Digital and transvaginal ultrasound cervical assessment for prediction of successful labor induction

Tanir H. M. , Sener T., Yildiz Z.

International Journal of Gynecology and Obstetrics, vol.100, no.1, pp.52-55, 2008 (Journal Indexed in SCI Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 100 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1016/j.ijgo.2007.07.014
  • Title of Journal : International Journal of Gynecology and Obstetrics
  • Page Numbers: pp.52-55
  • Keywords: Labor induction, transvaginal ultrasound, bishop score, cervical length, BISHOP SCORE, SONOGRAPHIC MEASUREMENT, FETAL FIBRONECTIN, CESAREAN DELIVERY, LENGTH, TERM, WOMEN


Objective: To compare the values of preinduction transvaginal cervical length measurements and Bishop score to predict successful labor induction. Methods: A prospective, observational trial of nulliparous women undergoing labor induction. Inclusion criteria were gestational age between 36 and 42 weeks, singleton cephalic presentation of the fetus, and intact membranes. Preinduction cervical ripening was performed using 25 μg intravaginal misoprostol (PGE1), repeated every 4 h, up to a maximum of 3 doses. Induction was subsequently continued by oxytocin and amniotomy. Results: A total of 43 women met the inclusion criteria. Mean preinduction cervical length for women with successful or failed labor induction was 26 mm (95% Confidence interval [CI], 27-32) and 34 mm (95% CI, 33-38), respectively (P = 0.002). Mean Bishop scores for successful and failed induction groups were 5.4 (95% CI, 5.2-6.2) and 3.1 (95% CI, 2.8-3.5), respectively (P = 0.003). Conclusion: Digital examination and transvaginal ultrasound of the cervix predict successful labor induction with reasonable accuracy. © 2007 International Federation of Gynecology and Obstetrics.