O003 Comprehensive assessment of the management of acute cholecystitis in Scotland: a population wide cohort study of 47,558 patients

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Abstract Introduction Acute cholecystitis (AC) is one of the most common diagnoses within Emergency General Surgery, managed either operatively (cholecystectomy) or conservatively. Surgery in the acute phase has been shown to be safe and superior, however, operative rates vary widely. Furthermore, medium-long term survival rates with each approach are still not definitively established. This real-world population analysis aims to describe the current management and outcomes of patients with AC across Scotland. Methods This was a national cohort study using data obtained from Information Services Division, Scotland. All adult patients with the admission diagnostic code for AC were included. Patient level data were used to identify all patients admitted to Scottish hospitals between 1997–2019 and outcomes tracked for inpatients or after discharge through the unique patient identifier. This was mapped to mortality data to establish date and cause of death. Results 47558 patients diagnosed with AC, admitted in one of 46 hospitals were included. These patients accounted for 58824 episodes (27.2% of patients encountered >1 episode). The study population had a median age of 58 years (IQR=43-71), 64.4% were female, and most had no comorbidities. 28741(60.4%) patients had an operative intervention during the index admission. Patients who had an operation during their index admission had a lower risk of 90-day mortality compared to non-operative management (OR=0.62, 95%CI=0.55-0.70). Conclusion In this comprehensive analysis of AC in Scotland, 60% of patients had an index cholecystectomy. Patients undergoing surgery had a superior survival to those managed conservatively, further advocating for an operative approach in this cohort.