Twenty-minute pad test: Comparison of infusion of 250 ml of water with strong-desire amount in the bladder in women with stress urinary incontinence

ObjectiveThe objective was to compare the sensitivity of the 20-min pad test by infusion of 250 ml of water with the strong-desire amount in the bladder in women with stress urinary incontinence (SUI).Study designEighty-three women with SUI were enrolled between November 2005 and January 2006. The 20-min pad test by infusion of 250 ml of water was performed before urodynamic study (UDS). The strong-desire amount pad test was done after UDS. The results were analyzed by Pearson's χ2 and Wilcoxon's signed-rank tests.ResultsThe sensitivity by infusion of the strong-desire amount was better than infusion of 250 ml of water in the 20-min pad test (P < 0.001). In the quantitative study, the two pad tests had fair agreement and the pad weight results of the infusion of the strong-desire amount were statistically higher than the infusion of 250 ml of water (P = 0.0004).ConclusionsThe infusion of the strong-desire amount had better sensitivity measured by the 20-min pad test in women with SUI compared with infusion of 250 ml of water in the bladder.