Development and implementation of a pharmacist-managed outpatient parenteral antimicrobial therapy program

Improving patient safety and access to healthcare: The role of pharmacist-managed clinics in optimizing therapeutic outcomes

Contemporary patient care requires a multidisciplinary approach to monitoring, assessing, and managing diseases. Promoting multidisciplinary approaches encourages the purposeful participation of many healthcare professionals and harnessing their combined knowledge to provide tailored treatment plans. Pharmacists, skilled and knowledgeable professionals in medication management, drug-related problems, and disease prevention, can offer vital interventions that contribute to improved patient outcomes. Advances in healthcare and information technology have expanded pharmacists' professional roles and made them essential in healthcare. Pharmacist-managed clinics (PMCs), an innovative healthcare approach, could potentially improve patient safety, satisfaction, accessibility, and affordability to quality healthcare. Spread across the healthcare continuum, pharmacists have a well-defined role in providing comprehensive pharmaceutical care and interprofessional collaboration, further reinforcing the necessity of establishing PMCs. This narrative review aims to compile and summarize information on PMCs from PubMed, Scopus, Web of Science, and Google Scholar till December 2023. The PMC shortlist covers specialties such as cardiovascular, hematologic, endocrine, pain medicine, respiratory medicine, infectious diseases, gastrointestinal, nephrology, neurology, and oncology. Pharmacists in disease-specific PMCs have demonstrated improved treatment outcomes and access to specialty care. Additionally, based on peer-reviewed literature, the review also highlights how PMCs enhance the pharmacist's role in improving disease-specific outcomes, overall quality of care, and medication management. The inclusion criteria are randomized controlled trials, case-control studies, cohort studies, and pre-post studies involving patients from cardiology, hematology, endocrinology, pain medicine, respiratory medicine, infectious diseases, neurology, nephrology, gastroenterology, and oncology specialties, focusing on pharmacist-driven clinics, published in English, and covering any geographical location. The exclusion criteria include review articles, proposed models, commentaries, editorials, and those published in languages other than English. Our findings reveal that PMCs are underutilized globally. PMCs work better in developed countries, possibly on account of robust healthcare infrastructure, adequate healthcare budgets, availability of trained pharmacists, and supportive regulatory environments. The review found that pharmacist-led interventions, such as medication monitoring and patient education, significantly enhance therapeutic outcomes. Pharmacist Managed Clinics improve affordability and acceptability, expanding healthcare access in outpatient and inpatient settings. This review also highlights the critical need for implementing PMCs to improve healthcare delivery, particularly in providing comprehensive and accessible services in developing countries.

Application of the COM-B model to explore barriers and facilitators to participation in research by hospital pharmacists and pharmacy technicians: A cross-sectional mixed-methods survey

BACKGROUND

Combining research and clinical practice is crucial for advancing evidence-based healthcare and improving pharmacy service delivery. While hospital pharmacists report significant interest in research, this does not translate to high levels of research engagement. Furthermore, little is known regarding barriers and motivators for pharmacy technician involvement in research.

OBJECTIVE

To characterise the barriers and enablers to engaging in practice-based research reported by hospital pharmacy staff using the Capability, Opportunity, Motivation - Behaviour (COM-B) framework.

METHODS

An online cross-sectional survey, using the validated Research Capacity in Context tool, was sent to all employees of a statewide hospital pharmacy service. Respondent characteristics and quantitatively reported barriers and motivators were analysed using descriptive statistics. Qualitative data from open text responses were analysed through inductive thematic analysis. Results were mapped to the components of the COM-B framework at individual, team and organisation levels.

RESULTS

278 responses were received (response rate 43.3%) from pharmacists (68.0%) and pharmacy assistants/technicians (28.4%) across 19 hospitals. Research behaviour was influenced by factors linked to five of six COM-B subdomains. Reflective motivation, linked to a desire to improve practice and patient care, self-development, and recognition, indicates pharmacy staff would like to engage in research. However, barriers related to physical opportunity (lack of time for research, other work roles that take priority) and psychological capability (lack of skills and mentorship) hindered involvement. Social opportunity and automatic motivation, tied to managerial support, role perceptions and departmental research culture were also reported facilitators. Subtle differences in the factors that motivate hospital pharmacists and pharmacy technicians were identified.

