Vaginal wall sling for anatomical incontinence and intrinsic sphincter dysfunction: efficacy and outcome analysis.

Purpose: A prospective cohort study was done to determine the efficacy and clinical outcome of a new technique for anterior vaginal wall sling construction to treat urinary incontinence due to intrinsic sphincter dysfunction or anatomical incontinence.
Materials and Methods: Preoperative evaluation included lateral cystography, video urodynamics, cystoscopy and incontinence staging. Postoperative subjective and objective staging outcome measures were prospectively assigned at predetermined regular intervals by a third party.
Results: Of the patients 95 had intrinsic sphincter dysfunction and 65 had anatomical incontinence. The repair failed in 7% of the 160 patients who had recurrent incontinence during followup and 9% had de novo urgency incontinence. Time to failure comparing patients with intrinsic sphincter dysfunction and anatomical incontinence was modeled using Kaplan-Meier survival curves, and the log rank test showed no significant difference between the groups (p > 0.05). Logistic regression covariates revealed no significant predictive factors for postoperative failures. Preoperative patient age was the only predictive factor for de novo instability (logistic regression model p < 0.05).
Conclusions: Our initial results indicate that the 2 groups are indistinguishable to date based on current clinical and experimental statistics except for time to full recovery of postoperative voiding and incidence of postoperative instability (regression model p < 0.05).