Flexible ureteroscopy lithotripsy without preoperative stent placement：a retrospective study

Abstract:

Objective：To investigate the efficacy and safety of flexible ureteroscopy lithotripsy without preoperative stent placement in the treatment of upper urinary tract calculi. Methods：The clinical data of 269 patients who were scheduled for flexible ureteroscopy lithotripsy without preoperative stent placement from November 2016 to September 2017 in our department were analyzed retrospec－tively. Results：The success rate of operation was 89.6%，while the mean operation time was 40.3 min. The complication rate was 6.2%，and the stone-free rate was 92.5%. Conclusion：Flexible ureteroscopy lithotripsy without preoperative stent placement is safe and effective，and it can decrease the medical cost，so it is worthy to be promoted.