloride): Acute exacerbation of chronic bronchitis, acute uncomplicated cystitis, and acute sinusitis.
Cipro XR; Noroxin (norfloxacin): Uncomplicated urinary tract infections.
Factive (gemifloxacin mesylate): Acute bacterial exacerbation of chronic bronchitis.
Levaquin (levofloxacin): Uncomplicated urinary tract infection, acute bacterial exacerbation of chronic bronchitis, and acute bacterial sinusitis.
KRYSTEXXA (PEGLOTICASE):
- Added section to warning September 2016
WARNING: ANAPHYLAXIS AND INFUSION REACTIONS; G6PD DEFICIENCY ASSOCIATED HEMOLYSIS AND METHEMOGLOBINEMIA (Title Updated)
Addition of: Screen patients at risk for G6PD deficiency prior to starting Krystexxa. Hemolysis and methemoglobinemia have been reported with Krystexxa in patients with G6PD deficiency. Do not administer Krystexxa to patients with G6PD deficiency.
PLAVIX (CLOPIDOGREL BISULFATE):
- Edited and updated warning September 2016
WARNING: DIMINISHED ANTIPLATELET EFFECT IN PATIENTS WITH TWO LOSS-OF-FUNCTION ALLELES OF THE CYP2C19 GENE
The effectiveness of Plavix results from its antiplatelet activity, which is dependent on its conversion to an active metabolite by the cytochrome P450 (CYP) system, principally CYP2C19. Plavix at recommended doses forms less of the active metabolite and so has a reduced effect on platelet activity in patients who are homozygous for nonfunctional alleles of the CYP2C19 gene, (termed “CYP2C19 poor metabolizers”). Tests are available to identify patients who are CYP2C19 poor metabolizers. Consider use of another platelet P2Y12 inhibitor in patients identified as CYP2C19 poor metabolizers.
SYNJARDY (EMPAGLIFLOZIN; METFORMIN HYDROCHLORIDE):
- Edited and updated warning September 2016
Postmarketing cases of metformin-associated lactic acidosis have resulted in death, hypothermia, hypotension, and resistant bradyarrhythmias. The onset of metformin-associated lactic acidosis is often subtle, accompanied only by nonspecific symptoms such as malaise, myalgias, respiratory distress, somnolence, and abdominal pain. Metforminassociated lactic acidosis was characterized by elevated blood lactate levels (> 5 mmol/Liter), anion gap acidosis (without evidence of ketonuria or ketonemia), an increased lactate/pyruvate ratio; and metformin plasma levels generally > 5 mcg/mL.
Risk factors for metformin-associated lactic acidosis include renal impairment, concomitant use of certain drugs (e.g., carbonic anhydrase inhibitors such as topiramate), age 65 years old or greater, having a radiological study with contrast, surgery and other procedures, hypoxic states (e.g., acute congestive heart failure), excessive alcohol intake, and hepatic impairment.
Steps to reduce the risk of and manage metformin-associated lactic acidosis in these high-risk groups are provided in the full prescribing information.
If metformin-associated lactic acidosis is suspected, immediately discontinue Synjardy and institute general supportive measures in a hospital setting. Prompt hemodialysis is recommended.
ZYDELIG (IDELALISIB)
- Edited and updated warning September 2016
WARNING: FATAL AND SERIOUS TOXICITIES: HEPATIC, SEVERE DIARRHEA, COLITIS, PNEUMONITIS, INFECTIONS, AND INTESTINAL PERFORATION
- Fatal and/or serious hepatotoxicity occurred in 11 % to 18% of Zydelig-treated patients. Monitor hepatic function prior to and during treatment. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious and severe diarrhea or colitis occurred in 14% to 19% of Zydelig-treated patients. Monitor for the development of severe diarrhea or colitis. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious pneumonitis occurred in 4% of Zydelig-treated patients. Monitor for pulmonary symptoms and bilateral interstitial infiltrates. Interrupt or discontinue Zydelig as recommended.
- Fatal and/or serious infections occurred in 21% to 36% of Zydelig-treated patients. Monitor for signs and symptoms of infection. Interrupt Zydelig if infection is suspected.
- Fatal and serious intestinal perforation can occur in Zydelig-treated patients across clinical trials. Discontinue Zydelig for intestinal perforation.
The FDA’s MedWatch program safety labeling changes for boxed warnings are compiled quarterly for drugs and therapeutic biologics where important changes have been made to the safety information. You can search these and other label changes in the Drug Safety Labeling Changes (SLC) database, where data are available to the public in downloadable and searchable formats. Boxed warnings are ordinarily used to highlight either adverse reactions so serious in proportion to the potential bene t from the drug that it is essential that it be considered in assessing the risks and bene ts of using the drug; or serious adverse reactions that can be prevented/reduced in frequency or severity by appropriate use of the drug; or FDA approved the drug with restrictions to ensure safe use because FDA concluded that the drug can be safely used only if distribution or use is restricted.
QUINOLONE:
- Edited and updated warning September 2016
WARNING: SERIOUS ADVERSE REACTIONS INCLUDING TENDINITIS, TENDON RUPTURE, PERIPHERAL NEUROPATHY, CENTRAL NERVOUS SYSTEM EFFECTS AND EXACERBATION OF MYASTHENIA GRAVIS
Fluoroquinolones have been associated with disabling and potentially irreversible serious adverse reactions that have occurred together including:
- Tendinitis and tendon rupture
- Peripheral neuropathy
- Central nervous system effects
Discontinue immediately and avoid the use of fluoroquinolones in patients who experience any of these serious adverse reactions. Fluoroquinolones may exacerbate muscle weakness in patients with myasthenia gravis. Avoid quinolones in patients with known history of myasthenia gravis. Because fluoroquinolones
have been associated with serious adverse reactions, reserve quinolones for use in patients who have no alternative treatment options for the following
indications:
Avelox (moxifloxacin hydrochloride): Avelox in sodium chloride 0.8% in plastic container; moxifloxacin hydrochloride; Cipro in dextrose 5% in plastic container):
Acute bacterial sinusitis, acute bacterial exacerbation of chronic bronchitis.
Cipro (ciprofloxacin; ciprofloxacin hydrochloride): Acute exacerbation of chronic bronchitis, acute uncomplicated cystitis, and acute sinusitis.
Cipro XR; Noroxin (norfloxacin): Uncomplicated urinary tract infections.
Factive (gemifloxacin mesylate): Acute bacterial exacerbation of chronic bronchitis.
Levaquin (levofloxacin): Uncomplicated urinary tract infection, acute bacterial exacerbation of chronic bronchitis, and acute bacterial sinusitis.
KRYSTEXXA (PEGLOTICASE):
- Added section to warning September 2016
WARNING: ANAPHYLAXIS AND INFUSION REACTIONS; G6PD DEFICIENCY ASSOCIATED HEMOLYSIS AND METHEMOGLOBINEMIA (Title Updated)
Addition of: Screen patients at risk for G6PD deficiency prior to starting Krystexxa. Hemolysis and methemoglobinemia have been reported with Krystexxa in patients with G6PD deficiency. Do not administer Krystexxa to patients with G6PD deficiency.
PLAVIX (CLOPIDOGREL BISULFATE):
- Edited and updated warning September 2016
WARNING: DIMINISHED ANTIPLATELET EFFECT IN PATIENTS WITH TWO LOSS-OF-FUNCTION ALLELES OF THE CYP2C19 GENE
The effectiveness of Plavix results from its antiplatelet activity, which is dependent on its conversion to an active metabolite by the cytochrome P450 (CYP) system, principally CYP2C19. Plavix at recommended doses forms less of the active metabolite and so has a reduced effect on platelet activity in patients who are homozygous for nonfunctional alleles of the CYP2C19 gene, (termed “CYP2C19 poor metabolizers”). Tests are available to identify patients who are CYP2C19 poor metabolizers. Consider use of another platelet P2Y12 inhibitor in patients identified as CYP2C19 poor metabolizers.
SYNJARDY (EMPAGLIFLOZIN; METFORMIN HYDROCHLORIDE):
- Edited and updated warning September 2016
Postmarketing cases of metformin-associated lactic acidosis have resulted in death, hypothermia, hypotension, and resistant bradyarrhythmias. The onset of metformin-associated lactic acidosis is often subtle, accompanied only by nonspecific symptoms such as malaise, myalgias, respiratory distress, somnolence, and abdominal pain. Metforminassociated lactic acidosis was characterized by elevated blood lactate levels (> 5 mmol/Liter), anion gap acidosis (without evidence of ketonuria or ketonemia), an increased lactate/pyruvate ratio; and metformin plasma levels generally > 5 mcg/mL.
Risk factors for metformin-associated lactic acidosis include renal impairment, concomitant use of certain drugs (e.g., carbonic anhydrase inhibitors such as topiramate), age 65 years old or greater, having a radiological study with contrast, surgery and other procedures, hypoxic states (e.g., acute congestive heart failure), excessive alcohol intake, and hepatic impairment.