CONCLUSIONS

Mapping factors associated with research participation by hospital pharmacy staff to the COM-B model is an important step towards identifying evidence-based intervention types that could form the basis of strategies to optimise hospital pharmacy staff engagement with practice-based research, using the behaviour change wheel.

Decreased hospital readmissions after programmatic strengthening of an outpatient parenteral antimicrobial therapy (OPAT) program

OBJECTIVE

To determine whether a structured OPAT program supervised by an infectious disease physician and led by an OPAT nurse decreased hospital readmission rates and OPAT-related complications and whether it affected clinical cure. We also evaluated predictors of readmission while receiving OPAT.

PATIENTS

A convenience sample of 428 patients admitted to a tertiary-care hospital in Chicago, Illinois, with infections requiring intravenous antibiotic therapy after hospital discharge.

METHODS

In this retrospective, quasi-experimental study, we compared patients discharged on intravenous antimicrobials from an OPAT program before and after implementation of a structured ID physician and nurse-led OPAT program. The preintervention group consisted of patients discharged on OPAT managed by individual physicians without central program oversight or nurse care coordination. All-cause and OPAT-related readmissions were compared using the χ² test. Factors associated with readmission for OPAT-related problems at a significance level of P < .10 in univariate analysis were eligible for testing in a forward, stepwise, multinomial, logistic regression to identify independent predictors of readmission.

RESULTS

In total, 428 patients were included in the study. Unplanned OPAT-related hospital readmissions decreased significantly after implementation of the structured OPAT program (17.8% vs 7%; P = .003). OPAT-related readmission reasons included infection recurrence or progression (53%), adverse drug reaction (26%), or line-associated issues (21%). Independent predictors of hospital readmission due to OPAT-related events included vancomycin administration and longer length of outpatient therapy. Clinical cure increased from 69.8% before the intervention to 94.9% after the intervention (P < .001).

CONCLUSION

A structured ID physician and nurse-led OPAT program was associated with a decrease in OPAT-related readmissions and improved clinical cure.

Reflections on implementation of a failure-point-focused outpatient parenteral antimicrobial therapy management program

Management of outpatient parenteral antimicrobial therapy (OPAT) is complex, and incorporation of a pharmacist can improve outcomes. The creation of new clinical programs is often limited by staffing resources. We describe our collaborative program that utilized a failure-point-focused design process to optimize OPAT activities and management.

Successful Integration of Clinical Pharmacists in an OPAT Program: A Real-Life Multidisciplinary Circuit

Outpatient parenteral antimicrobial therapy (OPAT) programs encompass a range of healthcare processes aiming to treat infections at home, with the preferential use of the intravenous route. Although several barriers arise during the implementation of OPAT circuits, recent cumulative data have supported the effectiveness of these programs, demonstrating their application in a safe and cost-effective manner. Given that OPAT is evolving towards treating patients with higher complexity, a multidisciplinary team including physicians, pharmacists, and nursing staff should lead the program. The professionals involved require previous experience in infectious diseases treatment as well as in outpatient healthcare and self-administration. As we describe here, clinical pharmacists exert a key role in OPAT multidisciplinary teams. Their intervention is essential to optimize antimicrobial prescriptions through their participation in stewardship programs as well as to closely follow patients from a pharmacotherapeutic perspective. Moreover, pharmacists provide specialized counseling on antimicrobial treatment technical compounding. In fact, OPAT elaboration in sterile environments and pharmacy department clean rooms increases OPAT stability and safety, enhancing the quality of the program. In summary, building multidisciplinary teams with the involvement of clinical pharmacists improves the management of home-treated infections, promoting a safe self-administration and increasing OPAT patients' quality of life.

