Abstract: Objective This study aimed to investigate risk factors for postoperative stone recurrence after laparoscopic gallbladder-preserving cholecystolithotomy in patients with gallstones. Methods A total of 244 consecutive patients with gallstones were encountered in our hospital between January 2022 and December 2024, and all patients underwent before operation color Doppler ultrasonography to record peak systolic veIocity (PSV), end diastolic velocity (EDV) and mean flow velocity (Vm) of gallbladder artery. All patients underwent laparoscopic cholecystolithotomy, and were followed-up for one year. Multivariate Logistic regression analysis was applied to identify independent risk factors for postoperative stone recurrence. Results The stone recurrence rate was 11.9% (29/244) in our series by end of one-year follow-up after surgery; the gallbladder wall thickness, proportion of stone impaction and EDV level in the stone recurrence group were(2.8±0.4)mm, 13.8% and (10.9±2.2)cm/s, all significantly greater than [(2.4±0.2)mm, 3.7% and (9.2±1.4)cm/s, respectively, P＜0.05] in non-recurrence group; multivariate Logistic regression analysis showed that thicken gallbladder wall (OR=14.534,P<0.05), impacted stone (OR=4.656,P<0.05) and increased EDV level(OR=1.329,P<0.05) were all the independent risk factors for stone recurrence. Conclusion Gallstone might recur after laparoscopic cholecystolithotomy in patients with gallbladder stones, and color Doppler ultrasound could be the best postoperative follow-up strategies to find it early.

Key words: Gallstones, Laparoscopic cholecystolithotomy, Color doppler ultrasound, Postoperative stone recurrence, Risk factors