Posterior cervical angle and cervical length in predicting the successful induction of labour in nulliparous woman

Document Type : Original Article

Authors

1 Department of Obstetrics and Gynecology, Faculty of Medicine, Ain-Shams University, Cairo, Egypt

2 Obstetrics and gynecology department,Ain Shams University, cairo

Abstract

Objective:To assess the value of pre-induction sonographic assessment of the posterior cervical angle (PCA) and cervical length in the prediction of successful induction of labor (IOL).
Patients and Methods:The present prospective observational study included IOL candidates who had their PCA and cervical length assessed by transvaginal ultrasonography and the Bishop score at the Obstetrics and Gynecology Department, Ain-Shams Maternity Hospital, Cairo, Egypt, from 1st November 2018 to 31st May 2019. The accuracy of these tests in predicting successful IOL (defined as vaginal delivery) was compared.
Results: The analysis included 41 women with successful IOL and 29 women with unsuccessful IOL. The suggested cutoffs for the prediction of successful IOL were a PCA of more than 100°, a cervical length of less than 31 mm, and a Bishop score of more than four. The areas under the receiver operating characteristics curves for these three measures were not significantly different. However, a PCA of more than 100° had the best sensitivity (87.80%), specificity (86.21), positive predictive value (90%), negative predictive value (83.3%) compared with the other two predictors.
Conclusion: Posterior cervical angle had the best accuracy in predicting successful induction of labor compared with the cervical length and the Bishop score

Keywords

Evidence Based Women's Health Journal
Volume 10, Issue 1
February 2020
Pages 31-36

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