Steps to reduce the risk of and manage metformin-associated lactic acidosis in these high-risk groups are provided in the full prescribing information.
If metformin-associated lactic acidosis is suspected, immediately discontinue Synjardy and institute general supportive measures in a hospital setting. Prompt hemodialysis is recommended.
ZYDELIG (IDELALISIB)
- Edited and updated warning September 2016
WARNING: FATAL AND SERIOUS TOXICITIES: HEPATIC, SEVERE DIARRHEA, COLITIS, PNEUMONITIS, INFECTIONS, AND INTESTINAL PERFORATION
- Fatal and/or serious hepatotoxicity occurred in 11 % to 18% of Zydelig-treated patients. Monitor hepatic function prior to and during treatment. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious and severe diarrhea or colitis occurred in 14% to 19% of Zydelig-treated patients. Monitor for the development of severe diarrhea or colitis. Interrupt and then reduce or discontinue Zydelig as recommended.
- Fatal and/or serious pneumonitis occurred in 4% of Zydelig-treated patients. Monitor for pulmonary symptoms and bilateral interstitial infiltrates. Interrupt or discontinue Zydelig as recommended.
- Fatal and/or serious infections occurred in 21% to 36% of Zydelig-treated patients. Monitor for signs and symptoms of infection. Interrupt Zydelig if infection is suspected.
- Fatal and serious intestinal perforation can occur in Zydelig-treated patients across clinical trials. Discontinue Zydelig for intestinal perforation.
A Primary Hospital Antimicrobial Stewardship Intervention on Pneumonia Treatment Duration
The safety and the efficacy of shorter durations of antibiotic therapy for uncomplicated pneumonia have been clearly established in the past decade.1,2 Guidelines from the Infectious Diseases Society of America (IDSA) and the American Thoracic Society have been available since 2007. These expert consensus statements recommend that uncomplicated community-acquired pneumonia (CAP) should be treated for 5 to 7 days, as long as the patient exhibits signs and symptoms of clinical stability.3 Similarly, recently updated guidelines for hospital-acquired and ventilator-associated pneumonias call for short-course therapy.4 Despite this guidance, pneumonia treatment duration is often discordant.5 Unnecessary antimicrobial use is associated with greater selection pressure on pathogens, increased risk of adverse events (AEs), and elevated treatment costs.6 The growing burden of antibiotic resistance coupled with limited availability of new antibiotics requires judicious use of these agents.
The IDSA guidelines for Clostridium difficile infection (CDI) note that exposure to antimicrobial agents is the most important modifiable risk factor for the development of CDI.7 Longer durations of antibiotics increase the risk of CDI compared with shorter durations.8,9 Antibiotics are a frequent cause of drug-associated AEs and likely are underestimated.10 To decrease the unwanted effects of excessive therapy, IDSA and CDC suggest that antimicrobial stewardship interventions should be implemented.11-13
Antimicrobial stewardship efforts in small community hospitals (also known as district, rural, general, and primary hospitals) are varied and can be challenging due to limited staff and resources.14,15 The World Health Organization defines a primary care facility as having few specialties, mainly internal medicine and general surgery with limited laboratory services for general (but not specialized) pathologic analysis, and bed size ranging from 30 to 200 beds.16 Although guidance is available for effective intervention strategies in smaller hospitals, there are limited data in the literature regarding successful outcomes.17-22
The purpose of this study was to establish the need and evaluate the impact of a pharmacy-initiated 3-part intervention targeting treatment duration in patients hospitalized with uncomplicated pneumonia in a primary hospital setting. The Veterans Health Care System of the Ozarks (VHSO) in Fayetteville, Arkansas, has 50 acute care beds, including 7 intensive care unit beds and excluding 15 mental health beds. The pharmacy is staffed 24 hours a day. Acute-care providers consist of 7 full-time hospitalists, not including nocturnists and contract physicians. The VHSO does not have an infectious disease physician on staff.
The antimicrobial stewardship committee consists of 3 clinical pharmacists, a pulmonologist, a pathologist, and 2 infection-control nurses. There is 1 full-time equivalent allotted for inpatient clinical pharmacy activities in the acute care areas, including enforcement of all antimicrobial stewardship policies, which are conducted by a single pharmacist.
Methods
This was a retrospective chart review of two 12-month periods using a before and after study design. Medical records were reviewed during October 2012 through September 2013 (before the stewardship implementation) and December 2014 through November 2015 (after implementation). Inclusion criteria consisted of a primary discharge diagnosis of pneumonia as documented by the provider (or secondary diagnosis if sepsis was primary), hospitalization for at least 48 hours, administration of antibiotics for a minimum of 24 hours, and survival to discharge.
Exclusion criteria consisted of direct transfer from another facility, inappropriate empiric therapy as evidenced by culture data (isolated pathogens not covered by prescribed antibiotics), pneumonia that developed 48 hours after admission, extrapulmonary sources of infection, hospitalization > 14 days, discharge without a known duration of outpatient antibiotics, discharge for pneumonia within 28 days prior to admission, documented infection caused by Pseudomonas aeruginosa or other nonlactose fermenting Gram-negative rod, and complicated pneumonias defined as lung abscess, empyema, or severe immunosuppression (eg, cancer with chemotherapy within the previous 30 days, transplant recipients, HIV infection, acquired or congenital immunodeficiency, or absolute neutrophil count 1,500 cell/mm3 within past 28 days).
Patients were designated with health care-associated pneumonia (HCAP) if they were hospitalized ≥ 2 days or resided in a skilled nursing or extended-care facility within the previous 90 days; on chronic dialysis; or had wound care, tracheostomy care, or ventilator care from a health care professional within the previous 28 days. Criteria for clinical stability were defined as ≤ 100.4º F temperature, ≤ 100 beats/min heart rate, ≤ 24 breaths/min respiratory rate, ≥ 90 mm Hg systolic blood pressure, ≥ 90% or PaO2 ≥ 60 mm Hg oxygen saturation on room air (or baseline oxygen requirements), and return to baseline mental status. To compare groups, researchers tabulated the pneumonia severity index on hospital day 1.
The intervention consisted of a 3-part process. First, hospitalists were educated on VHSO’s baseline treatment duration data, and these were compared with current IDSA recommendations. The education was followed by an open-discussion component to solicit feedback from providers on perceived barriers to following guidelines. Provider feedback was used to tailor an antimicrobial stewardship intervention to address perceived barriers to optimal antibiotic treatment duration.
After the education component, prospective intervention and feedback were provided for hospitalized patients by a single clinical pharmacist. This pharmacist interacted verbally and in writing with the patients’ providers, discussing antimicrobial appropriateness, de-escalation, duration of therapy, and intravenous to oral switching. Finally, a stewardship note for the Computerized Patient Record System (CPRS) was generated and included a template with reminders of clinical stability, duration of current therapy, and a request to discontinue therapy if the patient met criteria. For patients who remained hospitalized, this note was entered into CPRS on or about day 7 of antibiotic therapy; this required an electronic signature from the provider.
The VHSO Pharmacy and Therapeutics Committee approved both the provider education and the stewardship note in November 2014, and implementation of the stewardship intervention occurred immediately afterward. The pharmacy staff also was educated on the VHSO baseline data and stewardship efforts.
The primary outcome of the study was the change in days of total antibiotic treatment. Secondary outcomes included days of intravenous antibiotic therapy, days of inpatient oral therapy, mean length of stay (LOS), and number of outpatient antibiotic days once discharged. Incidence of CDI and 28-day readmissions were also evaluated. The VHSO Institutional Review Board approved these methods and the procedures that followed were in accord with the ethical standards of the VHSO Committee on Human Experimentation.
Statistical Analysis
All continuous variables are reported as mean ± standard deviation. Data analysis for significance was performed using a Student t test for continuous variables and a χ2 test (or Fisher exact test) for categorical variables in R Foundation for Statistical Computing version 3.1.0. All samples were 2-tailed. A P value < .05 was considered statistically significant. Using the smaller of the 2 study populations, the investigators calculated that the given sample size of 88 in each group would provide 99% power to detect a 2-day difference in the primary endpoint at a 2-sided significance level of 5%.
Results
During the baseline assessment (group 1), 192 cases were reviewed with 103 meeting the inclusion criteria. Group 1 consisted of 85 cases of CAP and 18 cases of HCAP (mean age, 70.7 years). During the follow-up assessment (group 2), 168 cases were reviewed with 88 meeting the inclusion criteria. Group 2 consisted of 68 cases of CAP and 20 cases of HCAP (mean age, 70.8 years).
There was no difference in inpatient mortality rates between groups (3.1% vs 3.0%, P = .99). This mortality rate is consistent with published reports.23 Empiric antibiotic selection was appropriate because there were no exclusions for drug/pathogen mismatch. Pneumonia severity was similar in both groups (Table).
