title: Measurement of total urethral compliance in females with stress incontinence.
abstract: Urodynamic evaluation of stress incontinence has failed to result in consistent diagnostic parameters. Using retrospective female bladder pressure and urine flow data, we evaluated two parameters based on a conductance formula. This formula was derived from fitting a classical fluid dynamic equation to published data of voiding cystourethography. The Area Equivalent Factor-female at maximal flow represents maximal urethral opening and this value further divided by the pressure is the total urethral compliance. A stress incontinent group had a strong trend toward greater maximal urethral opening and total urethral compliance than a continent group. These parameters may, therefore, have potential in the evaluation and understanding of stress urinary incontinence.
authors.affiliation: Rehabilitation Research & Development Center, Hines V.A. Hospital, Hines, Illinois 60141.
authors.forename: J S
authors.initials: JS
authors.lastname: Walter
authors.forename: J S
authors.initials: JS
authors.lastname: Wheeler
authors.forename: C
authors.initials: C
authors.lastname: Morgan
authors.forename: P
authors.initials: P
authors.lastname: Zaszczurynski
authors.forename: M
authors.initials: M
authors.lastname: Plishka
mesh_terms: D000328:Adult; D000368:Aged; D003187:Compliance; D005260:Female; D006801:Humans; D008875:Middle Aged; D012189:Retrospective Studies; D014521:Urethra / Q000503:physiopathology*; D014550:Urinary Incontinence, Stress / Q000503:physiopathology*; D014563:Urodynamics