Value of UVJ-M in the diagnosis of SUI in late pregnancy and postpartum

Stress urinary incontinence (SUI) is a common pelvic floor dysfunctional disorder in which leakage of urine occurs when there is abdominal pressure. The aim of the present study was to determine the value of stress urinary incontinences (SUIs) in late pregnancy and postpartum via detection of the mobility of the ureterovesical junction (UVJ-M) by using transperineal ultrasound. The study involved the continuous and random selection of 120 cases of early pregnant women and single births. The patients were divided into the SUI and non-SUI groups dependent on whether there was leakage of urine when abdominal pressure in the form of coughing, laughing and sneezing, was increased. UVJ-M was measured, the receiver operating characteristic (ROC) curve was drawn up and the threshold value was predicted. The results showed that, the SUI prevalence was 7.5 (9/120), 22.5 (27/120), 43.3 (52/120), and 5.8% (7/100), respectively, in 34, 36, and 38 gestational weeks, and 6 weeks after delivery. The SUI prevalence gradually increased with the gestational weeks, and differences were statistically significant. UVJ-M values increased with the gestational weeks, at 3.43±1.52, 6.77±0.98 and 2.35±1.04 mm, respectively. Statistically significant differences were identified. Results of the ROC analysis, based on measurement of UVJ-M between the late pregnancy and non-SUI groups, revealed that the optimal threshold was 8.66 mm, corresponding to a sensitivity of 89.5% and specificity of 66.7%. In conclusion, UVJ-M ≥6.59 mm was identified as the predicted value of SUI during late pregnancy, and UVJ-M ≥8.66 mm the predicted value of SUI after delivery.