Physiological and pathological urethral pressure variations.
From an analysis of 202 patients and a careful literature analysis we conclude that pathological urethral instability should be differentiated from physiological urethral pressure variations by the following criteria: a pronounced amplitude of at least one third of the maximum urethral pressure variations by the following criteria: a pronounced amplitude of at least one third of the maximum urethral closure pressure (usually > 25 cm H2O), a short duration (1-5 s), a simultaneous inhibition of the electromyographic activity in urethral and (or) anal sphincter, and the occurrence of the phenomena starting at the beginning of bladder filling (100 ml).
Vereecken
R L
RL
Department of Urology, St. Pieter University Hospital, Leuven, Belgium.
D004576:Electromyography; D005260:Female; D006801:Humans; D011312:Pressure; D014521:Urethra / Q000502:physiology* / Q000503:physiopathology; D014549:Urinary Incontinence / Q000503:physiopathology; D014563:Urodynamics / Q000502:physiology