Impact of Pharmacist-Led Implementation of a Community Hospital-Based Outpatient Parenteral Antimicrobial Therapy on Clinical Outcomes in Thailand

Few studies have analyzed community hospital-based parenteral anti-infective therapy (CohPAT). We aimed to assess the clinical impact of a pharmacist-led implementation of a clinical practice guideline (CPG) for CohPAT, and to determine the pharmacist’s role in CohPAT medication management. The prospective-period patients (post-implementation group) were compared with the historical control-period patients (pre-implementation group) for receiving a continuous antimicrobial parenteral injection. A CPG was used for laboratory testing for efficacy and safety, the monitoring of adverse drug events during admission, microbiology results coordination, and dosage adjustment. For any antimicrobial drug-related problems, the pharmacist consulted with the clinicians. Over 14 months, 50 participants were included in each group. In the pre-implementation period, 7 (14%) and 4 (8%) out of 50 patients received an inappropriate dosage and nonlaboratory monitoring for dose adjustment, respectively. The patients received the proper dosage of antimicrobial agents, which increased significantly from 78% pre- to 100% post-implementation (p = 0.000). The pharmacist’s interventions during the prospective-period were completely accepted by the clinicians, and significantly greater laboratory monitoring complying with CPG was given to the postimplementation group than the pre-implementation group (100% vs. 60%; p = 0.000). Significantly less patients with unfavorable outcomes (failure or in-hospital mortality) were observed in the post-implementation than in the pre-implementation (6% vs. 26%; p = 0.006) group. For the logistic regression analysis, lower respiratory infection (adjusted OR, aOR 3.68; 95%CI 1.13–12.06) and the post-implementation period (aOR 0.21; 95%CI 0.06–0.83) were significant risk factors that were associated with unfavorable outcomes. Given the better clinical outcomes and the improved quality of septic patient care observed after implementation, pharmacist-led implementation should be adopted in healthcare settings.

Probable ertapenem-induced encephalopathy; case report and suggested alternatives for chronic prostatitis

Ertapenem is a carbapenem antibiotic usually reserved for complicated infections. Drug-induced neurotoxicity is a rare adverse reaction associated with ertapenem, and may be directly related to its chemical structure. We report a case of a 64-year-old male with a hematological history and chronic prostatitis that was admitted to hospital for gait instability, clumsiness, dysarthria and tremors. He started ertapenem intravenous 1 g once daily a week prior to admission. Creatinine clearance calculation by the Cockcroft-Gault method was 52 mL/min and total protein levels were low. Ertapenem's administration was discontinued and the patient's neurological symptoms improved dramatically just one day after. The result of the Naranjo Scale was six, suggesting a probable adverse drug reaction. We discussed if he could receive meropenem in case of severe infection such as septic shock. Considering the patient's medical history, the chemical structure of meropenem and the fact that there are almost no reported cases of neurotoxicity from this drug, we assume that meropenem could be used in case of severe infection in patients with history of neurotoxicity caused by ertapenem if no added risk factors are present, such as renal failure.

Survey of pharmacists on their roles and perceptions of outpatient parenteral antimicrobial therapy in the United States

OBJECTIVES

To define outpatient parenteral antimicrobial therapy (OPAT) clinical pharmacy practice across the United States, specifically pharmacist functions, design of pharmacist involvement, and to compare pharmacist training of those who practice in OPAT to infectious diseases pharmacists who do not.

METHODS

A survey of a possible 32 questions was emailed to the American College of Clinical Pharmacists (ACCP) Infectious Diseases Practice and Research Network (PRN) e-mail list. Results were focused on US-based respondents.

PARTICIPANTS

In total, 87 pharmacists responded; 27 of these pharmacists (31%) practiced in OPAT.

RESULTS

Training background did not differ between groups. Programs with an OPAT pharmacist were more likely to have a formal OPAT team compared to those without an OPAT pharmacist (P < .001). OPAT pharmacists were early in their careers with 66.7% practicing <5 years in OPAT. Most OPAT pharmacists (66.7%) practiced at an academic medical center with a median full-time equivalent (FTE) of 0.6. Moreover, 63% utilized a collaborative practice agreement and 81.5% shared job functions with other pharmacist roles, most commonly antimicrobial stewardship. Few OPAT programs involved a dispensing component (28%). The median daily census was 43 patients followed by an OPAT pharmacist. Pharmacists performed a variety of tasks in OPAT.

