A medication review and deprescribing method for hospitalised older patients receiving multiple medications.

Background: Prescribing of multiple medications in older patients poses risk of adverse drug events.

Aim: To determine whether a structured approach to deprescribing - identifying and discontinuing unnecessary medications - in the inpatient setting is feasible and reduces medication burden.

Methods: Prospective pilot study of a convenience sample of patients aged ≥65 years admitted acutely to general medicine units in a tertiary hospital and receiving eight or more regular medications on presentation. The intervention comprised an education programme and a paper-based or computerised proforma listing clinical and medication data linked with a five-step decision support tool for selecting drugs eligible for discontinuation, which were then ceased or were being weaned by the time of discharge.

Results: Among 50 patients of median age 82.5 years and six co-morbidities, 186 of 542 (34.3%) regular medications were discontinued, representing a significant decrease in the median (interquartile range) number of medications per patient at discharge compared with presentation (7 (5-9) vs 10 (9-12), P < 0.001). Medication lists were reduced by at least two medications in 84% of patients, and by four or more in 50%. Statins, gastric acid suppressive agents, angiotensin-converting enzyme inhibitors/angiotensin receptor antagonists and inhaled bronchodilators were the most frequently ceased medications. Of 39 patients in whom follow-up status at a median of 78 days was ascertained, only 5 of 413 (1.2%) ceased medications were recommenced among three patients because of symptom relapse.

Conclusion: A standardised method of medication review and deprescribing may significantly reduce medication burden in a cohort of older hospitalised patients.