Pubovaginal sling procedures are being performed with increased frequency for stress urinary incontinence. The vaginal wall sling was introduced in 1989 by Raz et al., and its success rate has been reported as being 61%-100%. A number of recent studies have identified that some patient factors may influence the likelihood of a successful outcome. In the present study, we evaluated whether preoperative Valsalva leak-point pressure and urethral pressure profile can be used as predictors of success after surgery. We identified the preoperative characteristics of 58 women who underwent an isolated in situ anterior vaginal wall sling procedure by the same surgeon. Patients' ages, previous anti-incontinence procedures, hormone replacement status and previous hysterectomies were determined and patients underwent urodynamics, including cystometry, measurement. of the Valsalva leak-point pressure and urethral pressure profile (maximal urethral pressure). After the vaginal wall sling procedure, success was defined as a significant improvement in stress urinary incontinence symptoms or no symptoms at all.