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Randomized Controlled Trial
STOP signs: A Population-Based Interrupted Time Series Analysis of Antibiotic Duration for Complicated Intra-Abdominal Infection Before and After the Publication of a Landmark RCT.
- Joshua S Ng-Kamstra, Andrea Soo, Paul McBeth, Ori Rotstein, Danny J Zuege, Daniel Gregson, Christopher James Doig, Henry T Stelfox, and Daniel J Niven.
- Department of Critical Care Medicine, University of Calgary, Calgary, AB.
- Ann. Surg. 2023 May 1; 277 (5): e984e991e984-e991.
ObjectiveTo determine if the STOP-IT randomized controlled trial changed antibiotic prescribing in patients with Complicated Intraabdominal Infection (CIAI).Summary Of Background DataCIAI is common and causes significant morbidity. In May 2015, the STOP-IT randomized controlled trial showed equivalent outcomes between four-day and clinically determined antibiotic duration.MethodsThis was a population-based retrospective cohort study using interrupted time series methods. The STOP-IT publication date was the exposure. Median duration of inpatient antibiotic prescription was the outcome. All adult patients admitted to four hospitals in Calgary, Canada between July 2012 and December 2018 with CIAI who survived at least four days following source control were included. Analysis was stratified by infectious source as appendix or biliary tract (group A) versus other (group B).ResultsAmong 4384 included patients, clinical and demographic attributes were similar before vs after publication. In Group A, median inpatient antibiotic duration was 3 days and unchanged from the beginning to the end of the study period [adjusted median difference -0.00 days, 95% confidence interval (CI) -0.37 - 0.37 days]. In Group B, antibiotic duration was shorter at the end of the study period (7.87 vs 6.73 days; -1.14 days, CI-2.37 - 0.09 days), however there was no change in trend following publication (-0.03 days, CI -0.16 - 0.09).ConclusionsFor appendiceal or biliary sources of CIAI, antibiotic duration was commensurate with the experimental arm of STOP-IT. For other sources, antibiotic duration was long and did not change in response to trial publication. Additional implementation science is needed to improve antibiotic stewardship.Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc.
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