Objective: The aim of this study was to compare perioperative outcomes of patients who underwent uncomplicated flexible
ureterorenoscopy with ureteral access sheath, with and without postoperative ureteral stenting.
Material and Method: Between April to December 2014, 50 consecutive patients underwent flexible ureterorenoscopy were
enrolled in the study. The patients who had indications for postoperative ureteral stent or those who had ureteric complications during procedure that needed postoperative ureteral stenting were excluded. Thirty-eight eligible patients were randomized into a ureteral stent or non-ureteral stent group following flexible ureterorenoscopy with ureteral access sheath. Patient demographic data, operative data and perioperative outcomes were evaluated. Irritative voiding symptom score was calculated by using irritative domains of International Prostate Symptom Score (IPSS).
Results: Baseline characteristics were well balanced between both groups. There was no significant difference in postoperative pain, analgesic requirement, postoperative fever, urinary tract infection, irritative voiding symptom scores and length of hospital stay between the two groups. Three patients in stent group had unplanned hospital visits. Operative time was
significantly shorter in non-stent group: 52+22 vs. 71+29 min (p = 0.02).
Conclusion: Non-ureteral stenting is safe and feasible in uncomplicated cases after flexible ureterorenoscopy with ureteral access sheath compared to stenting.

Keywords: Ureteral access sheath, Ureteral stenting, Flexible ureterorenoscopy, Safety