Risk factors for the development of biliary tract infection after choledochal-malformation surgery

To explore the risk factors of biliary tract infection after bile duct dilatation surgery.The study included 135 patients with choledochal malformation after bile duct dilatation surgery at our hospital from January 2019 to June 2021. We analyzed general data of infected and uninfected groups after bile duct dilatation surgery. Single/multiple factor logistic regression was used to analyse the factors influencing postoperative biliary tract infection in bile duct dilatation.There were statistically significant differences in preoperative history of biliary tract infection, partial hepatectomy, hilar anastomosis, and Todani staging between the two groups. Single factor Logistic regression analysis showed that preoperative history of biliary tract infection, partial hepatectomy, hepatic portal anastomosis and Todani staging IV and V were positively correlated with postoperative biliary tract infection following biliary duct dilatation (P＜0.05). In addition, logistic regression analysis of these general data with differential indicators as independent variables and postoperative biliary tract infection in biliary duct dilatation as a dependent variable showed that history of preoperative biliary tract infection and hepatic portal anastomosis were risk factors of postoperative biliary tract infection following biliary duct dilatation.Risk factors of biliary tract infection after bile duct dilatation include a history of preoperative biliary tract infection and hepatoportal anastomosis, which should be noted during clinical procedures to prevent or reduce the development of biliary tract infection after bile duct dilatation.