A comparison of urodynamic parameters and lower urinary tract symptoms in urodynamic genuine stress incontinence women with or without stress urinary incontinence.

BACKGROUND The aim of this study was to investigate the urodynamic parameters and lower urinary tract symptoms (LUTS) of women with urodynamic genuine stress incontinence (GSI). METHODS A cross-sectional study involving 3323 women with LUTS was conducted. We recruited 1261 women with urodynamic GSI and were further grouped as with or without symptomatic stress urinary incontinence (SUI). The LUTS and urodynamic measurements between the two groups were analyzed and compared. RESULTS Women with symptomatic SUI had a greater maximal flow rate, larger voided volume, larger maximal cystometric capacity, and smaller maximal urethral closure pressure (MUCP) during both rest and stress. The amount of urine leakage during the 1-hour pad test of GSI women with symptomatic SUI was much greater than women without symptomatic SUI (26.0 g vs 7.2 g, p < 0.001). The significant differences in other lower urinary tract symptoms including nocturia, diurnal frequency, incomplete emptying, poor stream, urgency, urge incontinence, and post-void dribbling in women without symptomatic SUI were all less than women with symptomatic SUI. CONCLUSIONS The urodynamic parameters and LUTS between the GSI women with or without symptomatic SUI are different. Approximate 15% of the GSI women do not complain of symptomatic SUI. The lower urinary tract symptoms of women with GSI without symptomatic SUI were less prominent than for the GSI women with symptomatic SUI.