PD16-06 INCREASING THE SIZE OF URETERAL ACCESS SHEATH DURING RETROGRADE INTRARENAL SURGERY IMPROVES SURGICAL EFFICIENCY WITHOUT INCREASING COMPLICATIONS

Purpose To directly compare intraoperative and post-operative outcomes and complications between three groups undergoing ureteroscopy: no ureteral access sheath, 12/14 Fr and larger 14/16 Fr ureteral access sheaths (UAS).