P-BN62 Predictive factors for subtotal cholecystectomy in delayed elective cholecystectomy after acute biliary presentation

Abstract

Abstract Background Laparoscopic cholecystectomy is introduced as a treatment option for symptomatic gall bladder disease in 1987 and it is now the gold standard treatment for symptomatic gall bladder disease. The rate of conversion from laparoscopic to open ranges between 5 and 10% .The step of paramount importance in cholecystectomy is the clear identification of the cystic duct and artery, which in some situations can be difficult especially in presence of dense adhesions or severely inflamed gall bladder, increasing the risk for common bile duct (CBD) injury. The traditional response to encountering a difficult laparoscopic cholecystectomy procedure is to perform conversion to an open procedure but the open conversion has its drawbacks; The subtotal cholecystectomy has been shown to reduce the need for conversion to an open procedure, thus reducing complications associated with the open cholecystectomy. Studies have also shown that this procedure decreases the bile duct injury rate . Subtotal cholecystectomy rates increased nationally over the past decade. The aim of our study is to identify factors which could predict the need for a subtotal cholecystectomy in the acute biliary admission group having delayed elective Laparoscopic cholecystectomy ,hence proper planning in terms on theatre timing, expertise and patients consenting Methods We conducted a retrospective analysis of patients who had delayed elective laparoscopic subtotal cholecystectomy after admission with Acute Biliary disease and managed conservatively in a tertiary London hospital, between 01/03/2019-29/02/2020 We collected data for all patients whose primary diagnosis was either Acute Cholecystitis, Cholelithiasis, Ascending Cholangitis, Choledocholithiasis and Gallstone Pancreatitis, and analysed these in terms of patient demographics, , duration of index admission, laboratory and radiological results during the acute admission and need to intervention during the acute phase either as a drain (cholecystostomy) or ERCP during initial management. Data were collected from electronic patient records, regarding age, gender, indication for surgery, operative notes, preoperative gall bladder wall thickness on US scan, laboratory results during acute admission. BMI, other interventions such as endoscopic retrograde cholangiopancreatography (ERCP) and cholecystostomy Odds ratios were calculated to assess the risk of patients having a subtotal cholecystectomy. Results 243 patients presented between 01/03/19-29/02/2020 which acute biliary pathology – 95 Male and 148 Female, 230 patients had delayed elective laparoscopic cholecystectomy at least 6 weeks post-acute admission Of 230 laparoscopic cholecystectomies, 22 (9.56%) cases had a subtotal cholecystectomy 13(59.9%) patients were male patients, median age 72 (54.5%) had BMI more than 30 No open conversion. The indication for cholecystectomy in the subtotal group was as follows: Acute cholecystitis 12 (54.54%), Ascending cholangitis 4 (18.18%), Choledocholithiasis 3(13.63%), gall stone pancreatitis 1(4.5%), Cholelithiasis 2 (9.09%)The subtotal cholecystectomy group had Gall bladder wall thickness during index admission documented 4 (18.18%)patients had Gall bladder wall thickness less than 4 or equal 4 mm, 18(81.81%) patients had Gall bladder wall thickness more 4 mm. Odds ratios were calculated to assess the correlation between several characteristics and the likelihood of having a subtotal cholecystectomy in the delayed elective cholecystectomy, we concluded that Older age, male sex, BMI more than 30, previous ERCP, thickened GB wall on ultrasound scan more than 4 mm WCC > 15000 during acute admission, all increased the likelihood of having a subtotal cholecystectomy Conclusions Older age, male sex, BMI more than 30, previous ERCP, thickened GB wall on ultrasound scan more than 4 mm WCC > 15000 during acute admission all increased the likelihood of having a subtotal cholecystectomy. We recommend all these information should be documented during planning for laparoscopic cholecystectomy to allow proper theatre time planning and patient consenting for the possibility of having a subtotal cholecystectomy.