- Vaginal infection by B streptococcus or in urinary sample during actual or anterior pregnancy Meconium fluid amniotic Contraindication of vaginal delivery (placenta praevia, …) Temperature > 38,2°C Suspicion of chorio-amnionitis among Newton requirements Intra-uterine growth restriction < 3rd percentile with Doppler abnormalities History of cesarean and uterine scare Suspected genital herpes infection Known VIH seropositivity (confirmed by blood serology) Fetus with suspected severe congenital abnormalities Pathological fetal heart rate (see appendix 1) Contra-indications to Propess®, Cook® Cervical Ripening Balloon, Oxytocin Women under guardianship or trusteeship