The total duration of antibiotic treatment decreased significantly for CAP and HCAP (Figure). The observed median treatment days for groups 1 and 2 were 11 days and 8 days, respectively. Outpatient antibiotic days also decreased. Mean LOS was shorter in the follow-up group (4.9 ± 2.6 days vs 4.0 ± 2.6 days, P = .02). Length of IV antibiotic duration decreased. Oral antibiotic days while inpatient were not statistically different (1.5 ± 1.8 days vs 1.1 ± 1.5 days, P = .15). During the follow-up period, 26 stewardship notes were entered into CPRS; antibiotics were stopped in 65% of cases.
There were no recorded cases of CDI in either group. There were eleven 28-day readmissions in group 1, only 3 of which were due to infectious causes. One patient had a primary diagnosis of necrotizing pneumonia, 1 had Pseudomonas pneumonia, and 1 patient had a new lung mass and was diagnosed with postobstructive pneumonia. Of eight 28-day readmissions in group 2, only 2 resulted from infectious causes. One readmission primary diagnosis was sinusitis and 1 was recurrent pneumonia (of note, this patient received a 10-day treatment course for pneumonia on initial admission). Two patients died within 28 days of discharge in each group.
Discussion
Other multifaceted single-center interventions have been shown to be effective in large, teaching hospitals,24,25 and it has been suggested that smaller, rural hospitals may be underserved in antimicrobial stewardship activities.26,27 In the global struggle with antimicrobial resistance, McGregor and colleagues highlighted the importance of evaluating successful stewardship methods in an array of clinical settings to help tailor an approach for a specific type of facility.28 To the authors knowledge, this is the first publication showing efficacy of such antimicrobial stewardship interventions specific to pneumonia therapy in a small, primary facility.
The intervention methods used at VHSO are supported by recent IDSA and Society for Healthcare Epidemiology of America guidelines for effective stewardship implementation.29 Prospective audit and feedback is considered a core recommendation, whereas didactic education is recommended only in conjunction with other stewardship activities. Additionally, the guidelines recommend evaluating specific infectious disease syndromes, in this case uncomplicated pneumonia, to focus on specific treatment guidelines. Last, the results of the 3-part intervention can be used to aid in demonstrating facility improvement and encourage continued success.
Of note, VHSO has had established inpatient and outpatient clinical pharmacy roles for several years. Stewardship interventions already in place included an intravenous-to-oral antibiotic switch policy, automatic antibiotic stop dates, as well as pharmacist-driven vancomycin and aminoglycoside dosing. Prior to this multifaceted intervention specific to pneumonia duration, prospective audit and feedback interventions (verbal and written) also were common. The number of interventions specific to this study outside of the stewardship note was not recorded. Using rapid diagnostic testing and biomarkers to aid in stewardship activities at VHSO have been considered, but these tools are not available due to a lab personnel shortage.
Soliciting feedback from providers on their preferred stewardship strategy and perceived barriers was a key component of the educational intervention. Of equal importance was presenting providers with their baseline prescribing data to provide objective evidence of a problem. While all were familiar with existing treatment guidelines, some feedback indicated that it can be difficult to determine accurate antibiotic duration in CPRS. Prescribers reported that identifying antibiotic duration was especially challenging when antibiotics as well as providers change during an admission. Also frequently overlooked were antibiotics given in the emergency department. This could be a key area for clinical pharmacists’ intervention given their familiarity with the CPRS medication sections.
Charani and colleagues suggest that recognizing barriers to implementing best practices and adapting to the local facility culture is paramount for changing prescribing behaviors and developing a successful stewardship intervention.30 At VHSO, the providers were presented with multiple stewardship options but agreed to the new note and template. This process gave providers a voice in selecting their own stewardship intervention. In a culture with no infectious disease physician to champion initiatives, the investigators felt that provider involvement in the intervention selection was unique and may have encouraged provider concurrence.
Although not directly targeted by the intervention strategies, average LOS was shorter in the follow-up group. According to investigators, frequent reminders of clinical stability in the stewardship notes may have influenced this. Even though the note was used only in patients who remained hospitalized for their entire treatment course, investigators felt that it still served as a reminder for prescribing habits as they were also able to show a decrease in outpatient prescription duration.
Limitations
Potential weaknesses of the study include changes in providers. During the transition between group 1 and group 2, 2 hospitalists left and 2 new hospitalists arrived. Given the small size of the staff, this could significantly impact prescribing trends. Another potential weakness is the high exclusion rate, although these rates were similar in both groups (46% group 1, 47% group 2). Furthermore, similar exclusion rates have been reported elsewhere.24,25,31 The most common reasons for exclusion were complicated pneumonias (36%) and immunocompromised patients (18%). These patient populations were not evaluated in the current study, and optimal treatment durations are unknown. Hospital-acquired and ventilator-associated pneumonias also were excluded. Therefore, limitations in applicability of the results should be noted.
The authors acknowledge that, prior to this publication, the IDSA guidelines have removed the designation of HCAP as a separate clinical entity.4 However, this should not affect the significance of the intervention for treatment duration.
The study facility experienced a hiring freeze resulting in a 9.3% decrease in overall admissions from fiscal year 2013 to fiscal year 2015. This is likely why there were fewer admissions for pneumonia in group 2. Regardless, power analysis revealed the study was of adequate sample size to detect its primary outcome. It is possible that patients in either group could have sought health care at other facilities, making the CDI and readmission endpoints less inclusive.
The study was not of a scale to detect changes in antimicrobial resistance pressure or clinical outcomes. Cost savings were not analyzed. However, this study adds to the growing body of evidence that a structured intervention can result in positive outcomes at the facility level. This study shows that interventions targeting pneumonia treatment duration could feasibly be added to the menu of stewardship options available to smaller facilities.
Like other stewardship studies in the literature, the follow-up treatment duration, while improved, still exceeded those recommended in the IDSA guidelines. The investigators noted that not all providers were equal regarding change in prescribing habits, perhaps making the average duration longer. Additionally, the request to discontinue antibiotic therapy through the stewardship note could have been entered earlier (eg, as early as day 5 of therapy) to target the shortest effective date as recommended in the recent stewardship guidelines.29 Future steps include continued feedback to providers on their progress in this area and encouragement to document day of antibiotic treatment in their daily progress notes.
Conclusion
This study showed a significant decrease in antibiotic duration for the treatment of uncomplicated pneumonia using a 3-part pharmacy intervention in a primary hospital setting. The investigators feel that each arm of the strategy was equally important and fewer interventions were not likely to be as effective.32 Although data collection for baseline prescribing and follow-up on outcomes may be a time-consuming task, it can be a valuable component of successful stewardship interventions.
1. Li JZ, Winston LG, Moore DH, Bent S. Efficacy of short-course antibiotic regimens for community-acquired pneumonia: a meta-analysis. Am J Med. 2007;120(9):783-790.
2. Dimopoulos G, Matthaiou DK, Karageorgopoulos DE, Grammatikos AP, Athanassa Z, Falagas ME. Short- versus long-course antibacterial therapy of community-acquired pneumonia: a meta-analysis. Drugs. 2008;68(13):1841-1854.
3. Mandell LA, Wunderink RG, Anzueto A, et al; Infectious Diseases Society of America; American Thoracic Society. Infectious Diseases Society of America/American Thoracic Society consensus guidelines on the management of community-acquired pneumonia in adults. Clin Infect Dis. 2007;44(suppl 2):S27-S72.
4. Kalil AC, Metersky ML, Klompas M, et al. Management of adults with hospital-acquired and ventilator associated pneumonia: 2016 clinical practice guidelines by the Infectious Diseases Society of America and the American Thoracic Society. Clin Infect Dis. 2016;63(5):e61-e111.
5. Jenkins TC, Stella SA, Cervantes L, et al. Targets for antibiotic and healthcare resource stewardship in inpatient community-acquired pneumonia: a comparison of management practices with National Guideline Recommendations. Infection. 2013; 41(1):135-144.
6. Shlaes DM, Gerding DN, John JF Jr, et al. Society for Healthcare Epidemiology of America, and Infectious Diseases Society of America Joint Committee on the Prevention of Antimicrobial Resistance: guidelines for the prevention of antimicrobial resistance in hospitals. Clin Infect Dis. 1997;25(3):584-599.
7. Cohen SH, Gerding DN, Johnson S, et al; Society for Healthcare Epidemiology of America; Infectious Diseases Society of America. Clinical practice guidelines for Clostridium difficile infection in adults: 2010 update by the Society for Healthcare Epidemiology of America (SHEA) and the Infectious Diseases Society of America (IDSA). Infect Control Hosp Epidemiol. 2010;31(5):431-455.
8. Brown E, Talbot GH, Axelrod P, Provencher M, Hoegg C. Risk factors for Clostridium-difficile toxin-associated diarrhea. Infect Control Hosp Epidemiol. 1990;11(6):283-290.
