Retrograde flexible ureteroscopic lithotripsy with holmium for treatment of renal stones in children

Abstract

Objective To evaluate the efficacy and safety of retrograde flexible ureteroscopic lithotripsy with holmium(RIRS) for treatment of renal stones in children. Methods From June 2015 to June 2016，16 pediatric patients with renal stones underwent the RIRS，and the patients aged between 1.2 to 10 years . The stone size ranged 1.0－2.0 cm ，mean(1.33±0.35)cm. Among the 16 children, single pelvis stones were in 8 cases, pelvic－low pole in 2 cases, mid pole in 4 cases and low pole in 2 cases. Results Fifteen cases were successful，1 case faile to place ureteral access sheath. Double－J stent of F4.7 was inserted in all patients 4 weeks in advance.Mean operative time was range 20－80 minutes ，mean(38.57±22.86) minutes.The stone－free rate at 1 month was 100%. Fever occurred in 2 cases.The average hospital stay was range 1－3 days，mean (1.57±0.78) days. Conclusions Retrograde flexible ureteroscopic lithotripsy with holmium produces high stonefree rate and clinical safety for pediatric renal stones<2.0 cm，but sufficient preoperative preparation and careful perioperative safety control are required . Key words: Kidney Calculi; Child; Ureteroscopy; Lasers, Solid-State