2020 Volume 33 Issue 2 Pages 269-273
Purpose : This study aimed to define the efficacy and safety of retrograde intrarenal surgery (RIRS) using a semirigid and flexible ureterorenoscope with a holmium : yttrium-aluminum-garnet (Ho : YAG) laser as the initial treatment for upper urinary tract stones.
Methods : A total of 263 renal units (RUs) with upper urinary tract stones underwent RIRS as the initial operative treatment. Patients with no remaining fragments of ≧2 mm were considered stone free.
Results : The mean size of the stones was 10.8 mm (range : 3-40 mm). The stone-free rate was 70.0％ for all 263 RUs after only one transurethral lithotripsy treatment. For patients with stones measuring ≦10 mm in maximum diameter, a ＞80.0％ stone-free rate was achieved. Adverse events were found in 14.7％ cases.
Conclusion : RIRS using a semirigid and flexible ureterorenoscope with a Ho : YAG laser is effective and safe for upper urinary tract stone management.