9. McFarland LV, Surawicz CM, Stamm WE. Risk factors for Clostridium-difficile carriage and C. difficile-associated diarrhea in a cohort of hospitalized patients. J Infect Dis. 1990;162(3):678-684.
10. Shehab N, Patel PR, Srinivasan A, Budnitz DS. Emergency department visits for antibiotic-associated adverse events. Clin Infect Dis. 2008;47(6):735-743.
11. Dellit TH, Owens RC, McGowan JE Jr, et al; Infectious Diseases Society of America; Society for Healthcare Epidemiology of America. Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America Guidelines for developing an institutional program to enhance antimicrobial stewardship. Clin Infect Dis. 2007;44(2):159-177.
12. Fridkin S, Baggs J, Fagan R, et al; Centers for Disease Control and Prevention (CDC). Vital signs: improving antibiotic use among hospitalized patients. MMWR Morb Mortal Wkly Rep. 2014;63(9):194-200.
13. Nussenblatt V, Avdic E, Cosgrove S. What is the role of antimicrobial stewardship in improving outcomes of patients with CAP? Infect Dis Clin North Am. 2013;27(1):211-228.
14. Septimus EJ, Owens RC Jr. Need and potential of antimicrobial stewardship in community hospitals. Clin Infect Dis. 2011;53(suppl 1):S8-S14.
15. Hensher M, Price M, Adomakoh S. Referral hospitals. In Jamison DT, Breman JG, Measham AR, eds, et al. Disease Control Priorities in Developing Countries. New York, NY: Oxford University Press; 2006:1230.
16. Mulligan J, Fox-Rushby JA, Adam T, Johns B, Mills A. Unit costs of health care inputs in low and middle income regions. 2003. Working Paper 9, Disease Control Priorities Project. Published September 2003. Revised June 2005.
17. Ohl CA, Dodds Ashley ES. Antimicrobial stewardship programs in community hospitals: the evidence base and case studies. Clin Infect Dis 2011;53(suppl 1):S23-S28.
18. Trevidi KK, Kuper K. Hospital antimicrobial stewardship in the nonuniversity setting. Infect Dis Clin North Am. 2014;28(2):281-289.
19. Yam P, Fales D, Jemison J, Gillum M, Bernstein M. Implementation of an antimicrobial stewardship program in a rural hospital. Am J Health Syst Pharm. 2012;69(13);1142-1148.
20. LaRocco A Jr. Concurrent antibiotic review programs—a role for infectious diseases specialists at small community hospitals. Clin Infect Dis. 2003;37(5):742-743.
21. Bartlett JM, Siola PL. Implementation and first-year results of an antimicrobial stewardship program at a community hospital. Am J Health Syst Pharm. 2014;71(11):943-949.
22. Storey DF, Pate PG, Nguyen AT, Chang F. Implementation of an antimicrobial stewardship program on the medical-surgical service of a 100-bed community hospital. Antimicrob Resist Infect Control. 2012;1(1):32.
23. Fine MJ, Smith MA, Carson CA, et al. Prognosis and outcomes of patients with community-acquired pneumonia. A meta-analysis. JAMA. 1996;275(2):134-141.
24. Advic E, Cushinotto LA, Hughes AH, et al. Impact of an antimicrobial stewardship intervention on shortening the duration of therapy for community-acquired pneumonia. Clin Infect Dis. 2012;54(11):1581-1587.
25. Carratallà J, Garcia-Vidal C, Ortega L, et al. Effect of a 3-step critical pathway to reduce duration of intravenous antibiotic therapy and length of stay in community-acquired pneumonia: a randomized controlled trial. Arch Intern Med. 2012;172(12):922-928.
26. Stevenson KB, Samore M, Barbera J, et al. Pharmacist involvement in antimicrobial use at rural community hospitals in four Western states. Am J Health Syst Pharm. 2004;61(8):787-792.
27. Reese SM, Gilmartin H, Rich KL, Price CS. Infection prevention needs assessment in Colorado hospitals: rural and urban settings. Am J Infect Control. 2014;42(6):597-601.
28. McGregor JC, Furuno JP. Optimizing research methods used for the evaluation of antimicrobial stewardship programs. Clin Infect Dis. 2014;59(suppl 3):S185-S192.
29. Barlam TF, Cosgrove SE, Abbo LM, et al. Implementing an antibiotic stewardship program: Guidelines by the Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America. Clin Infect Dis. 2016;62(10):e51-e77.
30. Charani E, Castro-Sánchez E, Holmes A. The role of behavior change in antimicrobial stewardship. Infect Dis Clin N Am. 2014;28(2):169-175.
31. Attridge RT, Frei CR, Restrepo MI, et al. Guideline-concordant therapy and outcomes in healthcare-associated pneumonia. Eur Respir J. 2011;38(4):878-887.
32. MacDougal C, Polk RE. Antimicrobial stewardship programs in health care systems. Clin Microbiol Rev. 2005;18(4):638-656.
The safety and the efficacy of shorter durations of antibiotic therapy for uncomplicated pneumonia have been clearly established in the past decade.1,2 Guidelines from the Infectious Diseases Society of America (IDSA) and the American Thoracic Society have been available since 2007. These expert consensus statements recommend that uncomplicated community-acquired pneumonia (CAP) should be treated for 5 to 7 days, as long as the patient exhibits signs and symptoms of clinical stability.3 Similarly, recently updated guidelines for hospital-acquired and ventilator-associated pneumonias call for short-course therapy.4 Despite this guidance, pneumonia treatment duration is often discordant.5 Unnecessary antimicrobial use is associated with greater selection pressure on pathogens, increased risk of adverse events (AEs), and elevated treatment costs.6 The growing burden of antibiotic resistance coupled with limited availability of new antibiotics requires judicious use of these agents.
The IDSA guidelines for Clostridium difficile infection (CDI) note that exposure to antimicrobial agents is the most important modifiable risk factor for the development of CDI.7 Longer durations of antibiotics increase the risk of CDI compared with shorter durations.8,9 Antibiotics are a frequent cause of drug-associated AEs and likely are underestimated.10 To decrease the unwanted effects of excessive therapy, IDSA and CDC suggest that antimicrobial stewardship interventions should be implemented.11-13
Antimicrobial stewardship efforts in small community hospitals (also known as district, rural, general, and primary hospitals) are varied and can be challenging due to limited staff and resources.14,15 The World Health Organization defines a primary care facility as having few specialties, mainly internal medicine and general surgery with limited laboratory services for general (but not specialized) pathologic analysis, and bed size ranging from 30 to 200 beds.16 Although guidance is available for effective intervention strategies in smaller hospitals, there are limited data in the literature regarding successful outcomes.17-22
The purpose of this study was to establish the need and evaluate the impact of a pharmacy-initiated 3-part intervention targeting treatment duration in patients hospitalized with uncomplicated pneumonia in a primary hospital setting. The Veterans Health Care System of the Ozarks (VHSO) in Fayetteville, Arkansas, has 50 acute care beds, including 7 intensive care unit beds and excluding 15 mental health beds. The pharmacy is staffed 24 hours a day. Acute-care providers consist of 7 full-time hospitalists, not including nocturnists and contract physicians. The VHSO does not have an infectious disease physician on staff.
The antimicrobial stewardship committee consists of 3 clinical pharmacists, a pulmonologist, a pathologist, and 2 infection-control nurses. There is 1 full-time equivalent allotted for inpatient clinical pharmacy activities in the acute care areas, including enforcement of all antimicrobial stewardship policies, which are conducted by a single pharmacist.
Methods
This was a retrospective chart review of two 12-month periods using a before and after study design. Medical records were reviewed during October 2012 through September 2013 (before the stewardship implementation) and December 2014 through November 2015 (after implementation). Inclusion criteria consisted of a primary discharge diagnosis of pneumonia as documented by the provider (or secondary diagnosis if sepsis was primary), hospitalization for at least 48 hours, administration of antibiotics for a minimum of 24 hours, and survival to discharge.
Exclusion criteria consisted of direct transfer from another facility, inappropriate empiric therapy as evidenced by culture data (isolated pathogens not covered by prescribed antibiotics), pneumonia that developed 48 hours after admission, extrapulmonary sources of infection, hospitalization > 14 days, discharge without a known duration of outpatient antibiotics, discharge for pneumonia within 28 days prior to admission, documented infection caused by Pseudomonas aeruginosa or other nonlactose fermenting Gram-negative rod, and complicated pneumonias defined as lung abscess, empyema, or severe immunosuppression (eg, cancer with chemotherapy within the previous 30 days, transplant recipients, HIV infection, acquired or congenital immunodeficiency, or absolute neutrophil count 1,500 cell/mm3 within past 28 days).
