Multimodal Intervention Assessing the Appropriateness of Acid Suppression Therapy is Associated With Reduced Prescriptions at the Time of Discharge for Hospitalized Inpatients.

Background: Acid suppression therapy (AST), including proton pump inhibitors and histamine 2 receptor antagonists, are an overused class of medications. When used inappropriately, AST leads to polypharmacy, increased healthcare costs, and possible negative health consequences. Objective: To assess whether an intervention including prescriber education combined with a pharmacist-driven protocol was effective in reducing the percentage of patients who were discharged with inappropriate AST. Methods: This was a prospective pre-post study of adult patients who were prescribed AST before or during their admission to an internal medicine teaching service. All internal medicine resident physicians received education on appropriate AST prescribing. During the 4-week intervention period, dedicated pharmacists assessed the appropriateness of AST and made recommendations regarding deprescribing if no appropriate indication was identified. Results: During the study period, there were 14 166 admissions during which patients were prescribed AST. Out of the 1143 admissions during the intervention period, appropriateness of AST was assessed by a pharmacist for 163 patients. AST was determined to be inappropriate for 52.8% (n = 86) of patients and discontinuation or de-escalate of therapy occurred in 79.1% (n = 68) of these cases. The percentage of patients discharged on AST decreased from 42.5% before the intervention to 39.9% after the intervention ( Conclusion: This study suggests that a multimodal deprescribing intervention reduced prescriptions for AST without an appropriate indication at the time of discharge. To increase the efficiency of the pharmacist assessment several workflow improvements were identified. Further study is necessary to understand the long-term outcomes of this intervention.