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Stress leak point pressure: a diagnostic tool for incontinent children
J Wan1, E J McGuire, D A Bloom
1Section of Urology, University of Michigan, Ann Arbor.
Insights
Stress leak point pressure, a novel urodynamic measure, identifies bladder neck and urethral function in incontinent children. This method is distinct from simple leak point pressure and requires no fluoroscopy.
Area of Science:
- Urology
- Pediatric Urology
- Urodynamics
Background:
- Urinary incontinence in children can stem from various factors affecting bladder and urethral function.
- Assessing bladder neck and proximal urethral function is crucial for diagnosing and managing pediatric incontinence.
- Existing diagnostic methods may be invasive or require specialized equipment.
Purpose of the Study:
- To introduce and evaluate the diagnostic utility of stress leak point pressure (SLPP) in pediatric incontinence.
- To differentiate SLPP from simple bladder leak point pressure (BLPP).
- To assess the feasibility of measuring SLPP using basic urodynamic equipment.
Main Methods:
- Stress leak point pressure was measured in 15 incontinent children (ages 2.5-15 years) during prompted increases in intra-abdominal pressure.
- Measurements were taken using simple urodynamic equipment, without fluoroscopy.
- Data were compared to simple bladder leak point pressure values.
Main Results:
- The mean SLPP was significantly higher (54.7 cm water) than the mean BLPP (19.9 cm water) in the study cohort (p < 0.0001).
- SLPP measurements were achievable with standard urodynamic tools.
- The study demonstrated a clear distinction between SLPP and BLPP.
Conclusions:
- Stress leak point pressure is a valuable diagnostic parameter for evaluating bladder neck and proximal urethral function in pediatric incontinence.
- SLPP offers specific data that complements traditional urodynamic assessments.
- This technique provides a non-fluoroscopic, accessible method for assessing incontinence mechanisms in children.
Abstract:
The stress leak point pressure is the lowest bladder pressure at which leakage occurs during prompted increases in intra-abdominal pressure. The stress leak point pressure is distinct from the simple bladder leak point pressure and can be determined using simple urodynamic equipment without fluoroscopy. In 15 incontinent girls and boys 2.5 to 15 years old the mean stress leak point pressure was 54.7 cm. water (range 11 to 100), whereas the mean leak point pressure was 19.9 cm. water (range 5 to 50, paired t test p < 0.0001). The stress leak point pressure is a useful diagnostic tool that provides specific data on bladder neck and proximal urethral function.