A pilot study investigating the clinical and financial impact of a pharmacist discharge service in a hospital setting

Abstract

Introduction Medication errors during hospital discharge are a leading source of avoidable patient harm and healthcare resource strain. Pharmacist-led medicines reconciliation in hospital has demonstrated benefits in improving patient safety and reducing adverse drug events post-discharge. Aim The aim of this study was to evaluate the clinical and financial implications of a pharmacist discharge service on a surgical ward in an Irish hospital setting. Method A prospective single-centre pilot study was conducted to evaluate the impact of a clinical pharmacist discharge medication reconciliation service. The study was conducted over 8 weeks on a 31-bed surgical ward. Eligible patients were discharged during pharmacy working hours, on ≥3 medications, with pharmacist admission medicines reconciliation completed. A clinical pharmacist reviewed draft discharge prescriptions and communicated interventions to prescribers prior to discharge. Identified discrepancies were assessed by an expert panel for severity (visual analogue score), probability of adverse drug events and potential remedial healthcare use. Financial impact was estimated using cost avoidance modelling. Results Of 50 discharge prescriptions reviewed (646 medications), 184 discrepancies were identified in 40 prescriptions (126 prescribing and 58 communication errors). Most errors (84.8%) were rated as having moderate potential harm; 2.2% were classified as severe. Expert panel assessments indicated that pharmacist interventions prevented adverse drug events likely to result in additional healthcare utilisation by 74.7%. A potential annual net cost benefit of €554 921.53 and a cost-benefit ratio of 52.5 was calculated for the provision of a clinical pharmacist discharge service when all discharge prescriptions from the surgical ward (n=665) are reviewed. Conclusion The results show the clinical and financial benefits of a pharmacist-led discharge medication reconciliation service, resolving high-risk prescribing errors and reducing downstream healthcare utilisation. This represents a highly cost-effective intervention with potential for substantial system-wide savings by enhancing patient safety and resource efficiency at transitions of care.