Mechanical Dilation of the Cervix in a Scarred Uterus

Inclusion Criteria: * Female ≥ 21 years of age at booking visit * 1 previous uncomplicated lower segment caesarean section (CS) * Aiming for TOLAC * Written informed consent (and assent when applicable) obtained from subject or subject's legal representative and ability for subject to comply with the requirements of the study * Singleton pregnancy * Gestational age \>37 weeks * Understands risk of TOLAC * Eligible for induction of labour for the standard obstetric indications, including post-date or post-term pregnancies at 40-41 completed weeks of gestation * Unfavourable Bishop's Score ≤ 5 requiring cervical priming * Previous uterine surgery, including simple myomectomy, where there is no contraindication to TOLAC * Reactive CTG pre-induction * Ruptured membranes Exclusion Criteria: * Refusal to participate * Women with 2 or more previous CS * Previous classical or lower segment vertical incision, or inverted T or J incision in the previous caesarean delivery * Previous uterine surgery with contra-indication to future TOLAC * Maternal contraindication for vaginal delivery * Fetal contraindication for vaginal delivery or major fetal abnormality * Malpresentation or cord presentation * Placenta praevia \<20mm from internal os * Chorioamnionitis * Antepartum haemorrhage of undetermined origin AND deemed a contraindication for TOLAC * Suspected fetal macrosomia (estimated weight on ultrasound \>4kg) AND deemed a contraindication for TOLAC * Congenital uterine abnormality * …