A randomized controlled clinical study on preoperative double J tube placement in flexible ureteroscopic lithotripsy
Yang Weiqing1,2, Li Xun1,2, He Yongzhong1,2, Feng Gang1,2, Li Tian1, Xu Guibin1, Lai Dehui1, Xu Wei1, Xie Qingling1, Zhao Haibo1, Yang Minlong
Department of Urology, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, China; 2Center for Minimally Invasive Technique Innovation and Translation, Guangzhou Medical University, Guangzhou 510700, China
Objective s To evaluate the efficacy and safety of preoperative double J tube placement in flexible ureteroscopic lithotripsy. Methods From November 2014 to March 2015, 60 kidney stones or proximal ureter stones patients who were treated by flexible ureteroscopic lithotripsy, were randomly divided into group A and B. 30 case in Group A underwent directly surgery, 30 cases in group B indwelled a double J tube in ureter a week before the surgery. Both groups placed ureteral flexible ureteroscopic access sheath during the operation. The data were analyzed and compared. Results All 60 patients were successfully conducted transurethral flexible ureteroscopic lithotripsy. There were six patients had to dilateal the ureter before indwelling flexible ureteroscopic channel sheath in group A, while the Group B had 100% one-time success rates of indwelling flexible ureteroscopic channel sheath. (A vs B, 80% vs 100% , P<0.05). The stone-free rates in postoperative 1-2 days (A vs B, 60% vs 56.7%), the stone-free rates in postoperative one month (A vs B, 96.7% vs 93.3%), and the mean hospitalization costs had no significant difference between the two groups. The hospitalization duration of the two groups [A vs B, (6.7 ±1.7) days vs (11.7± 3.7) days] had significant difference (P<0.05). One patient of group A appeared ureteral stone street after surgery, then was treated by ureteroscopic lithotripsy again. No severe complication occurred in both groups. Conclusion s One week's preoperative double J tube placement is beneficial to facilitate flexible ureteroscopic lithotripsy with ureteral access sheath. It can reduce the incidence of ureteral injury.