Urodynamic changes after successful operation for stress urinary incontinence.

Urethral closure pressure profiles were evaluated in 18 patients who had surgical cure of stress urinary incontinence. Functional length and maximal closure pressures were compared before and after the operation to determine what effect, if any, successful surgical intervention had on these parameters. No apparent differences were identified. The reasons for successful surgical treatment of stress urinary incontinence are unrelated to any change in urethral functional length or closure pressure.