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Sonographic cervical length as a predictor of type of delivery after induced labor
Ana María Gómez-Laencina1, Cristina Pages García, Laura Villanueva Asensio
1Gynecology and Obstetrics Department, Hospital Reina Sofía, Avd. Intendente Jorge Palacios, 1, 30003 Murcia, Spain. aglaencina@gmail.com
Purpose:
This study was undertaken to evaluate the comparative value of sonographic cervical length and the Bishop score in predicting the type of delivery after induced labor.
Methods:
The Bishop score was determined by digital examination and cervical length by transvaginal sonography in 177 women.
Results:
The best cut-off points for predicting type of delivery found with ROC curves were 25.2 mm for cervical length and 5 for the Bishop score. The Bishop score was not predictive of type of delivery. Cervical length was related to type of delivery in women with Bishop score ≤5. A logistic regression model showed that only cervical length ≥25.2 mm, parity, and body mass index significantly predicted the likelihood of cesarean delivery.
Conclusions:
Our study suggests that both Bishop score and sonographic cervical length can contribute to predicting type of delivery after labor induction, but cervical length is a better predictor of the risk of cesarean delivery.
