Heart failure (HF) is one of the leading causes of hospitalizations and the most expensive Medicare diagnosis. Its prevalence continues to rise with a projected increase of 46% from 2012 to 2030 resulting in > 8 million people aged ≥ 18 years with HF in the United States. Despite improvements in therapy, mortality remains unacceptably high with a 50% mortality rate within 5 years. Early detection strategies are needed to identify patients at risk of developing HF to delay the disease course and improve survival.1,2
Emerging data indicates that natriuretic peptide biomarker-based screening using B-type natriuretic peptide (BNP) or N-terminal pro-B-type natriuretic peptide (NT-proBNP) and early intervention for patients at risk of HF could prevent development of left ventricular dysfunction or new-onset HF.3-5 The 2013 St. Vincent’s Screening to Prevent Heart Failure (STOP-HF) trial is the largest study to date to evaluate BNP as a screening tool for patients at risk for HF.4 Patients at risk of HF who did not have established left ventricular systolic dysfunction or symptomatic HF were assigned randomly to usual primary care or BNP screening. Patients with BNP levels ≥ 50 pg/mL underwent echocardiogram and were referred to a cardiovascular specialty service for management. The cardiovascular specialty clinic included a team of registered nurses, nurse practitioners, pharmacists, dieticians, palliative care specialists, and cardiologists. Individuals in the intervention group showed increased renin-angiotensin system (RAS) inhibitor use at follow-up (control, 49.6%; intervention, 59.6%; P = .01). All patients received coaching by a nurse who emphasized individual risk, importance of medication adherence, and healthy lifestyle behaviors. After a mean follow-up of 4.2 years, 59 of 677 participants (8.7%) in the control group and 37 of 697 (5.3%) in the intervention group (odds ratio [OR], 0.55; 95% CI, 0.37 to 0.82; P = .003) met the primary end point of left ventricular dysfunction with or without HF. BNP-based screening in conjunction with collaborative care reduced rates of left ventricular dysfunction and HF.
In the 2013 PONTIAC trial, patients with type 2 diabetes mellitus (T2DM) without cardiac disease but with NT-proBNP levels > 125 pg/mL were randomized to usual diabetes care or intensified care at a cardiac outpatient clinic for initiation and increase of RAS inhibitors and β blockers.5 After 2 years, patients randomized to the intensified care group showed a 65% risk reduction of the primary endpoint of hospitalization or death from cardiac disease (P = .04).
Based on this evidence, the 2017 focused update of the American College of Cardiology (ACC)/American Heart Association (AHA)/Heart Failure Society of America (HFSA) guideline for managing HF added a IIa recommendation for natriuretic peptide biomarker screening in those at risk of developing HF.6 The guideline recommends biomarker screening in conjunction with team-based care, including a cardiovascular specialist, and guideline-directed management and therapy to prevent development of left ventricular dysfunction or new-onset HF.
Although ordering a natriuretic peptide biomarker laboratory test is straightforward, the variability of team-based care across institutions and health systems makes it difficult to standardize screening and interventions for patients at risk for HF. We developed and piloted a process using clinical pharmacists in primary care for natriuretic peptide biomarker screening and risk factor reduction within the established patient aligned care team (PACT) framework at a US Department of Veterans Affairs (VA) medical center. In this paper, we describe our implementation process including descriptive preliminary outcomes.
Methods
The PACT team-based approach in primary care clinics is similar to the patient-centered medical home framework. A PACT includes the veteran patient and an interdisciplinary team of health professionals composed of their primary care practitioner (PCP), registered nurse care manager, clinical pharmacist, and other clinical and administrative staff. The PACT clinical pharmacist has prescriptive authority within a scope of practice to provide postdiagnostic chronic disease state management including management of T2DM, hypertension, HF, chronic obstructive pulmonary disease, anticoagulation, tobacco cessation, and atherosclerotic cardiovascular disease (ASCVD) risk reduction. Clinical pharmacists can prescribe and adjust medications and order laboratory tests.
Our institution, Clement J. Zablocki VA Medical Center (CJZVAMC) in Milwaukee, Wisconsin, has a specialty HF clinic that primarily manages ACC/AHA Stage C HF patients. The HF clinic uses a team-based approach to collaborate and coordinate care for the veteran. The HF team is comprised of cardiology specialists, registered nurses, clinical pharmacists, dietitians, and administrative staff. Two PACT clinical pharmacists also staff the HF clinic at CJZVAMC and work collaboratively to initiate, adjust, and optimize veterans’ HF medication regimens.
Two primary care PACT panels were selected for this project. Before implementation, a pharmacy resident and 3 PACT clinical pharmacists (2 of whom also staff the HF clinic) met with a HF cardiology specialist and 2 PACT PCPs to finalize the team-based process and workflow. PCPs were presented with the evidence-based background, purpose, and project design, which included patient identification, NT-proBNP laboratory test ordering, medication adjustment schedules, and protocol for ordering echocardiograms (Figure). Templated notes were created to allow for consistent documentation in patients’ electronic health record. A telephone script also was written for the initial telephone call to patients to explain in patient-friendly terms the implications of an elevated NT-proBNP level, the echocardiogram procedure, and recommendations for risk reduction.