Sonographical predictive markers of failure of induction of labour in term pregnancy

Abstract

Predictive markers of failure of induction of labour in term pregnancy were evaluated. A prospective study including 245 women attending induction of labour was performed. The inclusion criteria were singleton pregnancies, gestational age 37-42 weeks and the main outcomes were failure of induction, induction to delivery interval and mode of delivery. Women with a longer cervical length prior to induction (CLpi) had a higher rate of failure of induction (30.9 ± 6.8 vs. 23.9 ± 9.3, p < .001). BMI was higher and maternal height was lower in the group of caesarean section compared to vaginal delivery (33.1 ± 8 vs. 29.3 ± 4.6, 160 ± 5 vs. 164 ± 5, p < .001, respectively). A shorter CLpi correlated with a shorter induction to delivery interval (R Pearson .237, p < .001). In the regression analysis, for failure of induction the only independent predictor was the CL prior to induction. Therefore, the CLpi is an independent factor for prediction of failure of induction of labour.

Prediction model for successful induction of labor by cervical strain elastography diagnosed at late-term pregnancy in nulliparous women: a prospective cohort study

“…The functional cervical length can be measured using the E-Cervix system and a four-point ROI that traces the endocervical lining of a straight or curved cervix [ 27 ]. The accuracy and repeatability of cervical length measurements have been improved using semi-automatic systems, and cervical length has become a valuable parameter for predicting the success of IOL [ 13 , 28 – 31 ]. Hamza et al reported that a cervical length of 25 mm, the presence of cervical funneling, and a shorter cervical length were significantly associated with successful IOL within 24 h [ 28 ].…”

“…Several studies have used transvaginal ultrasound to measure the cervical length and predict the success of IOL [ 13 – 15 ]. These previous studies reported that a longer cervical length is associated with an increased risk of unsuccessful IOL.…”

ACR Appropriateness Criteria® Assessment of Gravid Cervix

“…Studies that are more recent also report conflicting data. In one study, a shorter CL prior to induction was associated with a shorter interval from induction to delivery, and a CL 28 mm was associated with increased risk of failure of induction [50]. CL was also reported to be predictive of vaginal delivery and induction-to-delivery interval [20,51], although CL was a poor predictor of cesarean delivery [20].…”

Failed induction of labor and associated factors among women delivered in Jigjiga University Sheik Hassan Yabare Referral Hospital: a cross-sectional study

“…Perhaps, this procedure may sometimes fail to generate regular contractions and cervical change after arti cial rupture of membrane and at least 24 hour of oxytocin use [4,10,[12][13][14][15]. According to previous studies conducted in Ethiopia and elsewhere in Africa, the magnitude of failure of induction of labour (IOL) was signi cantly higher [16,17].…”