Patients were designated with health care-associated pneumonia (HCAP) if they were hospitalized ≥ 2 days or resided in a skilled nursing or extended-care facility within the previous 90 days; on chronic dialysis; or had wound care, tracheostomy care, or ventilator care from a health care professional within the previous 28 days. Criteria for clinical stability were defined as ≤ 100.4º F temperature, ≤ 100 beats/min heart rate, ≤ 24 breaths/min respiratory rate, ≥ 90 mm Hg systolic blood pressure, ≥ 90% or PaO2 ≥ 60 mm Hg oxygen saturation on room air (or baseline oxygen requirements), and return to baseline mental status. To compare groups, researchers tabulated the pneumonia severity index on hospital day 1.
The intervention consisted of a 3-part process. First, hospitalists were educated on VHSO’s baseline treatment duration data, and these were compared with current IDSA recommendations. The education was followed by an open-discussion component to solicit feedback from providers on perceived barriers to following guidelines. Provider feedback was used to tailor an antimicrobial stewardship intervention to address perceived barriers to optimal antibiotic treatment duration.
After the education component, prospective intervention and feedback were provided for hospitalized patients by a single clinical pharmacist. This pharmacist interacted verbally and in writing with the patients’ providers, discussing antimicrobial appropriateness, de-escalation, duration of therapy, and intravenous to oral switching. Finally, a stewardship note for the Computerized Patient Record System (CPRS) was generated and included a template with reminders of clinical stability, duration of current therapy, and a request to discontinue therapy if the patient met criteria. For patients who remained hospitalized, this note was entered into CPRS on or about day 7 of antibiotic therapy; this required an electronic signature from the provider.
The VHSO Pharmacy and Therapeutics Committee approved both the provider education and the stewardship note in November 2014, and implementation of the stewardship intervention occurred immediately afterward. The pharmacy staff also was educated on the VHSO baseline data and stewardship efforts.
The primary outcome of the study was the change in days of total antibiotic treatment. Secondary outcomes included days of intravenous antibiotic therapy, days of inpatient oral therapy, mean length of stay (LOS), and number of outpatient antibiotic days once discharged. Incidence of CDI and 28-day readmissions were also evaluated. The VHSO Institutional Review Board approved these methods and the procedures that followed were in accord with the ethical standards of the VHSO Committee on Human Experimentation.
Statistical Analysis
All continuous variables are reported as mean ± standard deviation. Data analysis for significance was performed using a Student t test for continuous variables and a χ2 test (or Fisher exact test) for categorical variables in R Foundation for Statistical Computing version 3.1.0. All samples were 2-tailed. A P value < .05 was considered statistically significant. Using the smaller of the 2 study populations, the investigators calculated that the given sample size of 88 in each group would provide 99% power to detect a 2-day difference in the primary endpoint at a 2-sided significance level of 5%.
Results
During the baseline assessment (group 1), 192 cases were reviewed with 103 meeting the inclusion criteria. Group 1 consisted of 85 cases of CAP and 18 cases of HCAP (mean age, 70.7 years). During the follow-up assessment (group 2), 168 cases were reviewed with 88 meeting the inclusion criteria. Group 2 consisted of 68 cases of CAP and 20 cases of HCAP (mean age, 70.8 years).
There was no difference in inpatient mortality rates between groups (3.1% vs 3.0%, P = .99). This mortality rate is consistent with published reports.23 Empiric antibiotic selection was appropriate because there were no exclusions for drug/pathogen mismatch. Pneumonia severity was similar in both groups (Table).
The total duration of antibiotic treatment decreased significantly for CAP and HCAP (Figure). The observed median treatment days for groups 1 and 2 were 11 days and 8 days, respectively. Outpatient antibiotic days also decreased. Mean LOS was shorter in the follow-up group (4.9 ± 2.6 days vs 4.0 ± 2.6 days, P = .02). Length of IV antibiotic duration decreased. Oral antibiotic days while inpatient were not statistically different (1.5 ± 1.8 days vs 1.1 ± 1.5 days, P = .15). During the follow-up period, 26 stewardship notes were entered into CPRS; antibiotics were stopped in 65% of cases.
There were no recorded cases of CDI in either group. There were eleven 28-day readmissions in group 1, only 3 of which were due to infectious causes. One patient had a primary diagnosis of necrotizing pneumonia, 1 had Pseudomonas pneumonia, and 1 patient had a new lung mass and was diagnosed with postobstructive pneumonia. Of eight 28-day readmissions in group 2, only 2 resulted from infectious causes. One readmission primary diagnosis was sinusitis and 1 was recurrent pneumonia (of note, this patient received a 10-day treatment course for pneumonia on initial admission). Two patients died within 28 days of discharge in each group.
Discussion
Other multifaceted single-center interventions have been shown to be effective in large, teaching hospitals,24,25 and it has been suggested that smaller, rural hospitals may be underserved in antimicrobial stewardship activities.26,27 In the global struggle with antimicrobial resistance, McGregor and colleagues highlighted the importance of evaluating successful stewardship methods in an array of clinical settings to help tailor an approach for a specific type of facility.28 To the authors knowledge, this is the first publication showing efficacy of such antimicrobial stewardship interventions specific to pneumonia therapy in a small, primary facility.
The intervention methods used at VHSO are supported by recent IDSA and Society for Healthcare Epidemiology of America guidelines for effective stewardship implementation.29 Prospective audit and feedback is considered a core recommendation, whereas didactic education is recommended only in conjunction with other stewardship activities. Additionally, the guidelines recommend evaluating specific infectious disease syndromes, in this case uncomplicated pneumonia, to focus on specific treatment guidelines. Last, the results of the 3-part intervention can be used to aid in demonstrating facility improvement and encourage continued success.
Of note, VHSO has had established inpatient and outpatient clinical pharmacy roles for several years. Stewardship interventions already in place included an intravenous-to-oral antibiotic switch policy, automatic antibiotic stop dates, as well as pharmacist-driven vancomycin and aminoglycoside dosing. Prior to this multifaceted intervention specific to pneumonia duration, prospective audit and feedback interventions (verbal and written) also were common. The number of interventions specific to this study outside of the stewardship note was not recorded. Using rapid diagnostic testing and biomarkers to aid in stewardship activities at VHSO have been considered, but these tools are not available due to a lab personnel shortage.
Soliciting feedback from providers on their preferred stewardship strategy and perceived barriers was a key component of the educational intervention. Of equal importance was presenting providers with their baseline prescribing data to provide objective evidence of a problem. While all were familiar with existing treatment guidelines, some feedback indicated that it can be difficult to determine accurate antibiotic duration in CPRS. Prescribers reported that identifying antibiotic duration was especially challenging when antibiotics as well as providers change during an admission. Also frequently overlooked were antibiotics given in the emergency department. This could be a key area for clinical pharmacists’ intervention given their familiarity with the CPRS medication sections.
Charani and colleagues suggest that recognizing barriers to implementing best practices and adapting to the local facility culture is paramount for changing prescribing behaviors and developing a successful stewardship intervention.30 At VHSO, the providers were presented with multiple stewardship options but agreed to the new note and template. This process gave providers a voice in selecting their own stewardship intervention. In a culture with no infectious disease physician to champion initiatives, the investigators felt that provider involvement in the intervention selection was unique and may have encouraged provider concurrence.
Although not directly targeted by the intervention strategies, average LOS was shorter in the follow-up group. According to investigators, frequent reminders of clinical stability in the stewardship notes may have influenced this. Even though the note was used only in patients who remained hospitalized for their entire treatment course, investigators felt that it still served as a reminder for prescribing habits as they were also able to show a decrease in outpatient prescription duration.
Limitations
Potential weaknesses of the study include changes in providers. During the transition between group 1 and group 2, 2 hospitalists left and 2 new hospitalists arrived. Given the small size of the staff, this could significantly impact prescribing trends. Another potential weakness is the high exclusion rate, although these rates were similar in both groups (46% group 1, 47% group 2). Furthermore, similar exclusion rates have been reported elsewhere.24,25,31 The most common reasons for exclusion were complicated pneumonias (36%) and immunocompromised patients (18%). These patient populations were not evaluated in the current study, and optimal treatment durations are unknown. Hospital-acquired and ventilator-associated pneumonias also were excluded. Therefore, limitations in applicability of the results should be noted.
The authors acknowledge that, prior to this publication, the IDSA guidelines have removed the designation of HCAP as a separate clinical entity.4 However, this should not affect the significance of the intervention for treatment duration.
The study facility experienced a hiring freeze resulting in a 9.3% decrease in overall admissions from fiscal year 2013 to fiscal year 2015. This is likely why there were fewer admissions for pneumonia in group 2. Regardless, power analysis revealed the study was of adequate sample size to detect its primary outcome. It is possible that patients in either group could have sought health care at other facilities, making the CDI and readmission endpoints less inclusive.
The study was not of a scale to detect changes in antimicrobial resistance pressure or clinical outcomes. Cost savings were not analyzed. However, this study adds to the growing body of evidence that a structured intervention can result in positive outcomes at the facility level. This study shows that interventions targeting pneumonia treatment duration could feasibly be added to the menu of stewardship options available to smaller facilities.
