Retrograde Intrarenal Surgery for the Management of Kidney Stones Smaller than 20 mm: A Single-Center Experience of 452 Cases

Özet

Introduction: This study presents our outcomes of 452 patients who underwent retrograde intrarenal surgery (RIRS) for the treatment of renal stones smaller than 20 mm in the last five years Methods: We retrospectively reviewed the file of 452 patients who were performed RIRS for renal stones in our clinic between January 2013 and February 2018. Fluoroscopy was always used in all cases. Patients were investigated regarding demographic and operation data, stone location and size and stone-free rates. Patients were controlled by direct urinary system graphy on the postoperative first day and by non-contrasted computed tomography (CT) in a month after the intervention. Stone-free status was documented on CT if there were no residual stones or presence of residual fragments smaller than 3 mm after a month. Results: There were 285 (63%) male and 167 (36.9%) female patients with a mean age of 47.9 (range 12-85) years. Mean stone size was 13.5 mm (range 7-20 mm). Ureteral access sheath was used in 388 (85.8%) of the patients. Mean operative and fluoroscopy screening times were 70.6 (range 45-150) minutes and 17.6 (range 3-55) second, respectively. The average hospital stay was 1.3 (range 1-5) days. Twenty (4.4%) patients had minor complications, including renal colic, hematuria, infection and/or fever. No major complications and blood transfusions were noted. Stone-free status was achieved in 403 (89.1%) of the patients in the first month postoperatively Discussion and Conclusion: We believe that RIRS is an effective, reliable and safe treatment modality for kidney stones smaller than 20 mm. The procedure has low morbidity and high success rate