Purpose: to analyze the correlation between Valsalva leak point pressure and maximum urethral closure pressure and clinical symptoms in women with stress urinary incontinence. Methods: we analyzed retrospectively 164 patients with urodynamic diagnosis of stress and mixed urinary incontinence established by the Urogynecology and Vaginal Surgery Sector of UNIFESP/EPM. All patients were submmited to medical interview, physical examination and urodynamic study. Patients were divided into groups according to the subjective degree of stress urinary incontinence. Valsalva leak point pressure (VLPP) was measured with a vesical volume of 200 mL. Urethral profile was determined using a flow catheter number 8 with measurement of maximum urethral closure pressure (MUCP). Data were compared by chi², ANOVA and Tukey tests. Results: mean age was 51.2 years (19-82), 76 women (47.2%) were in menacme and 85 (52.8%) in postmenopausal status. Mean parity was 3.9 (0-18). The exact test for trend demonstrated a statistically significant (p<0.0001) correlation between the number of patients with VLPP of 60 cmH2O or less and clinical complaints. The group with severe leakage had mean VLPP of 69.1 cmH2O. The group with moderated leakage had mean VLPP of 84.6 cmH2O and the group with mild leakage had mean VLPP of 90.6 cmH2O. Conclusions: VLPP correlated with the subjective degree of stress urinary incontinence. Higher grades of stress urinary incontinence had a higher likelyhood of a low VLPP. MUCP did not correlate with clinical complaints.
Stress urinary incontinence; Valsalva maneuvre; Urethral profile; Clinical evaluation