Like other stewardship studies in the literature, the follow-up treatment duration, while improved, still exceeded those recommended in the IDSA guidelines. The investigators noted that not all providers were equal regarding change in prescribing habits, perhaps making the average duration longer. Additionally, the request to discontinue antibiotic therapy through the stewardship note could have been entered earlier (eg, as early as day 5 of therapy) to target the shortest effective date as recommended in the recent stewardship guidelines.29 Future steps include continued feedback to providers on their progress in this area and encouragement to document day of antibiotic treatment in their daily progress notes.
Conclusion
This study showed a significant decrease in antibiotic duration for the treatment of uncomplicated pneumonia using a 3-part pharmacy intervention in a primary hospital setting. The investigators feel that each arm of the strategy was equally important and fewer interventions were not likely to be as effective.32 Although data collection for baseline prescribing and follow-up on outcomes may be a time-consuming task, it can be a valuable component of successful stewardship interventions.
The safety and the efficacy of shorter durations of antibiotic therapy for uncomplicated pneumonia have been clearly established in the past decade.1,2 Guidelines from the Infectious Diseases Society of America (IDSA) and the American Thoracic Society have been available since 2007. These expert consensus statements recommend that uncomplicated community-acquired pneumonia (CAP) should be treated for 5 to 7 days, as long as the patient exhibits signs and symptoms of clinical stability.3 Similarly, recently updated guidelines for hospital-acquired and ventilator-associated pneumonias call for short-course therapy.4 Despite this guidance, pneumonia treatment duration is often discordant.5 Unnecessary antimicrobial use is associated with greater selection pressure on pathogens, increased risk of adverse events (AEs), and elevated treatment costs.6 The growing burden of antibiotic resistance coupled with limited availability of new antibiotics requires judicious use of these agents.
The IDSA guidelines for Clostridium difficile infection (CDI) note that exposure to antimicrobial agents is the most important modifiable risk factor for the development of CDI.7 Longer durations of antibiotics increase the risk of CDI compared with shorter durations.8,9 Antibiotics are a frequent cause of drug-associated AEs and likely are underestimated.10 To decrease the unwanted effects of excessive therapy, IDSA and CDC suggest that antimicrobial stewardship interventions should be implemented.11-13
Antimicrobial stewardship efforts in small community hospitals (also known as district, rural, general, and primary hospitals) are varied and can be challenging due to limited staff and resources.14,15 The World Health Organization defines a primary care facility as having few specialties, mainly internal medicine and general surgery with limited laboratory services for general (but not specialized) pathologic analysis, and bed size ranging from 30 to 200 beds.16 Although guidance is available for effective intervention strategies in smaller hospitals, there are limited data in the literature regarding successful outcomes.17-22
The purpose of this study was to establish the need and evaluate the impact of a pharmacy-initiated 3-part intervention targeting treatment duration in patients hospitalized with uncomplicated pneumonia in a primary hospital setting. The Veterans Health Care System of the Ozarks (VHSO) in Fayetteville, Arkansas, has 50 acute care beds, including 7 intensive care unit beds and excluding 15 mental health beds. The pharmacy is staffed 24 hours a day. Acute-care providers consist of 7 full-time hospitalists, not including nocturnists and contract physicians. The VHSO does not have an infectious disease physician on staff.
The antimicrobial stewardship committee consists of 3 clinical pharmacists, a pulmonologist, a pathologist, and 2 infection-control nurses. There is 1 full-time equivalent allotted for inpatient clinical pharmacy activities in the acute care areas, including enforcement of all antimicrobial stewardship policies, which are conducted by a single pharmacist.
Methods
This was a retrospective chart review of two 12-month periods using a before and after study design. Medical records were reviewed during October 2012 through September 2013 (before the stewardship implementation) and December 2014 through November 2015 (after implementation). Inclusion criteria consisted of a primary discharge diagnosis of pneumonia as documented by the provider (or secondary diagnosis if sepsis was primary), hospitalization for at least 48 hours, administration of antibiotics for a minimum of 24 hours, and survival to discharge.
Exclusion criteria consisted of direct transfer from another facility, inappropriate empiric therapy as evidenced by culture data (isolated pathogens not covered by prescribed antibiotics), pneumonia that developed 48 hours after admission, extrapulmonary sources of infection, hospitalization > 14 days, discharge without a known duration of outpatient antibiotics, discharge for pneumonia within 28 days prior to admission, documented infection caused by Pseudomonas aeruginosa or other nonlactose fermenting Gram-negative rod, and complicated pneumonias defined as lung abscess, empyema, or severe immunosuppression (eg, cancer with chemotherapy within the previous 30 days, transplant recipients, HIV infection, acquired or congenital immunodeficiency, or absolute neutrophil count 1,500 cell/mm3 within past 28 days).
Patients were designated with health care-associated pneumonia (HCAP) if they were hospitalized ≥ 2 days or resided in a skilled nursing or extended-care facility within the previous 90 days; on chronic dialysis; or had wound care, tracheostomy care, or ventilator care from a health care professional within the previous 28 days. Criteria for clinical stability were defined as ≤ 100.4º F temperature, ≤ 100 beats/min heart rate, ≤ 24 breaths/min respiratory rate, ≥ 90 mm Hg systolic blood pressure, ≥ 90% or PaO2 ≥ 60 mm Hg oxygen saturation on room air (or baseline oxygen requirements), and return to baseline mental status. To compare groups, researchers tabulated the pneumonia severity index on hospital day 1.
The intervention consisted of a 3-part process. First, hospitalists were educated on VHSO’s baseline treatment duration data, and these were compared with current IDSA recommendations. The education was followed by an open-discussion component to solicit feedback from providers on perceived barriers to following guidelines. Provider feedback was used to tailor an antimicrobial stewardship intervention to address perceived barriers to optimal antibiotic treatment duration.
After the education component, prospective intervention and feedback were provided for hospitalized patients by a single clinical pharmacist. This pharmacist interacted verbally and in writing with the patients’ providers, discussing antimicrobial appropriateness, de-escalation, duration of therapy, and intravenous to oral switching. Finally, a stewardship note for the Computerized Patient Record System (CPRS) was generated and included a template with reminders of clinical stability, duration of current therapy, and a request to discontinue therapy if the patient met criteria. For patients who remained hospitalized, this note was entered into CPRS on or about day 7 of antibiotic therapy; this required an electronic signature from the provider.
The VHSO Pharmacy and Therapeutics Committee approved both the provider education and the stewardship note in November 2014, and implementation of the stewardship intervention occurred immediately afterward. The pharmacy staff also was educated on the VHSO baseline data and stewardship efforts.
The primary outcome of the study was the change in days of total antibiotic treatment. Secondary outcomes included days of intravenous antibiotic therapy, days of inpatient oral therapy, mean length of stay (LOS), and number of outpatient antibiotic days once discharged. Incidence of CDI and 28-day readmissions were also evaluated. The VHSO Institutional Review Board approved these methods and the procedures that followed were in accord with the ethical standards of the VHSO Committee on Human Experimentation.
Statistical Analysis
All continuous variables are reported as mean ± standard deviation. Data analysis for significance was performed using a Student t test for continuous variables and a χ2 test (or Fisher exact test) for categorical variables in R Foundation for Statistical Computing version 3.1.0. All samples were 2-tailed. A P value < .05 was considered statistically significant. Using the smaller of the 2 study populations, the investigators calculated that the given sample size of 88 in each group would provide 99% power to detect a 2-day difference in the primary endpoint at a 2-sided significance level of 5%.
Results
During the baseline assessment (group 1), 192 cases were reviewed with 103 meeting the inclusion criteria. Group 1 consisted of 85 cases of CAP and 18 cases of HCAP (mean age, 70.7 years). During the follow-up assessment (group 2), 168 cases were reviewed with 88 meeting the inclusion criteria. Group 2 consisted of 68 cases of CAP and 20 cases of HCAP (mean age, 70.8 years).
There was no difference in inpatient mortality rates between groups (3.1% vs 3.0%, P = .99). This mortality rate is consistent with published reports.23 Empiric antibiotic selection was appropriate because there were no exclusions for drug/pathogen mismatch. Pneumonia severity was similar in both groups (Table).
The total duration of antibiotic treatment decreased significantly for CAP and HCAP (Figure). The observed median treatment days for groups 1 and 2 were 11 days and 8 days, respectively. Outpatient antibiotic days also decreased. Mean LOS was shorter in the follow-up group (4.9 ± 2.6 days vs 4.0 ± 2.6 days, P = .02). Length of IV antibiotic duration decreased. Oral antibiotic days while inpatient were not statistically different (1.5 ± 1.8 days vs 1.1 ± 1.5 days, P = .15). During the follow-up period, 26 stewardship notes were entered into CPRS; antibiotics were stopped in 65% of cases.
