Non-Radical Hysterectomy and the Function of the Lower Urinary Tract: I: Urodynamic quantification of changes in storage function

The intermediate sequelae of non-radical abdominal and vaginal hysterectomies on the storage function of the lower urinary tract were studied by comparison of pre- and postoperative urodynamic parameters. A statistically significant reduction in maximum cystometric capacity after abdominal extrafascial and vaginal hysterectomies was found, together with a decline in bladder compliance. Both findings are attributed to a decrease in the musculoelastic properties of the detrusor muscle caused by edema and surgical injury. This reduction in capacity and compliance, however, appeared to have no clinical importance. Sensory innervation remained unaltered. In general no evidence was found that hysterectomy contributed to the development of involuntary detrusor contractions and motor urge incontinence. Urethral competence, assessed by urethral pressure profilometry and urethral leakage pressure measurement, remained unaffected. No increase in stress incontinence was seen after hysterectomy. Vaginal hysterectomy appeared to influence storage function slightly more than abdominal hysterectomy did. Postoperative lower urinary tract dysfunction is for the most part determined by the preoperative urological status.