Urodynamic evaluation of urinary incontinence using a microtransducer.

Using the Millar Microtransducer system urodynamic measurements were made before and 1 year after 100 operations for urinary stress incontinence. Seventy-eight of the 100 patients were completely continent 1 year after surgery. The results were compared to the findings in 44 normal women. The urodynamic data obtained little relation to the clinical findings because of a large scatter around the mean value. There were significant differences between pre- and postoperative values and normal examinations. However, in continent patients the postoperative values were still not in the normal range, and some values increased in some patients and decreased in others. The lack of consistency may have been due to the Millar Microtransducer which is not specially designed for the measurement of urethral pressure profiles.