There were no recorded cases of CDI in either group. There were eleven 28-day readmissions in group 1, only 3 of which were due to infectious causes. One patient had a primary diagnosis of necrotizing pneumonia, 1 had Pseudomonas pneumonia, and 1 patient had a new lung mass and was diagnosed with postobstructive pneumonia. Of eight 28-day readmissions in group 2, only 2 resulted from infectious causes. One readmission primary diagnosis was sinusitis and 1 was recurrent pneumonia (of note, this patient received a 10-day treatment course for pneumonia on initial admission). Two patients died within 28 days of discharge in each group.
Discussion
Other multifaceted single-center interventions have been shown to be effective in large, teaching hospitals,24,25 and it has been suggested that smaller, rural hospitals may be underserved in antimicrobial stewardship activities.26,27 In the global struggle with antimicrobial resistance, McGregor and colleagues highlighted the importance of evaluating successful stewardship methods in an array of clinical settings to help tailor an approach for a specific type of facility.28 To the authors knowledge, this is the first publication showing efficacy of such antimicrobial stewardship interventions specific to pneumonia therapy in a small, primary facility.
The intervention methods used at VHSO are supported by recent IDSA and Society for Healthcare Epidemiology of America guidelines for effective stewardship implementation.29 Prospective audit and feedback is considered a core recommendation, whereas didactic education is recommended only in conjunction with other stewardship activities. Additionally, the guidelines recommend evaluating specific infectious disease syndromes, in this case uncomplicated pneumonia, to focus on specific treatment guidelines. Last, the results of the 3-part intervention can be used to aid in demonstrating facility improvement and encourage continued success.
Of note, VHSO has had established inpatient and outpatient clinical pharmacy roles for several years. Stewardship interventions already in place included an intravenous-to-oral antibiotic switch policy, automatic antibiotic stop dates, as well as pharmacist-driven vancomycin and aminoglycoside dosing. Prior to this multifaceted intervention specific to pneumonia duration, prospective audit and feedback interventions (verbal and written) also were common. The number of interventions specific to this study outside of the stewardship note was not recorded. Using rapid diagnostic testing and biomarkers to aid in stewardship activities at VHSO have been considered, but these tools are not available due to a lab personnel shortage.
Soliciting feedback from providers on their preferred stewardship strategy and perceived barriers was a key component of the educational intervention. Of equal importance was presenting providers with their baseline prescribing data to provide objective evidence of a problem. While all were familiar with existing treatment guidelines, some feedback indicated that it can be difficult to determine accurate antibiotic duration in CPRS. Prescribers reported that identifying antibiotic duration was especially challenging when antibiotics as well as providers change during an admission. Also frequently overlooked were antibiotics given in the emergency department. This could be a key area for clinical pharmacists’ intervention given their familiarity with the CPRS medication sections.
Charani and colleagues suggest that recognizing barriers to implementing best practices and adapting to the local facility culture is paramount for changing prescribing behaviors and developing a successful stewardship intervention.30 At VHSO, the providers were presented with multiple stewardship options but agreed to the new note and template. This process gave providers a voice in selecting their own stewardship intervention. In a culture with no infectious disease physician to champion initiatives, the investigators felt that provider involvement in the intervention selection was unique and may have encouraged provider concurrence.
Although not directly targeted by the intervention strategies, average LOS was shorter in the follow-up group. According to investigators, frequent reminders of clinical stability in the stewardship notes may have influenced this. Even though the note was used only in patients who remained hospitalized for their entire treatment course, investigators felt that it still served as a reminder for prescribing habits as they were also able to show a decrease in outpatient prescription duration.
Limitations
Potential weaknesses of the study include changes in providers. During the transition between group 1 and group 2, 2 hospitalists left and 2 new hospitalists arrived. Given the small size of the staff, this could significantly impact prescribing trends. Another potential weakness is the high exclusion rate, although these rates were similar in both groups (46% group 1, 47% group 2). Furthermore, similar exclusion rates have been reported elsewhere.24,25,31 The most common reasons for exclusion were complicated pneumonias (36%) and immunocompromised patients (18%). These patient populations were not evaluated in the current study, and optimal treatment durations are unknown. Hospital-acquired and ventilator-associated pneumonias also were excluded. Therefore, limitations in applicability of the results should be noted.
The authors acknowledge that, prior to this publication, the IDSA guidelines have removed the designation of HCAP as a separate clinical entity.4 However, this should not affect the significance of the intervention for treatment duration.
The study facility experienced a hiring freeze resulting in a 9.3% decrease in overall admissions from fiscal year 2013 to fiscal year 2015. This is likely why there were fewer admissions for pneumonia in group 2. Regardless, power analysis revealed the study was of adequate sample size to detect its primary outcome. It is possible that patients in either group could have sought health care at other facilities, making the CDI and readmission endpoints less inclusive.
The study was not of a scale to detect changes in antimicrobial resistance pressure or clinical outcomes. Cost savings were not analyzed. However, this study adds to the growing body of evidence that a structured intervention can result in positive outcomes at the facility level. This study shows that interventions targeting pneumonia treatment duration could feasibly be added to the menu of stewardship options available to smaller facilities.
Like other stewardship studies in the literature, the follow-up treatment duration, while improved, still exceeded those recommended in the IDSA guidelines. The investigators noted that not all providers were equal regarding change in prescribing habits, perhaps making the average duration longer. Additionally, the request to discontinue antibiotic therapy through the stewardship note could have been entered earlier (eg, as early as day 5 of therapy) to target the shortest effective date as recommended in the recent stewardship guidelines.29 Future steps include continued feedback to providers on their progress in this area and encouragement to document day of antibiotic treatment in their daily progress notes.
Conclusion
This study showed a significant decrease in antibiotic duration for the treatment of uncomplicated pneumonia using a 3-part pharmacy intervention in a primary hospital setting. The investigators feel that each arm of the strategy was equally important and fewer interventions were not likely to be as effective.32 Although data collection for baseline prescribing and follow-up on outcomes may be a time-consuming task, it can be a valuable component of successful stewardship interventions.
1. Li JZ, Winston LG, Moore DH, Bent S. Efficacy of short-course antibiotic regimens for community-acquired pneumonia: a meta-analysis. Am J Med. 2007;120(9):783-790.
2. Dimopoulos G, Matthaiou DK, Karageorgopoulos DE, Grammatikos AP, Athanassa Z, Falagas ME. Short- versus long-course antibacterial therapy of community-acquired pneumonia: a meta-analysis. Drugs. 2008;68(13):1841-1854.
3. Mandell LA, Wunderink RG, Anzueto A, et al; Infectious Diseases Society of America; American Thoracic Society. Infectious Diseases Society of America/American Thoracic Society consensus guidelines on the management of community-acquired pneumonia in adults. Clin Infect Dis. 2007;44(suppl 2):S27-S72.
4. Kalil AC, Metersky ML, Klompas M, et al. Management of adults with hospital-acquired and ventilator associated pneumonia: 2016 clinical practice guidelines by the Infectious Diseases Society of America and the American Thoracic Society. Clin Infect Dis. 2016;63(5):e61-e111.
5. Jenkins TC, Stella SA, Cervantes L, et al. Targets for antibiotic and healthcare resource stewardship in inpatient community-acquired pneumonia: a comparison of management practices with National Guideline Recommendations. Infection. 2013; 41(1):135-144.
6. Shlaes DM, Gerding DN, John JF Jr, et al. Society for Healthcare Epidemiology of America, and Infectious Diseases Society of America Joint Committee on the Prevention of Antimicrobial Resistance: guidelines for the prevention of antimicrobial resistance in hospitals. Clin Infect Dis. 1997;25(3):584-599.
7. Cohen SH, Gerding DN, Johnson S, et al; Society for Healthcare Epidemiology of America; Infectious Diseases Society of America. Clinical practice guidelines for Clostridium difficile infection in adults: 2010 update by the Society for Healthcare Epidemiology of America (SHEA) and the Infectious Diseases Society of America (IDSA). Infect Control Hosp Epidemiol. 2010;31(5):431-455.
8. Brown E, Talbot GH, Axelrod P, Provencher M, Hoegg C. Risk factors for Clostridium-difficile toxin-associated diarrhea. Infect Control Hosp Epidemiol. 1990;11(6):283-290.
9. McFarland LV, Surawicz CM, Stamm WE. Risk factors for Clostridium-difficile carriage and C. difficile-associated diarrhea in a cohort of hospitalized patients. J Infect Dis. 1990;162(3):678-684.
10. Shehab N, Patel PR, Srinivasan A, Budnitz DS. Emergency department visits for antibiotic-associated adverse events. Clin Infect Dis. 2008;47(6):735-743.
11. Dellit TH, Owens RC, McGowan JE Jr, et al; Infectious Diseases Society of America; Society for Healthcare Epidemiology of America. Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America Guidelines for developing an institutional program to enhance antimicrobial stewardship. Clin Infect Dis. 2007;44(2):159-177.
