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Clinical assessment of urethral sphincter function
E J McGuire1, C C Fitzpatrick, J Wan
1Section of Urology, University of Michigan Hospitals, Ann Arbor.
The Journal of Urology
|November 1, 1993
Summary
Maximum urethral pressure measurements may not be relevant for managing stress urinary incontinence. This study found no correlation between maximum urethral pressure and the abdominal pressure causing incontinence in women or children.
Area of Science:
- Urology
- Gynecology
- Pediatrics
Background:
- Maximum urethral pressure (MUP) is commonly used in managing urinary incontinence.
- However, its clinical relevance, particularly in stress incontinence, is debated.
- Urethral resistance to abdominal pressure is a key factor in continence.
Purpose of the Study:
- To investigate the relationship between MUP and the abdominal pressure causing stress incontinence in women.
- To compare detrusor pressure with abdominal pressure required for urethral leakage in children with myelodysplasia.
Main Methods:
- Measured MUP and abdominal leak point pressure in 125 women with stress incontinence.
- Compared detrusor pressure and abdominal pressure for urethral leakage in 9 children with myelodysplasia.
Main Results:
- In women, abdominal leak point pressure was unrelated to MUP.
- In children with myelodysplasia, detrusor pressure and abdominal pressure for leakage differed significantly.
- These findings suggest MUP has limited correlation with urethral resistance to abdominal pressure.
Conclusions:
- MUP measurements may have limited value in assessing urethral resistance to abdominal pressure in stress incontinence.
- Abdominal pressure and detrusor pressure are not equivalent forces concerning urethral function.
- Further research is needed to clarify the role of pressure measurements in incontinence management.