LAUSR

To measure the impact of the placement of a midurethral sling (MUS) on development of urinary tract infections (UTI) in women with stress urinary incontinence. This is an analysis of a large managed care organization MUS database from 2005 to 2016. The database was queried to identify UTI and diagnosis of recurrent UTI. The primary outcome was the UTI rate after MUS. Secondary outcomes included the recurrent UTI rate and rates of UTI over time. Over the study period, 13,404 MUS were performed. In the 12 postoperative months, 23% of patients developed a UTI, while 4% developed a de novo recurrent UTI diagnosis. UTIs were most frequently diagnosed in the 1st month, with the 7th postoperative day the most common. Predictors of UTI development included increased age (OR 3.69 [95% CI 2.58–5.26]), being diabetic (OR 1.43 [95% CI 1.28–1.60]), and having urinary retention requiring prolonged catheterization (OR 2.45 [95% CI 2.11–2.85]). UTIs were less likely to be diagnosed in those with transobturator MUS (OR 0.85 [95% CI 0.78–0.94]). Patients who developed a UTI were more likely to have a reoperation (p = 0.0147), including a reoperation for mesh revision/removal (p = 0.0287), and recurrent SUI (p = 0.0394). Patients who developed a UTI were more likely to develop postoperative de novo urgency urinary incontinence (UUI) (p < 0.0001). Patients are at risk of UTI and rUTI after MUS. Risk of developing UTIs decreases with time. Predictors of developing UTI can help surgeons in the care of patients after MUS.