Evaluation of Adverse Drug Events and Medication Discrepancies in Transitions of Care Between Hospital Discharge and Primary Care Follow-Up

Abstract

Approximately two-thirds of adverse events posthospital discharge are due to medication-related problems. Medication reconciliation is a strategy to reduce medication errors and improve patient safety. Objective: To evaluate adverse drug events (ADEs), potential ADEs (pADEs), and medication discrepancies occurring between hospital discharge and primary care follow-up in an academic family medicine clinic. Adult patients recently discharged from the hospital were seen by a pharmacist for medication reconciliation between September 1, 2011, and November 30, 2012. The pharmacist identified medication discrepancies and pADEs or ADEs from a best possible medication history obtained from the electronic medical record (EMR) and hospital medication list. In 43 study participants, an average of 2.9 ADEs or pADEs was identified ( N = 124). The most common ADEs/pADEs identified were nonadherence/underuse (18%), untreated medical problems (15%), and lack of therapeutic monitoring (13%). An average of 3.9 medication discrepancies per participant was identified (N = 171), with 81% of participants experiencing at least 1 discrepancy. The absence of a complete and accurate medication list at hospital discharge is a barrier to comprehensive medication management. Strategies to improve medication management during care transitions are needed in primary care.