O196: Gallbladder Necrosis: Predictive Factors in Patients Undergoing Emergent Cholecystectomy

Abstract

Abstract Introduction Gallstones are present in up to 25% of the general population and approximately 2% of these become symptomatic. Gallbladder necrosis is a complication of gallstones associated with higher risks of morbidity and mortality. Identification of risk factors which portend to gallbladder necrosis is key in prioritising investigation and treatment for higher risk patients. Method A retrospective review of all patients undergoing emergency cholecystectomy in a tertiary hospital over a 2-year period was performed. Gallbladder necrosis was diagnosed on histopathological examination of operative specimens. Multivariable logistic regression was performed to determine risk factors for gallbladder necrosis. Results 152 patients underwent acute cholecystectomy and 44 (29%) had proven gallbladder necrosis. Multivariable model demonstrated that white cell count (WCC) (OR 1.122, 95% CI 1.031-1.221, p=0.007), C-reactive protein (CRP) (OR 1.004, 95% CI 1.001-1.008, p=0.022) and smoking status (OR 5.724, 95% CI 1.323-24.754, p=0.020) were independently predictive of gallbladder necrosis. Notably, advancing age, elevated BMI, diabetes mellitus or ASA grade were not found to be associated with developing necrosis. Conclusion Patients at risk of gallbladder necrosis include those with higher WCC, CRP and active smokers. Given the increased potential complications, these risk factors should be identified early in the management of those admitted with gallstone disease to ensure such patients receive aggressive medical therapy alongside timely and guided surgical intervention.