Abstract
Urodynamic data from patients with stress incontinence were assessed before, and one year after, a modified Marshall-Marchetti-Krantz (MMK) procedure. A comparison was made between patients cured and those not cured by the operation. After the operation the maximal urethral closure pressure was significantly raised in both groups (P = 0.0418). The functional urethral length showed only an insignificant increase. Prior to surgery both functional urethral length and maximal urethral closure pressure were significantly higher in those patients who were cured by the operation compared with those who suffered from recurrent incontinence (P =0.00116 and P = 0.00090, respectively). These high preoperative values of urethral closure pressure and functional urethral length seem to be important prognostic factors. A comparison with previously published data from patients operated on by anterior colporrhaphy or the Pereyra suspension showed that urethral closure pressure was highest after the MMK procedure. Therefore the MMK operation seems to be specially suitable for incontinent patients with low maximal urethral closure pressure.
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