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Adverse events over two years after retropubic or transobturator midurethral sling surgery: findings from the Trial of Midurethral Slings (TOMUS) study

      Objective

      To describe surgical complications in 597 women over a 24-month period after randomization to retropubic or transobturator midurethral slings.

      Study Design

      During the Trial of Midurethral Slings study, the Data Safety Monitoring Board regularly reviewed summary reports of all adverse events using the Dindo Surgical Complication Scale. Logistic regression models were created to explore associations between clinicodemographic factors and surgical complications.

      Results

      A total of 383 adverse events were observed among 253 of the 597 women (42%). Seventy-five adverse events (20%) were classified as serious (serious adverse events); occurring in 70 women. Intraoperative bladder perforation (15 events) occurred exclusively in the retropubic group. Neurologic adverse events were more common in the transobturator group than in retropubic (32 events vs 20 events, respectively). Twenty-three (4%) women experienced mesh complications, including delayed presentations, in both groups.

      Conclusion

      Adverse events vary by procedure, but are common after midurethral sling. Most events resolve without significant sequelae.

      Key words

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