ISSN:
1433-3023
Keywords:
Urethral compliance
;
Urethral modeling
;
Urinary diagnostics
;
Urodynamics
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Urodynamic evaluation has been helpful in the diagnosis of stress incontinence in female patients. We evaluated two new parameters using standard urodynamic measures that were recorded during micturition. These two parameters were obtained by fitting a classic fluid dynamic equation for flow through short rigid tubes to published data of voiding, videourodynamics. This formula, an area equivalent factor female (AEFf) indicates urethral cross-sectional opening area based on bladder pressure and flow measures. The first parameter, maximal urethral opening or maximal AEFf, was observed at maximal flow, and this value further divided by the detrusor pressure determined the second parameter, the urethral total compliance. A preliminary retrospective study was conducted using detrusor pressure and urine flow data from stress incontinent (n=14) and continent (n=5) female patients. There was a trend toward greater maximal urethral opening at 14.2±5.9 mm2 in the stress incontinent group compared to the continent group, 9.2±2.9 mm2 (p=0.09). The stress incontinent group also showed a strong trend (p=0.09) toward greater total compliance values of 0.78±0.5 mm2/ cmH2O, compared to 0.35±0.2 mm2/cmH2O in the continent group. These parameters may have potential in the evaluation and understanding of stress incontinence.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00387381
