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Urethral instability: related to stress and/or urge incontinence? 1985

R L Vereecken, and J Das

Urethral instability (pressure variations of more than 15 cm. water during bladder filling) was noted in 12 of 34 women with bladder instability and 13 of 139 with a stable bladder. Of the patients 10 had urge, 5 mixed and 8 genuine stress incontinence, while 1 had enuresis and 1 had recurrent cystitis. A clear correlation between urethral pressure variations and electromyographic fluctuations in the anal and/or urethral sphincter was found in 14 of 17 patients. Only urethral pressure variations of more than 35 cm. water are reported as provoking urgency. Different types of pressure fluctuations are described but no fundamental differences or causative factors were found. A nervous rather than a vascular factor is designated as the main cause for urethral instability.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011312 Pressure A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Pressures
D001743 Urinary Bladder A musculomembranous sac along the URINARY TRACT. URINE flows from the KIDNEYS into the bladder via the ureters (URETER), and is held there until URINATION. Bladder,Bladder Detrusor Muscle,Detrusor Urinae,Bladder Detrusor Muscles,Bladder, Urinary,Detrusor Muscle, Bladder,Detrusor Muscles, Bladder
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D014521 Urethra A tube that transports URINE from the URINARY BLADDER to the outside of the body in both the sexes. It also has a reproductive function in the male by providing a passage for SPERM. External Urethral Sphincter,External Urinary Sphincter,Internal Urethral Sphincter,Internal Urinary Sphincter,Internal Vesical Sphincter,Urethral Sphincters,External Urethral Sphincters,External Urinary Sphincters,Internal Urethral Sphincters,Internal Urinary Sphincters,Internal Vesical Sphincters,Sphincter, External Urethral,Sphincter, External Urinary,Sphincter, Internal Urethral,Sphincter, Internal Urinary,Sphincter, Internal Vesical,Sphincter, Urethral,Urethral Sphincter,Urethral Sphincter, External,Urethras,Urinary Sphincter, External,Urinary Sphincter, Internal,Vesical Sphincter, Internal
D014549 Urinary Incontinence Involuntary loss of URINE, such as leaking of urine. It is a symptom of various underlying pathological processes. Major types of incontinence include URINARY URGE INCONTINENCE and URINARY STRESS INCONTINENCE. Incontinence, Urinary

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