Abstract

BackgroundFollowing updates to IDSA guidelines in 2019, Hartford HealthCare implemented changes to the community acquired pneumonia (CAP) order-set in August 2020 to reflect criteria for prescribing of broad-spectrum antimicrobial therapy. The objective of the study was to evaluate changes in broad-spectrum antibiotic days of therapy (DOT) following these order-set updates with accompanying provider education.MethodsThis was a multi-center, quasi-experimental, retrospective study of patients with CAP from 9/1/19 to 10/31/19 (pre-intervention) and 9/1/20 to 10/31/20 (post-intervention). Patients were identified using ICD-10 codes indicating lower respiratory tract infection and excluded if had a positive SARS-COV-2 PCR during admission. Data collected included demographics, labs and vitals, radiographic, microbiological, and antibiotic data. The primary outcome was change in broad-spectrum antibiotic DOT, specifically anti-pseudomonal β-lactams and anti-MRSA antibiotics. Secondary outcomes included guideline-concordance of initial antibiotics, utilization of an order-set to prescribe antibiotics, and length of stay (LOS).ResultsA total of 331 and 352 patients were included in the pre- and post-intervention groups, respectively. The overall duration of broad-spectrum therapy was a median of 2 days (IQR 0-8 days) in the pre-intervention period and 0 days (IQR 0-4 days) in the post-intervention period (p< 0.001). Patients in whom the order-set was used in the post-intervention period were more likely to have guideline-concordant regimens ([36/40] 90% vs. [190/312] 60.9%; p = 0.003). There were no differences in order set usage (10% vs. 11.3%, p = 0.642) between the pre- and post-intervention groups, respectively. Hospital LOS was lower in the post-intervention cohort (4.8 days [2.9-7.2 days] vs. 5.3 days [IQR 3.5-8.5 days], p = .002). ConclusionDespite low utilization of the order-set, education surrounding order-set changes appeared to improve antibiotic prescribing and hospital LOS in our population. Further opportunities to improve order-set use and thus further increase guideline-concordant therapy are still available. Disclosures Joseph L. Kuti, PharmD, Allergan (Speaker’s Bureau)BioMérieux (Consultant, Research Grant or Support, Speaker’s Bureau)Contrafect (Scientific Research Study Investigator)GSK (Consultant)Merck (Research Grant or Support)Paratek (Speaker’s Bureau)Roche Diagnostics (Research Grant or Support)Shionogi (Research Grant or Support)Summit (Scientific Research Study Investigator) David P. Nicolau, PharmD, Abbvie, Cepheid, Merck, Paratek, Pfizer, Wockhardt, Shionogi, Tetraphase (Other Financial or Material Support, I have been a consultant, speakers bureau member, or have received research funding from the above listed companies.)

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