CONCLUSION

Pharmacist nondispensing involvement in OPAT is an emerging trend in the United States with wide variability in program structure and pharmacist tasks. A ratio of 1 OPAT pharmacist for every 45-70 OPAT patients is proposed to facilitate expansion of pharmacist clinical practice in OPAT.

Risk factors for readmission among patients receiving outpatient parenteral antimicrobial therapy: a retrospective cohort study

In the Netherlands, home treatment with intravenous antimicrobial therapy is a relatively new concept. Although several studies have shown that outpatient parenteral antimicrobial therapy (OPAT) can be administered safely, people receiving antimicrobials at home remain at risk for adverse events, including readmission. The aim of our retrospective study was to identify risk factors for readmission in patients discharged with OPAT. Patients who were at least 18 years or older, discharged with OPAT between January 2016-December 2018 were included. Variables that were collected consisted of baseline demographics, complications, readmission within 30 days and treatment failure. Multivariate logistic regression analysis was performed to identify risk factors for readmission. A total of 247 patients were included; the most common reason for OPAT was bone and joint infections (17%). Penicillin (37%), cephalosporin (26%) and vancomycin/aminoglycoside (15%) were the most commonly prescribed antimicrobials. Among patients receiving medication subject to therapeutic drug monitoring (i.e. aminoglycosides or vancomycin), 51% (19/37) received weekly therapeutic drug monitoring. Receiving aminoglycosides or vancomycin (adjusted OR 2.05; 95% CI 1.30-3.25, p < 0.05) and infection of prosthetic material (adjusted OR 2.92, 95% CI 1.11-7.65, p < 0.05) were independent risk factors associated with readmission. Although patients receiving medication subject to therapeutic drug monitoring are at higher risk of readmission, only half of the patients discharged with aminoglycosides or vancomycin were monitored according to IDSA guidelines. A specialized team in charge of monitoring patients with OPAT is more likely to increase the rate of monitoring to prevent readmissions and complications.

Failure modes and effects analysis to improve transitions of care in patients discharged on outpatient parenteral antimicrobial therapy

PURPOSE

To identify barriers to safe and effective completion of outpatient parenteral antimicrobial therapy (OPAT) in patients discharged from an academic medical center and to develop targeted solutions to potentially resolve or improve the identified barriers.

SUMMARY

A failure modes and effects analysis (FMEA) was conducted by a multidisciplinary OPAT task force to evaluate the processes for patients discharged on OPAT to 2 postdischarge dispositions: (1) home and (2) skilled nursing facility (SNF). The task force created 2 process maps and identified potential failure modes, or barriers, to the successful completion of each step. Thirteen and 10 barriers were identified in the home and SNF process maps, respectively. Task force members created 5 subgroups, each developing solutions for a group of related barriers. The 5 areas of focus included (1) the OPAT electronic order set, (2) critical tasks to be performed before patient discharge, (3) patient education, (4) patient follow-up and laboratory monitoring, and (5) SNF communication. Interventions involved working with information technology to update the electronic order set, bridging communication and ensuring completion of critical tasks by creating an inpatient electronic discharge checklist, developing patient education resources, planning a central OPAT outpatient database within the electronic medical record, and creating a pharmacist on-call pager for SNFs.

CONCLUSION

The FMEA approach was helpful in identifying perceived barriers to successful transitions of care in patients discharged on OPAT and in developing targeted interventions. Healthcare organizations may reproduce this strategy when completing quality improvement planning for this high-risk process.

Improving rates of venous thromboembolism prophylaxis in multiple myeloma patients on immunomodulatory drugs through a pharmacy-based system

INTRODUCTION

Immunomodulatory drugs used to treat multiple myeloma carry an increased risk of venous thromboembolic (VTE) disease. Previously published guidelines outline consensus opinion on how to mitigate this risk.

