74 Is routine ureteral access sheath necessary for all retrograde intrarenal surgeries?

74 Is routine ureteral access sheath necessary for all retrograde intrarenal surgeries? Ozyuvali E.1, Damar E.2 Turgut Ozal University, Dept. of Urology, Ankara, Turkey, 2Keçiören Training and Research Hospital, Dept. of Urology, Ankara, Turkey INTRODUCTION & OBJECTIVES: Retrograde Intrarenal Surgery (RIRS) is the most important minimally surgical treatment for the kidney stones. Ureteral access sheath is one of the routine equipment of RIRS which makes reentries easier, shortens the operation time and making the vision better by decreasing the intrapelvic pressure however it’s higher morbidity and expense. We investigated the necessity of using routine access sheath for RIRS. MATERIAL & METHODS: The patients who had undergone RIRS for kidney stones between January 2011 and June 2014 included the study. All patients evaluated by computed tomography or intravenous pyelography. RIRS performed under general anesthesia. The patients that ureteral access sheath have been used were grouped as Group 1, and the other who haven’t been used were grouped as Group2. RESULTS: RIRC performed to 504 renal units. Of those renal units, 469(%93) were performed using access sheath (Group 1) and 35 (%7) of them not (group 2). Mean stone size was 14,67mm and 11,2 mm in group 1 and 2, respectively. Mean operation time was 31 min and 34 min in group 1 and 2, respectively. There were no statistically significance between both groups regarding age, sex and final stone free rates. There were 2 ureteral perforations that were treated by placing intraoperative double J stent. There were no major complications in group 2. CONCLUSIONS: Using routine access sheath during RIRS is necessary and reliable because lessening the operation time and eases the re-entry of ureterorenoscope on behalf of its morbidity and expense. Eur Urol Suppl 2015; 14(8): e1390