Abstract
BackgroundIt is unknown whether cholecystectomy for acute pancreatitis (AP) affects the risk of post-pancreatitis diabetes mellitus (PPDM). We aimed to investigate the associations between cholecystectomy, recurrent biliary events prior to cholecystectomy, and the risk of PPDM in patients with AP. MethodsUsing New Zealand nationwide data from 2007 to 2016, patients with first admission for AP were identified (n = 10,870). Cholecystectomy was considered as a time-dependent exposure. Timing of cholecystectomy was categorized as same-admission, readmission, and delayed cholecystectomy. Recurrent biliary events prior to cholecystectomy were identified. Multivariable Cox regression analyses were conducted. ResultsAmong 2147 patients who underwent cholecystectomy, 141 (6.6%) developed PPDM. Overall, cholecystectomy was not significantly associated with the risk of PPDM (adjusted hazard ratio, 1.14; 95% confidence interval, 0.94–1.38). Delayed cholecystectomy was significantly associated with an increased risk of PPDM (adjusted hazard ratio, 1.36; 95% confidence interval, 1.01–1.83). Patients who had 2 or ≥3 recurrent biliary events prior to cholecystectomy were at a significantly increased risk of PPDM. ConclusionCholecystectomy in general was not associated with the risk of PPDM in patients with AP. Two or more repeated attacks of AP (or other biliary events) were associated with a significantly increased risk of PPDM.
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