ABSTRACT
Background: The wide uterocervical angle (UCA) has been identified as a predictor of preterm delivery, and the goal of this study is to see how accurate UCA is at predicting spontaneous preterm birth in the second trimester. Objective: The aim of study is early prediction of preterm labor by uterocervical angle measurement using transvaginal sonography (TVS) in the second trimester of women at low risk for spontaneous preterm birth (SPB). Patients and Methods: This is a prospective cohort study including seventy pregnant women in the second trimester (16-28weeks). They were classified into to preterm (group 1) and term (group 2) according to delivery of 28 and 42 women in each group, respectively. TVS was performed for all participants with measuring UCA. Results: This study shows that all ultrasonographic parameters showed the mean UCA was 124.74±19.69 and 85.95±8.32 degrees in preterm and full-term delivery, respectively, it had statistically highly significant difference (p