The incidence of ureteral obstruction and the value of intraoperative cystoscopy during vaginal surgery for pelvic organ prolapse

Objective: The objective of the study was to determine the incidence of ureteral obstruction during vaginal surgery for pelvic organ prolapse and the accuracy and efficacy of intraoperative cystoscopy. Study design: The Study was a retrospective review of 700 consecutive patients who underwent vaginal Surgery for anterior and/or apical pelvic organ prolapse with universal intraoperative cystoscopy. Results: Thirty-seven patients (5.3%) had no spillage of dye from 1 or both ureters intraoperatively. The false-positive and negative cystoscopy rates were 0.4%, and 0.3%, respectively. Thus, the true incidence of intraoperative ureteral obstruction was 5.1%. Intraoperative cystoscopy was accurate in 99.3% of cases, with a sensitivity and specificity of 94.4%. and 99.5%, respectively. Suture removal relieved ureteral obstruction in 88% of cases. Six subjects (0.9%) had true ureteral injuries. Conclusion: Vaginal surgery for anterior and/or apical pelvic organ prolapse is associated with an intraoperative ureteral obstruction rate of 5.1%. Intraoperative cystoscopy accurately detects ureteral obstruction and allows for relief of obstruction in the majority of cases. (c) 2006 Mosby, Inc. All rights reserved.