Flexible Ureteroscopy With Holmium Laser Lithotripsy For Renal Stones Of 2 Cm Or Greater:Report Of 68 Cases

Objective:To evaluate the safety and curative efficacy of flexible ureteroscopy(FURS)with holmium laser lithotripsy in the treatment of renal stones of 2 cm or greater in length-diameter.Methods:A total of 68 patients who had the renal calculi of 2 cm or greater in length-diameter were treated with FURS in our department from March 2014 to August 2015 were enrolled in this study.The stone-free rates after 1 procedure,and postoperative complications were collected and retrospectively analyzed.Results:The one-time successful rate of ureteroscopic insertion was 100%,and the successful rate of stone finding was 100%.After 1 procedure,the percentage of stone-free patients was 86.76%,and the stone-free rate was 90.9%for those with stones of 2～3 cm in size,and 69.20%for those with stones>3 cm.The total complication rate was 7 35%,and was 7.27%and 7.69%respectively for those with stones of 2～3 cm,and>3 cm.One case had renal hemorrhage during operation and was improved after conservative treatment.Two cases occurred post-operative ureteral stone street,and the stones were removed successful after emergency operation.Post-operative fever occurred in 4 cases.Two of them were due to ureteral stone street and were improved after emergency operation,and the other 2 cases with fever were improved after anti-infective therapy.No severe complication happened,such as severe hemorrhage and septic shock in all the cases.Conclusion:FURS with holmium laser lithotripsy is another favorable option for eligible patient and experienced urologists in treatment of renal stones of over 2 cm in size.