Abstract

Antimicrobial guidance for common bile duct (CBD) stones is limited. We sought to examine the effect of antibiotic duration on infectious complications in patients with choledocholithiasis and/or gallstone pancreatitis. We performed a post hoc analysis of a prospective, observational, multicenter study of patients undergoing same admission cholecystectomy for choledocholithiasis and gallstone pancreatitis between 2016 and 2019. We excluded patients with cholangitis and/or cholecystitis. Patients were divided into groups based on duration of antibiotics: prophylactic (<24 hours) or prolonged (≥24 hours). We analyzed these two groups in the preoperative and postoperative periods. Outcomes included infectious complications, acute kidney injury (AKI), and hospital length of stay (LOS). There were 755 patients in the cohort. Increasing age, CBD diameter, and a preoperative endoscopic retrograde cholangiopancreatography (odds ratio, 1.91; 95% confidence interval, 1.34-2.73; p < 0.001) significantly predicted prolonged preoperative antibiotic use. Increasing age, operative duration, and a postoperative endoscopic retrograde cholangiopancreatography (odds ratio, 4.8; 95% confidence interval, 1.85-13.65; p < 0.001) significantly predicted prolonged postoperative antibiotic use. Rates of infectious complications were similar between groups, but LOS was 2 days longer for patients receiving overall prolonged antibiotics (p < 0.0001). Patients with AKI received two more days of overall antibiotic therapy (p = 0.02) compared with those without AKI. Rates of postoperative infectious complications were similar among patients treated with a prolonged or prophylactic course of antibiotics. Prolonged antibiotic use was associated with a longer LOS and AKI. Therapeutic, Level IV.

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