Implementation and Effect of a Pharmacist-to-Pharmacist Transitions of Care Initiative on Ambulatory Care Sensitive Conditions

BACKGROUND: One of the most vulnerable times in a patient’s encounter with a health care system is during transitions of care (TOC), defined by the Joint Commission as the movement of a patient from one health care provider or setting to another. The use of a clinical pharmacist as a member of the care transitions team has received focused attention and shown improved benefit. OBJECTIVE: To determine the effect of a large-scale pharmacist-to-pharmacist TOC model where inpatient clinical pharmacists identify patients during a hospital stay, provide evidence-based care and education, and then coordinate follow-up with an outpatient clinical pharmacist who provided comprehensive medication management (CMM) under a scope of practice. METHODS: This was a multisite, single health care system, quasi-experimental, matched interrupted time series design study conducted at an integrated Veterans Affairs (VA) health care system. Patients admitted with a primary or secondary diagnosis of diabetes, hypertension, chronic obstructive pulmonary disease (COPD) and heart failure (HF) were included for enrollment. Clinical pharmacists rounding on inpatient medical teams provided evidence-based recommendations to optimize medications while coordinating follow-up by an outpatient clinical pharmacy specialist within 10 days of discharge for CMM. The primary endpoint of this study was to determine the effect on the composite all-cause 30-day acute care utilization rate (emergency department [ED] visit or hospital readmission) for patients discharged with a primary or secondary diagnosis of diabetes, hypertension, COPD, and HF compared with a comparator group of patients with similar discharge diagnosis before implementation of the TOC program. RESULTS: 484 patients (242 in each group, with 366 heart failure, 66 COPD, 10 hypertension, and 42 diabetes) were included for analysis. For the primary outcome of composite 30-day, all-cause acute care utilization rates, no statistically significant difference was identified, with 26.9% of patients in the intervention group and 28.9% in the historical group readmitted or seen in the ED within 30 days of discharge (P = 0.6852). Outcomes for the HF index acute care utilization rate (i.e., admission for the same disease state discharged with), including 30-day index readmissions (P = 0.0014), 30-day index ED visits (P = 0.0047), and 90-day index readmissions for HF (P < 0.0001) were significantly reduced. CONCLUSIONS: Our study is one of the first to identify at-risk patients using rounding clinical pharmacists in the acute care arena and coordination of care systematically with a clinical pharmacy specialist practicing under a scope of practice targeted for CMM. Although the overall primary endpoint was not met, a reduction in acute care utilization rates for HF at 30 and 90 days can be achieved.