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Techniques such as ureteral access sheath placement and balloon dilation are utilized to facilitate ureteroscopy. A retrospective review was performed to evaluate the efficacy and complications from ureteral access sheath (UAS) placement with or without sequential ureteral balloon dilation (SBD) in non-prestented patients who underwent ureteroscopy with UAS with or without SBD for renal or proximal ureteral stones from February 2014 to April 2017. This was a two-surgeon series of 124 patients divided into groups of SBD + UAS or direct UAS placement. Postoperative complications included hematuria, fever, and flank pain. Successful UAS insertion rates and postoperative complication rates were statistically significantly higher in the SBD + UAS group ( P  = 0.01 and 0.023, respectively). The procedure time, emergency department return, and 6-week stone-free rates were not statistically different between the groups. In conclusion, SBD + UAS has a higher success rate of UAS insertion compared to direct UAS alone, allowing for same-setting ureteroscopy. However, SBD + UAS is associated with significantly higher rates of fever, flank pain, and hematuria. We conclude that SBD + UAS and direct UAS are equivalent.

Safety and efficacy of sequential balloon dilation prior to ureteral access sheath insertion in nonstented patients undergoing ureteroscopy