Effectiveness of Assessing Ureteral Patency Using Preoperative Phenazopyridine.

Objectives: The aims of this study were to determine the efficacy of phenazopyridine when used intraoperatively to assess ureteral patency and to investigate factors that may influence its efficacy.

Methods: This is a retrospective chart review performed at the Olive View-UCLA Medical Center, a Los Angeles County teaching hospital, from January 2014 through July 2016. Patients undergoing cystoscopy at the time of gynecologic surgery were identified via department case logs.