12. Fridkin S, Baggs J, Fagan R, et al; Centers for Disease Control and Prevention (CDC). Vital signs: improving antibiotic use among hospitalized patients. MMWR Morb Mortal Wkly Rep. 2014;63(9):194-200.
13. Nussenblatt V, Avdic E, Cosgrove S. What is the role of antimicrobial stewardship in improving outcomes of patients with CAP? Infect Dis Clin North Am. 2013;27(1):211-228.
14. Septimus EJ, Owens RC Jr. Need and potential of antimicrobial stewardship in community hospitals. Clin Infect Dis. 2011;53(suppl 1):S8-S14.
15. Hensher M, Price M, Adomakoh S. Referral hospitals. In Jamison DT, Breman JG, Measham AR, eds, et al. Disease Control Priorities in Developing Countries. New York, NY: Oxford University Press; 2006:1230.
16. Mulligan J, Fox-Rushby JA, Adam T, Johns B, Mills A. Unit costs of health care inputs in low and middle income regions. 2003. Working Paper 9, Disease Control Priorities Project. Published September 2003. Revised June 2005.
17. Ohl CA, Dodds Ashley ES. Antimicrobial stewardship programs in community hospitals: the evidence base and case studies. Clin Infect Dis 2011;53(suppl 1):S23-S28.
18. Trevidi KK, Kuper K. Hospital antimicrobial stewardship in the nonuniversity setting. Infect Dis Clin North Am. 2014;28(2):281-289.
19. Yam P, Fales D, Jemison J, Gillum M, Bernstein M. Implementation of an antimicrobial stewardship program in a rural hospital. Am J Health Syst Pharm. 2012;69(13);1142-1148.
20. LaRocco A Jr. Concurrent antibiotic review programs—a role for infectious diseases specialists at small community hospitals. Clin Infect Dis. 2003;37(5):742-743.
21. Bartlett JM, Siola PL. Implementation and first-year results of an antimicrobial stewardship program at a community hospital. Am J Health Syst Pharm. 2014;71(11):943-949.
22. Storey DF, Pate PG, Nguyen AT, Chang F. Implementation of an antimicrobial stewardship program on the medical-surgical service of a 100-bed community hospital. Antimicrob Resist Infect Control. 2012;1(1):32.
23. Fine MJ, Smith MA, Carson CA, et al. Prognosis and outcomes of patients with community-acquired pneumonia. A meta-analysis. JAMA. 1996;275(2):134-141.
24. Advic E, Cushinotto LA, Hughes AH, et al. Impact of an antimicrobial stewardship intervention on shortening the duration of therapy for community-acquired pneumonia. Clin Infect Dis. 2012;54(11):1581-1587.
25. Carratallà J, Garcia-Vidal C, Ortega L, et al. Effect of a 3-step critical pathway to reduce duration of intravenous antibiotic therapy and length of stay in community-acquired pneumonia: a randomized controlled trial. Arch Intern Med. 2012;172(12):922-928.
26. Stevenson KB, Samore M, Barbera J, et al. Pharmacist involvement in antimicrobial use at rural community hospitals in four Western states. Am J Health Syst Pharm. 2004;61(8):787-792.
27. Reese SM, Gilmartin H, Rich KL, Price CS. Infection prevention needs assessment in Colorado hospitals: rural and urban settings. Am J Infect Control. 2014;42(6):597-601.
28. McGregor JC, Furuno JP. Optimizing research methods used for the evaluation of antimicrobial stewardship programs. Clin Infect Dis. 2014;59(suppl 3):S185-S192.
29. Barlam TF, Cosgrove SE, Abbo LM, et al. Implementing an antibiotic stewardship program: Guidelines by the Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America. Clin Infect Dis. 2016;62(10):e51-e77.
30. Charani E, Castro-Sánchez E, Holmes A. The role of behavior change in antimicrobial stewardship. Infect Dis Clin N Am. 2014;28(2):169-175.
31. Attridge RT, Frei CR, Restrepo MI, et al. Guideline-concordant therapy and outcomes in healthcare-associated pneumonia. Eur Respir J. 2011;38(4):878-887.
32. MacDougal C, Polk RE. Antimicrobial stewardship programs in health care systems. Clin Microbiol Rev. 2005;18(4):638-656.
1. Li JZ, Winston LG, Moore DH, Bent S. Efficacy of short-course antibiotic regimens for community-acquired pneumonia: a meta-analysis. Am J Med. 2007;120(9):783-790.
2. Dimopoulos G, Matthaiou DK, Karageorgopoulos DE, Grammatikos AP, Athanassa Z, Falagas ME. Short- versus long-course antibacterial therapy of community-acquired pneumonia: a meta-analysis. Drugs. 2008;68(13):1841-1854.
3. Mandell LA, Wunderink RG, Anzueto A, et al; Infectious Diseases Society of America; American Thoracic Society. Infectious Diseases Society of America/American Thoracic Society consensus guidelines on the management of community-acquired pneumonia in adults. Clin Infect Dis. 2007;44(suppl 2):S27-S72.
4. Kalil AC, Metersky ML, Klompas M, et al. Management of adults with hospital-acquired and ventilator associated pneumonia: 2016 clinical practice guidelines by the Infectious Diseases Society of America and the American Thoracic Society. Clin Infect Dis. 2016;63(5):e61-e111.
5. Jenkins TC, Stella SA, Cervantes L, et al. Targets for antibiotic and healthcare resource stewardship in inpatient community-acquired pneumonia: a comparison of management practices with National Guideline Recommendations. Infection. 2013; 41(1):135-144.
6. Shlaes DM, Gerding DN, John JF Jr, et al. Society for Healthcare Epidemiology of America, and Infectious Diseases Society of America Joint Committee on the Prevention of Antimicrobial Resistance: guidelines for the prevention of antimicrobial resistance in hospitals. Clin Infect Dis. 1997;25(3):584-599.
7. Cohen SH, Gerding DN, Johnson S, et al; Society for Healthcare Epidemiology of America; Infectious Diseases Society of America. Clinical practice guidelines for Clostridium difficile infection in adults: 2010 update by the Society for Healthcare Epidemiology of America (SHEA) and the Infectious Diseases Society of America (IDSA). Infect Control Hosp Epidemiol. 2010;31(5):431-455.
8. Brown E, Talbot GH, Axelrod P, Provencher M, Hoegg C. Risk factors for Clostridium-difficile toxin-associated diarrhea. Infect Control Hosp Epidemiol. 1990;11(6):283-290.
9. McFarland LV, Surawicz CM, Stamm WE. Risk factors for Clostridium-difficile carriage and C. difficile-associated diarrhea in a cohort of hospitalized patients. J Infect Dis. 1990;162(3):678-684.
10. Shehab N, Patel PR, Srinivasan A, Budnitz DS. Emergency department visits for antibiotic-associated adverse events. Clin Infect Dis. 2008;47(6):735-743.
11. Dellit TH, Owens RC, McGowan JE Jr, et al; Infectious Diseases Society of America; Society for Healthcare Epidemiology of America. Infectious Diseases Society of America and the Society for Healthcare Epidemiology of America Guidelines for developing an institutional program to enhance antimicrobial stewardship. Clin Infect Dis. 2007;44(2):159-177.
12. Fridkin S, Baggs J, Fagan R, et al; Centers for Disease Control and Prevention (CDC). Vital signs: improving antibiotic use among hospitalized patients. MMWR Morb Mortal Wkly Rep. 2014;63(9):194-200.
13. Nussenblatt V, Avdic E, Cosgrove S. What is the role of antimicrobial stewardship in improving outcomes of patients with CAP? Infect Dis Clin North Am. 2013;27(1):211-228.
14. Septimus EJ, Owens RC Jr. Need and potential of antimicrobial stewardship in community hospitals. Clin Infect Dis. 2011;53(suppl 1):S8-S14.
15. Hensher M, Price M, Adomakoh S. Referral hospitals. In Jamison DT, Breman JG, Measham AR, eds, et al. Disease Control Priorities in Developing Countries. New York, NY: Oxford University Press; 2006:1230.
16. Mulligan J, Fox-Rushby JA, Adam T, Johns B, Mills A. Unit costs of health care inputs in low and middle income regions. 2003. Working Paper 9, Disease Control Priorities Project. Published September 2003. Revised June 2005.
17. Ohl CA, Dodds Ashley ES. Antimicrobial stewardship programs in community hospitals: the evidence base and case studies. Clin Infect Dis 2011;53(suppl 1):S23-S28.
18. Trevidi KK, Kuper K. Hospital antimicrobial stewardship in the nonuniversity setting. Infect Dis Clin North Am. 2014;28(2):281-289.
19. Yam P, Fales D, Jemison J, Gillum M, Bernstein M. Implementation of an antimicrobial stewardship program in a rural hospital. Am J Health Syst Pharm. 2012;69(13);1142-1148.
20. LaRocco A Jr. Concurrent antibiotic review programs—a role for infectious diseases specialists at small community hospitals. Clin Infect Dis. 2003;37(5):742-743.
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