Risk factors for recurrent bile duct stones after endoscopic sphincterotomy        DING Guo-qian, QIN Ming-fang, WANG Qing，et al. Minimally Invasive Surgery Center of Tianjin Nankai Hospital, Tianjin 300100，China
Corresponding author: QIN Ming-fang, E-mail:qins88@sian.com
Abstract    Objective    To analyze the risk factors for recurrent bile duct stones after endoscopic sphincterotomy (EST). Methods    The clinical data of 1971 consecutive patients who underwent EST for bile duct stones from June 2000 to September 2002 were analyzed retrospectively．Single factor analysis was performed on the related risk factors，and the statistic significant difference was re-introduced by non-conditional logistic regression model for multivariate analysis．Results    Follow up was definited in 1616 patients after EST. Recurrence of bile duct stones occurred in 181 patients with the recurrence rate of 11.2%. Single factor analysis and multi-factor logistic regression analysis showed that the recurrence of bile duct stones is related to gall bladder status，diverticula　ampullae，lithotripsy and pneumobilia. Conclusion    Management or prevention of gall bladder status, diverticula ampullae, lithotripsy and pneumobilia were significant for the prevention of recurrent bile duct stones.