METHODS

We collected baseline data to analyze how these strategies are utilized at our single institution and sought to improve the rates of anticoagulation for high-risk patients. This was done through a quality improvement project that added pharmacy/haematology oversight to the VTE risk assessment.

RESULTS

Thirty-nine patients newly started on IMiDs were assessed for VTE risk. This information was passed on to the myeloma provider for consideration. Twenty-two patients were classified as high risk for VTE. Of the high-risk patients, 14 (64%) were placed on an anticoagulant for thromboprophylaxis. Eleven (79%) of the 14 used direct oral anticoagulants (DOACs). Eight high-risk patients did not receive an anticoagulant for thromboprophylaxis; 4 of these developed VTE. No patients on anticoagulation developed a VTE. This strategy had rare minor bleeding complications.

CONCLUSION

This quality action verifies guideline-based thromboprophylaxis in multiple myeloma and supports the benefit of pharmacy oversight in improving VTE rates. The use of DOACs in myeloma should be further explored.

Recent innovations and new applications of outpatient parenteral antimicrobial therapy

INTRODUCTION

Outpatient parenteral antimicrobial therapy (OPAT) is safe and effective for selected patients managed within an organized clinical service. Service configurations however are evolving, patient populations are changing and new evidence is emerging which challenges traditional OPAT practice.

AREAS COVERED

This review will discuss evolving OPAT service delivery from the traditional model of infusion center toward nonspecialist, community and remotely delivered OPAT and the challenges this represents. We consider new patient populations including those with incurable infection or infections at the end of life and difficult to reach populations including people who inject drugs. The evidence base that underpins the multi-disciplinary approach to OPAT delivery will be examined and particularly the role of the antimicrobial pharmacist and specialist nurse. Evidence for new treatment options which challenge established OPAT practice including complex oral antibiotic regimens, long acting parenteral agents and drug stability in continuous infusion antibiotics will be considered. Finally we emphasize the central importance of antimicrobial stewardship and good clinical governance which should underpin OPAT practice.

EXPERT OPINION

Changing patient populations, service structures and team roles coupled with a growing infection management evidence base means that OPAT services and practice must evolve. Challenging traditional practice is essential to ensure best patient outcomes and cost-efficiency.

Clinic- and Hospital-Based Home Care, Outpatient Parenteral Antimicrobial Therapy (OPAT) and the Evolving Clinical Responsibilities of the Pharmacist

Clinic- and hospital-based home care describes models of care where services commonly associated with hospital inpatient care are provided at the patient's home or in an outpatient or community-based clinic. Hospital in the Home (HITH), also termed Hospital at Home (HaH) in parts of Europe and America, is a common and important example of this type of care. Other examples include infusion centers, skilled nursing facilities (particularly in the USA), self-administration models (including home infusion services) and administration through outpatient or community clinics. Different models of HITH care are used internationally and these encompass a wide range of services. Medication administration, particularly outpatient parenteral antimicrobial therapy (OPAT), is an important element in many of these models of care. There is a key role for pharmacists since the provision of medication is integral in this model of patient care outside the hospital setting. Data on the growing importance of HITH and OPAT as well as the administration of medications suited to clinic- and hospital-based home care, including subcutaneous and intramuscular injectables, immunoglobulins and other blood fractions, cancer chemotherapy, total parenteral nutrition, biologicals/biosimilars, vasopressors and enzymes, using differing service models, are described. The pharmacist's role is evolving from that involved primarily with dose preparation and supply of medications. Their clinical expertise in medication management ensures that they are an integral member and leader in these models of care. Their role ensures the safe and quality use of medicines, particularly across transitions of care, with the pharmacist taking on the roles of educator and consultant to patients and health professional colleagues. Activities such as antimicrobial stewardship and ongoing monitoring of patients and outcomes is fundamental to ensure quality patient outcomes in these settings.

Pharmacist value-added to neuro-oncology subspecialty clinics: A pilot study uncovers opportunities for best practices and optimal time utilization

PURPOSE

To evaluate neuro-oncology clinician time utilization for medication management and identify a cost beneficial role for integration of a dedicated pharmacy specialists.

