Background Older age and inappropriate prescribing is related to a greater rate of emergency department visits and hospitalisations. Objective To assess the efficacy of an interprofessional collaboration programme in which a review of the medication of older patients seen in the emergency observation unit was carried out. Setting Emergency departments at four Spanish hospitals. Method Randomised, controlled study. Patients over 65 years of age presenting to the emergency department were randomised to a control or an intervention group. In the intervention group, a pharmacist reviewed the patients' chronic medication and identified any potentially inappropriate prescriptions based on the STOPP/START criteria. Each case was discussed with the emergency specialist and a recommendation to modify the treatment was sent to the general practitioner. Main outcome measure Rate of emergency visits and hospital admissions. Results The adjusted rate ratio of emergency visits and hospital admissions was 0.808 (95% CI 0.617 to 1.059) at 3 months, 0.888 (95% CI 0.696 to 1.134) at 6 months and 0.954 (95% CI 0.772 to 1.179) at 12 months. There was a statistically significant reduction at 3 months in two of the hospitals that participated in the study [adjusted rate ratio at 3 months was 0.452 (95% CI 0.222 to 0.923) in hospital 3 and 0.567 (95% CI 0.328 to 0.983) in hospital 4]. Conclusion Overall, the intervention did not reduce the number of emergency visits and hospital admissions. However, a significant effect was observed in centres were a high acceptance rate of treatment recommendations was achieved.
Keywords: Clinical pharmacy; Emergency department; Medication review; Potentially inappropriate prescriptions; Primary care; STOPP/START criteria; Spain.