Sun's tip-flexible ureterorenoscopy combined with holmium laser lithotripsy for renal and upper ureter calculi

Abstract

Objective To evaluate the efficacy, safety and operating skills of Sun's tip-flexible ureterorenoscopy(tf-URS) with holmium laser in the treatment of renal and upper ureteral calculi. Methods Retrospective analysis of clinical data of 82 patients with renal and upper ureteral calculi were treated with tf-URS with holmium laser in our hospital, including 52 male (63.4%) and 30 female (36.6%), and 26 cases with upper ureteral calculi(31.7%), 56 cases with renal calculi(68.3%). The age ranged from (37±11) years old. Stone size was (1.4±0.6) cm. All the patients were diagnosed by ultrasound, CT or IVP. The operative time, postoperative complications and calculi clearance rate were observed. Results The success rate of insertion of tf-URS was 95.1% (78/82) in the first time. Four patients suffered ureterostenosis or ureteral distortion was changed to laparoscopy or PCNL. The success rate of lithotripsy was 97.4%(76/78) . The rate of total stone clearance was 96.1%(73/76) at 4 weeks, and 3 cases underwent ESWL. No serious complications occurred. Conclusion The tf-URS with holmium laser in the treatment of renal and upper ureteral calculi is safe, reliable and it has high success rate with low incidence of complications. Key words: Sun's ureterorenosope; Flexible ureteroscope; Holmium laser; Calculi