METHODS

A pharmacist was temporarily integrated into a neuro-oncology clinic for a 30-day period to evaluate the clinical practice and perform a 14-day clinical chart evaluation and patient interactions as part of a single institutional exploratory analysis. The pharmacist completed screenings for drug-drug interactions, new therapies, medication reconciliation, and advanced interventions as part of a collaborative practice agreement for pharmacist autonomy. Pharmacist time spent was calculated and documented within the patient encounters to support physician decision-making. A comparative estimate of pharmacist versus physician time utilization and cost for each was completed to derive a savings analysis for integration of a dedicated clinic pharmacist.

RESULT

During the 14-day clinical assessment, the pharmacist completed 147 encounters with 338 interventions. Of the encounters, 90% (n = 132) were higher complexity requiring plan modification, and approximately 48% (n = 162) of all interventions required ≥10 minutes of the pharmacist's time. Physician non-patient-facing time devoted to medication tasks was 5-hours weekly (0.125 FTE, full time equivalents), an estimated direct salary cost of $937/week ($45,000 yearly). Hire of a part-time pharmacist at 0.50 FTE would cover the clinical need with supported documentation and medication monitoring at a cost of $45,000/year.

CONCLUSION

Defining the roles for dedicated neuro-oncology clinic pharmacists allows for cost-savings through re-allocation of physician time and improves subspecialty clinic operations as well as patient care.

2018 Infectious Diseases Society of America Clinical Practice Guideline for the Management of Outpatient Parenteral Antimicrobial Therapy

A panel of experts was convened by the Infectious Diseases Society of America (IDSA) to update the 2004 clinical practice guideline on outpatient parenteral antimicrobial therapy (OPAT) [1]. This guideline is intended to provide insight for healthcare professionals who prescribe and oversee the provision of OPAT. It considers various patient features, infusion catheter issues, monitoring questions, and antimicrobial stewardship concerns. It does not offer recommendations on the treatment of specific infections. The reader is referred to disease- or organism-specific guidelines for such support.

Updated good practice recommendations for outpatient parenteral antimicrobial therapy (OPAT) in adults and children in the UK

UK good practice recommendations for outpatient parenteral antimicrobial therapy (OPAT) were published in 2012 and 2015 for adult and paediatric patients, respectively. Here we update the initial good practice recommendations in a combined document based on a further review of the OPAT literature and an extensive consultation process. As with the previous good practice recommendations, these updated recommendations are intended to provide pragmatic guidance for new and established OPAT services across a range of settings and to act as a set of quality indicators for service evaluation and quality improvement.

Risk factors for readmission in patients discharged with outpatient parenteral antimicrobial therapy: a retrospective cohort study

Background

Outpatient parenteral antimicrobial therapy (OPAT) is a practical and effective way of delivering antimicrobial therapy, but may be associated with significant risk for hospital readmission. This study aimed to elucidate risk factors related to 30-day readmissions in patients who were discharged with OPAT at Mount Sinai Beth Israel (MSBI).

Methods

This IRB approved retrospective cohort study included patients who were at least 18 years or older, admitted to MSBI from August 2015 to March 2016, and discharged to receive OPAT. Patients with intravenous antibiotics prescribed for chronic suppression or planned readmission within 30 days were excluded. The main outcome was readmission to the hospital within 30 days from previous hospital discharge. Univariate and logistic regression analyses were performed to determine predictors of 30-day readmission.

Results

There were a total of 200 patients included in the analysis; the median age was 60 years, 65.5% were male, and the median Charlson score was 2. A total of 155 (78%) patients received a peripherally inserted central catheter (PICC); the remainder was discharged with a midline. The most common medications prescribed for OPAT included cephalosporins (41%), vancomycin (31%), carbapenems (23%), and penicillins (16%). A total of 42 patients (21%) were readmitted within 30 days after previous discharge. Discharge to a skilled nursing facility or subacute rehabilitation center was found to be an independent predictor of readmission on logistic regression analyses (p <  0.05).

Conclusion

Readmissions are common in patients discharged with OPAT. Recognizing predictors of readmission may help determine strategies to optimize care.