Aspects on the Anatomy of the Female Urethra with Special Relation to Urinary Continence

Huisman, Ad B.

doi:10.1159/000407971

Cited by 103 publications

(76 citation statements)

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“…However, the differences between the pressure responses obtained at the three urethral sites of measurement were insignificant, indicating an essentially identical amount and composition of muscular and connective tissue taking part in the urethral resistance tO dilatation. This is in accordance with anatomical data [37,41,43,44].…”

Section: Pmaxura(cat) = Po + Dp/dca X Dca/dt X T + Dp/ D(dca/dt) X Dsupporting

confidence: 92%

“…The anatomy of the female urethra and bladder neck has been studied in great detail in relation to the urinary continence mechanism [34][35][36][37][38][39][40][41]. The structures forming the urethral tube are mainly composed of collagen fibers and smooth muscles, both of which are predominantly longitudinally arranged [37,[42][43][44].…”

Section: Anatomy and Physiologymentioning

confidence: 99%

“…The structures forming the urethral tube are mainly composed of collagen fibers and smooth muscles, both of which are predominantly longitudinally arranged [37,[42][43][44]. An abundant vascular plexus exists in the submucosal layer [37,45].…”

Section: Anatomy and Physiologymentioning

confidence: 99%

“…However, the facts that the female urethra opens without or at very low pressure during micturition [12,31,54], and that the connective tissue fibers are predominantly longitudinally arranged [37,43], indicate that the contribution of this tissue component to pressure generation is insignificant.…”

Section: Anatomy and Physiologymentioning

confidence: 99%

“…The smooth muscles and connective tissue in the urethral wall are primarily longitudinally arranged [37,43,44]. During a urethral dilatation the strain of a longitudinally arranged fiber is much less than that of a circular one.…”

Section: Mathematical Analysismentioning

confidence: 99%

See 4 more Smart Citations

An analysis of urethral viscoelasticity with particular reference to the sphincter function in healthy women

Thind

1995

Int Urogynecol J

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Urine ingression into the urethra involves stretching of the fibers, resulting in a pressure increase. This study describes the pressure response following a rapid urethral dilatation. A probe for simultaneous recording of cross-sectional area (dilatation) and pressure was used. The urethral dilatations were induced by a gravitationally operated pump. Fifteen healthy women were studied. The pressure response (viscoelastic reaction) is a steep increase with the maximum at the end of dilatation. The maximum pressure is followed by a pressure decay (stress relaxation) over the next few seconds. The pressure response was highly dependent on the size and rate of dilatation but not on the urethral site of measurement. The median pressure response to a dilatation of 10 mm 2 at a rate of 150 mm2/s (chosen arbitrarily within the physiological range) is 45 cmH20. The pressure response may account for 25% of the urethral resistance to dilatation.

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Section: Pmaxura(cat) = Po + Dp/dca X Dca/dt X T + Dp/ D(dca/dt) X Dsupporting

confidence: 92%