Abnormal Urethral Compliance in Females Diagnosis, Results and Treatment Preliminary Study

Simultaneous recording of pressure and cross‐sectional area in the female urethra: A study of urethral closure function in healthy and stress incontinent women

“…In these patients incontinence may be caused by decreased deformability of the urethral walls possibly due to fibrosis preventing the permanent and the adjunctive closure forces to produce apposition of the urethral walls. This observation is consistent with the findings reported by Susset et al [1983]. The patients with increased elastance seem to represent a special type of GSI and they should possibly have been excluded from the estimated range of elastance in GSI women.…”

“…The urethral elustunce (dP,,$dCA) was found to be of the order 1 cm H20/mm2 all along the urethra in healthy females (IV) which compares favorably with the results reported by Susset et al [1983] and Colstrup [1984a]. This uniform distribution of elastance may seem surprising in view of the presence of the localized intramural sphincter.…”

“…This hypothesis has never been documented and increasing evidence indicates that pressure generation during stress is at least partly actively created [Heidler et al, 1979;Faysal et al, 1981;Constantinou and Govan, 1982;Van der Kooi et al, 1984;Thind et al, 19901. Rigidity of the urethral walls due to fibrosis may prevent closure of the urethral lumen and subsequently lead to incontinence [Moolgoaker et al, 1972;Susset et al, 1974Susset et al, , 1983Gibbon, 1976;Graber, 19771. Causal factors may be ageing and scarification.…”

Urethral pressure reflectometry and pressure profilometry in healthy volunteers and stress urinary incontinent women

“…24,25 The condition has been termed urethral rigidity and the cause has been suggested to be urethral fibrosis. 25 The condition is characterized by a sphincter incompetence where the urethra neither closes nor opens sufficiently. Conventional UPP provides one pressure in the midurethral zone and thus cannot distinguish between patients with low pressure urethra and increased or decreased elastance.…”

The effect of a 6 Fr catheter in women: Are they obstructive?

“…Other explanations are a decrease in urethral compliance, 23 an individual normal variation of flow pattern between studies and an "artificial" voiding pattern created by the procedure 16 (possibly related to numerous other factors, including supraphysiological filling rate, psychogenic inhibition and incomplete relaxation of the external sphincter due to the presence of a foreign material in the urethra). 24 Valentini and colleagues also recently suggested that the lowering of the Q max might be due a break in the detrusor excitation or a compression-like effect due to a urethral reflex.…”