Urinary Tract Infection After Hysterectomy for Benign Gynecologic Conditions or Pelvic Reconstructive Surgery

OBJECTIVE: To report rates and identify risk factors for urinary tract infection (UTI) after hysterectomy for benign conditions or combined with pelvic reconstructive surgery. METHODS: This is a cohort study that included women who underwent hysterectomy either for benign gynecologic conditions or hysterectomy combined with pelvic reconstructive surgery from January 1, 2012, through June 30, 2014, at a single institution. The primary outcome was UTI within 8 weeks of surgery. Logistic regression modeling was used to develop a model for predicting UTI after surgery. RESULTS: Of 1,156 women included in the study, 136 (11.8%, 95% CI 10.0-13.8) developed UTI within 8 weeks. Women who underwent hysterectomy for a benign gynecologic condition that was not combined with pelvic reconstructive surgery had an overall UTI rate of 7.3% (95% CI 5.6-9.3) vs 21.7% (95% CI 17.6-26.4) after hysterectomy combined with pelvic reconstructive surgery. After adjusting for hormone therapy use, the following were independent variables associated with postoperative UTI: premenopausal status with an adjusted odds ratio (OR) of 1.80 (95% CI 1.11-2.99), anterior vaginal wall prolapse with an adjusted OR of 4.39 (95% CI 2.77-6.97), and postvoid residual greater than 150 mL with an adjusted OR of 2.38 (95% CI 1.12-4.36). Using this model, postoperative UTI rates ranged from 4.3% to 59.4% with high postvoid residual and presence of anterior prolapse having the strongest association. CONCLUSION: There are wide variations in the rate of UTI after hysterectomy for begin disease including pelvic reconstructive surgery. These variations can be explained with a model based on available preoperative data.