Abstract
Objectives To evaluate the efficacy and safety of flexible ureteroscopic holmium laser lithotripsy in treating ureteral calculi.Methods We retrospectively reviewed the data of 98 patients from May 2010 to April 2012 who underwent flexible ureteroscopic holmium laser lithotfipsy.Among the cases,the calculi were located at the upper or middle calyx in 54 patients,at the lower calyx in 31,at the renal pelvis in 7,and at multiple calyxes in 6.The diameter of the stones ranged from 8mm to 19mm with a mean of 13.2mm.The stones were fragmentized by using 200μm Holmium laser fiber.A pig-tail stent would be set at the end of the procedure for 2 weeks.A follow-up by KUB or renal CT scan was done 4 weeks after the procedure to evaluate the result of the endoscopic nephrolithotripsy.Results The calculi were detected in 96 patients(96/98,98.0％).The success rate in a single procedure was 90.8％ (89/98),and the overall success rate was 95.9％ (94/98).After 4 weeks,the total evacuation rate of the calculi was 88.8％ (87/98).The mean operative time was 33.7min(15min58min).No severe complications occurred during the operation.Conclusions The flexible ureteroscopic holmium laser lithotripsy is a safe and effective mini-invasive therapy for patients with renal calculi,with high discovery rate,high success rate,high evacuation rate and few severe complication. Key words: Lithotripsy, Laser; Larers, Solid-State; Ureteroscopy
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