Urodynamic study in later pregnant women with urinary incontinence

Objective To investigate the urodynamic measurements in later pregnant women with urinary incontinence. Methods According to the symptoms, a total of 63 volunteers in later pregnancy were divided into two groups including urinary incontinence group and no symptom group. Fourteen women who were married but not delivered were included in control group. Urodynamic study was performed on all women. Results The occurrence rate of urinary incontinence in later pregnancy was 26.98%. The valsalva leak point pressure only occurred on two pregnant women were 50 cmH2O and 67 cmH2O respectively. Compared with the no symptom group, the maximum urethral closure pressure[(83.69±42.55)mmHg vs(108.09±34.95)mmHg, P＜0.05])and the functional urethral length [(30.45±8.42)mm vs (37.60±18.45)mm ,P＜0.05]of urinary incontinence group were decreased obviously. Conclusions The main reason of urinary incontinence in pregnancy was that the maximum urethral closure pressure could not sufficiently increase to compensate for the progressive increase in bladder pressure during pregnancy and functional urethral length could not correspondingly increase along with the pregnancy. Key words: Urinary incontinence; Urodynamics; Pregnancy trimester,third