Características clínicas y urodinámicas de las mujeres con detrusor hipoactivo

Objective: To describe the clinical and urodynamic features of the hypoactive detrusor (DU) in women. Methods: Cross sectional comparative study between two groups of women with lower tract urinary symptoms. Group 1 were patients with Pdet Qmax 30 or with the bladder emptying efficiency (BVE) criteria, and Group 2 were patients without DU. Central tendency measures and proportions were used to report results and parametric tests were performed to compare groups. Results: 155 patients were included, 44 with DU (Group 1) and 111 without DU (Group 2); mean age was 60.8 ± 16.3 and 55.7 ± 13.4 respectively (p=0.0468). Nocturia (p=0.0061) and micturition effort (p=0.000) were the only variables identified in the bivariate analysis who achieved statistical significance. Mean Watts factor (WF) was 3.2 ± 1.0 and 6.0 ± 2.2 in Group 1 and 2, respectively (p=0.000), while mean projected isovolumetric pressure 1 (PIP1) was 28.0 ± 7.5 and 45.9 ± 11.2, respectively (p=0.000). The multivariate analysis identified age above 60 years, nocturia and micturition effort associated with DU. Conclusion: Urodynamic parameters such as PIP1, BCI, BVE and WF showed significant difference in the bivariate analysis, WF<5 and BCI <80 are best predictors of DU.