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Anogenital Distance and Perineal Measurements of the Pelvic Organ Prolapse POP Quantification System
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Is urethral pressure associated with parity and delivery mode?
Ka Lai Shek1,2, Hans Peter Dietz3
1Liverpool Clinical School, Western Sydney University, Sydney, Australia. shekkalai@yahoo.com.hk.
International Urogynecology Journal
|June 1, 2022
Summary
Childbirth can affect urethral sphincter function, with the first vaginal birth having the most impact. Instrumental delivery did not show a significant effect on maximum urethral pressure in this study.
Area of Science:
- Urogynecology
- Obstetrics
- Pelvic Floor Disorders
Background:
- Stress urinary incontinence is the most common type of urinary incontinence.
- Childbirth is a known risk factor for stress urinary incontinence.
Purpose of the Study:
- To evaluate the association between delivery mode and urethral sphincter function.
- To measure urethral sphincter function using maximum urethral pressure (MUP).
Main Methods:
- Retrospective study of 1238 women undergoing urodynamic testing.
- Classification of women based on delivery mode: nulliparous, cesarean section, spontaneous vaginal delivery, vacuum-assisted delivery, and forceps delivery.
Main Results:
- A significant association was found between vaginal parity and MUP (P < 0.001).
- Delivery mode was significantly associated with MUP on ANOVA testing.
- Regression analysis indicated only age was significantly associated with MUP (P < 0.001).
Conclusions:
- The initial vaginal birth appears to be the primary contributor to childbirth's effect on urethral sphincter function.
- Instrumental delivery did not demonstrate a significant effect on urethral sphincter function in this cohort.
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