Abstract:Objective To study the clinical value of uterine pressure detection combined with four-dimensional hysterosalpingo-constrast sonography (4D-HyCoSy) in the diagnosis of fallopian tubal patency. Methods From January 2015 to December 2016, 104 patients who were diagnosed as tubal infertility in Shangrao People's Hospital of Jiangxi Province were selected as subjects. All patients underwent 4D-HyCoSy test, and contrast injection was used for contrast injection with intrauterine pressure monitoring. The laparoscopic fluid test was used as the gold standard. The receiver operating characteristic (ROC) curve was used to determine the peak value of uterine pressure peak, and the sensitivity, specificity, and ROC of 4D-HyCoSy test and intrauterine pressure-assisted combined diagnosis were compared. The area under the curve. Results Totally 208 fallopian tubes were detected in 104 cases, the coincidence rate of 4D-HyCoSy detection was 72.59%, and the sensitivity and specificity were 78.04% and 85.63%, respectively. According to its function, it was divided into bilateral patency, incomplete patency, one obstruction/ the other one incomplete patency, and bilateral obstruction. Taking the result of laparoscopy as gold standard, the diagnostic coincidence rate was 79.81%, the area under the ROC curve was 0.813. The uterine pressure between bilateral patency, incomplete patency, one obstruction/the other one incomplete patency, and bilateral obstruction showed significant difference (P < 0.05), the corresponding critical values of the peak pressure of the uterine cavity were 24.65, 35.27 and 46.83 kpa, respectively, the area under the ROC curve was 0.781, 0.806 and 0.831. The area under the ROC curve of uterine pressure detection combined with 4D-HyCoSy was 0.942, the sensitivity was 92.31%, both significantly higher than single detection (P < 0.05), the specificity was 80.77%, which showed no significant difference with single detection (P > 0.05). Conclusions Uterine pressure detection combined with 4D-HyCoSy has a high diagnostic value in the diagnosis of fallopian tubal patency, which is worthy of promoting.