Can uterocervical angle and cervical length determine the success of induction of labor in late-term and post-term nulliparous pregnant women?

Purpose: The aim og this study was to evaluate the role of uterocervical angle (UCA) and cervical length (CL) in predicting the success of induction of labor before induction was performed in late term and post-term pregnancies. Materials and Methods: This retrospective study was carried out between January 2018 and April 2020, in Medipol University based on the data about 260 late-term and post-term nulliparous pregnant women who underwent induction of labor. UCA and CL values in pregnant women were assessed just before the induction was performed. Our study population was assigned into two groups: successful IoL group (group1) and failed (group 2) IoL group. The primary outcome of the study is the effectiveness of UCA and CL in predicting successful induction of labor (latent phase duration <= 720 min). Results: While the mean UCA was 102.17 +/- 4.26 degree in the successful labor induction group, it was 94.25 +/- 7.141 degree in the unsuccessful group. While the mean CL was 27.85 +/- 3.5 mm in the successful labor induction group, it was found as 31.73 +/- 2.71 mm in the unsuccessful group. There was a statistically significant difference between the groups in terms of mean values for the CL and UCA. Both the UCA and the CLsignificantly predicted the duration of the prolonged latent phase. Conclusions: This study indicated that both the UCA and CL measurements had a significant predictive value in predicting successful induction of labor and normal birth in late term and post-term nulliparous pregnant women.