Abstract

BackgroundAntimicrobial stewardship initiatives and efforts have historically had a greater emphasis in the inpatient hospital setting. There is a need for outpatient stewardship, and additionally, accreditation standards are starting to require antimicrobial stewardship efforts in the ambulatory care setting. Fluoroquinolones are a target for antimicrobial stewardship based on their broad-spectrum activity, pharmacokinetics/pharmacodynamics, safety profile, downstream resistance, and risk of super infections. The objective of this study was to compare outpatient fluoroquinolone prescribing rates before and after pharmacist led initiative.MethodsThis was a prospective, quality improvement initiative between October 1, 2019 to June 1, 2020 at a community-based physician network across Indiana. The pharmacist initiative incorporated a live, educational presentation with intervention 1 and an informational letter to healthcare providers across the outpatient physician network with intervention 2. Data was collected from a computer-generated, prescription report. The primary outcome was fluoroquinolone prescribing rates at Central Indiana (CI) sites before and after pharmacist led interventions. Rate of fluoroquinolone prescribing was defined as total number of fluoroquinolone prescriptions per month. The secondary outcome included percentage of fluoroquinolone use at CI sites. Percentage of fluoroquinolone use was defined as monthly number of fluoroquinolones prescriptions compared to monthly number of all oral antibiotic prescriptions.ResultsThere was a 29.8% decrease (382 vs 268 prescriptions) in outpatient fluoroquinolone prescriptions at CI sites after intervention 1 compared to same month of previous year. There was a 43.7% decrease (428 vs 241 prescriptions) in outpatient fluoroquinolone prescriptions at CI sites after intervention 2. There was an overall 2.4% decrease (4.9% vs 2.5%) in percentage of fluoroquinolone use compared to all oral antibiotics at CI sites after intervention 2 compared to same month of previous year.ConclusionThese findings suggest the pharmacist led outpatient antimicrobial stewardship initiative successfully decreased fluoroquinolone prescribing rates across the network.DisclosuresChristian Cheatham, PharmD, BCIDP, Antimicrobial Resistance Solutions (Shareholder)

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