Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter June 3, 2009

Body mass index, Bishop score, and sonographic measurement of the cervical length as predictors of successful labor induction in twin gestations

  • Kyo-Hoon Park , Joon-Seok Hong , Woong-Sun Kang , Dong-Myung Shin and Shi-Nae Kim

Abstract

Aims: To evaluate the predictive value of body mass index (BMI), Bishop score, and sonographic measurement of cervical length for predicting successful labor induction (defined as an ability to achieve the active phase of labor corresponding to a cervical dilatation of ≥4 cm within 12 h of initiating oxytocin) in near-term twin gestations.

Methods: This prospective, observational study enrolled 72 consecutive women with twin gestations at >36.0 weeks' gestation who were scheduled for induction of labor. Transvaginal ultrasound for measurement of the cervical length was performed and the Bishop score was determined by digital examination. The BMI was calculated based on the weight and height at the time of induction.

Results: Labor induction was successful in 63% (45/72) of women. The mean BMI was significantly lower in women who had successfully induced labor, but no significant differences existed with respect to the mean cervical length, median Bishop score, proportion of parous and nulliparous women, and the mean total birth weight of the twin pairs between the two patient groups. Multiple logistic regression demonstrated that only BMI provided a significant contribution in predicting successful labor induction.

Conclusions: BMI independently predicted the success of labor induction in twin gestations but the sonographic measurement of the cervical length and Bishop score had poor predictive values for successful induction.


Corresponding author: Kyo-Hoon Park, MD, PhD Department of Obstetrics and Gynecology Seoul National University Bundang Hospital 300 Gumi-dong Bundang-gu Seongnam-si Gyeonggi-do 463-707 Korea Tel.: +82-31-787-7252 Fax: +82-31-787-4054

Received: 2008-10-31
Revised: 2009-3-11
Accepted: 2009-3-26
Published Online: 2009-06-03
Published Online: 2009-06-03
Published in Print: 2009-09-01

©2009 by Walter de Gruyter Berlin New York

Downloaded on 19.3.2024 from https://www.degruyter.com/document/doi/10.1515/JPM.2009.099/html
Scroll to top button