R. Langer et al., CONTINENCE MECHANISM AFTER COLPO-NEEDLE SUSPENSION FOR STRESS URINARY-INCONTINENCE, Journal of reproductive medicine, 40(10), 1995, pp. 699-702
OBJECTIVE: To determine the mechanism by which continence is restored
following the colpo-needle suspension procedure. STUDY DESIGN: During
1990-1998, 37 women underwent colpo-needle suspension for stress urina
ry incontinence. Urodynamic investigation was performed preoperatively
and 6-12 months postoperatively, and the results of these tests were
compared in order to define the changes that might be responsible for
the restoration of continence. RESULTS: In comparing the preoperative
and postoperative cystometric and uroflowmetric measurements, we found
no significant difference in the values for bladder capacity, residua
l volume pressure rise on filling or standing, maximal urethral voidin
g pressure or peak flow rates. The urethral pressure profiles at rest
did not result in statistically significant differences regarding uret
hral length or urethral pressure. The only such difference postoperati
vely were elevation of pressure. Transmission ratios on coughing and i
n the proximal half of the urethra were Q1, 100.3 (P < .001), and Q2,
100.4 (P < .002), respectively. CONCLUSION: Colposuspension appears to
correct genuine stress incontinence by repositioning the proximal ure
thra in the intraabdominal pressure zone, causing restoration of posit
ive pressure transmission to the proximal urethra.