title: Digital and transvaginal ultrasound cervical assessment for prediction of successful labor induction.
abstract: 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 microg 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).
  
  
  CONCLUSIONS
  Digital examination and transvaginal ultrasound of the cervix predict successful labor induction with reasonable accuracy.
authors.affiliation: Department of Obstetrics and Gynecology, Perinatology Unit, Eskisehir Osmangazi University School of Medicine, Eskisehir, Turkey. mtanir@superonline.com
authors.forename: H M
authors.initials: HM
authors.lastname: Tanir
authors.forename: T
authors.initials: T
authors.lastname: Sener
authors.forename: Z
authors.initials: Z
authors.lastname: Yildiz
mesh_terms: D000328:Adult; D020070:Cervical Ripening / Q000187:drug effects; D002584:Cervix Uteri / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007751:Labor, Induced; D010808:Physical Examination / Q000379:methods; D011237:Predictive Value of Tests; D011247:Pregnancy; D012372:ROC Curve; D014219:Trial of Labor; D014463:Ultrasonography