Intrapartum prediction of emergency delivery due to non-reassuring fetal status at 40 weeks' gestation in low-risk pregnancies: contribution of Doppler parameters, maternal history, and intrapartum clinical characteristics.

Objective: To assess the added value of Doppler parameters, maternal history, and intrapartum clinical characteristics for the prediction of emergency delivery due to non-reassuring fetal status in low-risk pregnancies.

Methods: This was a prospective cohort of low-risk pregnancies undergoing ultrasound assessment at 40 weeks' gestation within 7 days of delivery. The main outcome was emergency cesarean section due to non-reassuring fetal status.