Abstract

  Advances of a flexible ureteroscope is that flexible ureteroscope can reach all parts of the urinary tract. In spite of its therapeutic benefits, flexible ureteroscopic treatment for renal and ureteral calculi may be associated with some minor or major complications.

  A retrospective review of the records of 1000 cases who underwent flexURS from April 2010 to August 2016 was performed. To compare the complications after introduction of flexURS, the patients were divided into five groups (First 200 to Fifth 200, respectively). Complication rates of flexible ureteroscopic treatment in Clavien grading scale Ⅲ〜Ⅴ were 8.5%, 4.5%, 3%, 3% and 2%. To reduce severe complications, it is necessary to have performed about 200 cases. Increased surgeon experience tended to decrease the risk of severe complications and inaccessible ureter, but the incidence of urosepsis and ureteral stenosis were not reduced. We will show troubleshooting for our complications.