To evaluate the application value of hysterosalpingo-contrast sonography (HyCoSy) combined with normal saline injections into the pelvic cavity in evaluation of fallopian tube patency and fimbria.

Seventy-two patients who were diagnosed with obstruction of one or both sides of the fallopian tube or partial obstruction caused by pelvic adhesions were collected from April 2018 to February 2019 at Zhejiang Provincial People′s Hospital. HyCoSy combined with normal saline injections into the pelvic cavity were performed in all patients, and all of them underwent laparoscopy with chromopertubation within 6 months. Using laparoscopic surgery resultsas the "gold standard", the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of HyCoSy alone and HyCoSy combined with normal saline injections into the pelvic cavity for evaluating obstruction of tubal patency and fimbria were calculated by using a four-grid table.

Laparoscopy with chromopertubation showed that of the 144 fallopian tubes tested, 88 were obstructed and 56 were patent; HyCoSy alone showed that 87 fallopian tubes were obstructed and 57 were patent; HyCoSy combined with normal saline injections into the pelvic cavity showed that 89 fallopian tubes were obstructed and 55 were patent; and normal saline injections into the pelvic cavity alone showed that 80 fallopian tubes were obstructed and 9 were partly obstructed. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of HyCoSy alone in the diagnosis of obstruction of tubal patency were 92.0%, 89.3%, 93.1%, 87.7%, and 91.0%, respectively; the corresponding values of HyCoSy combined with normal saline injections into the pelvic cavity were 100.0%, 98.2%, 99.3%, 98.9%, and 100.0%. The diagnostic accuracy of HyCoSy combined with normal saline injections into the pelvic cavity was significantly higher than that of HyCoSy alone (P<0.05).

HyCoSy combined with normal saline injections into the pelvic cavity has good clinical application value and diagnostic efficiency in fallopian tube patency and fimbria, because it can strengthen the evaluation effect of the fallopian tube fimbria end and the surrounding pelvic environment. HyCoSy combined with normal saline injections into the pelvic cavity can be regarded as an effective and reliable method for etiology screening and diagnosis in infertile women.