The study cohort comprised of 219 patients prospectively recruited before undergoing induction of labour. A group of 133 women underwent induction of labour with dinoprostone and a group of 86 women underwent induction of labour with extra-amniotic Foley catheter. On multivariate logistic regression analysis, when including only induction of labour with dinoprostone, MCA PI percentage value based on gestational age was associated with NRFHR after adjustment for patient age, nulliparity and gestational age (aOR 0.26, 95%CI 0.07-0.90, p = 0.034). As MCA PI percentage was higher, the probability of NRFHR was lower. Conclusions: This study found a significant difference in pre-induction MCA PI percentage values when examining the occurrence of NRFHR in patients undergoing induction of labour with dinoprostone. We infer that lower MCA PI values are a reflection of lesser placental reserve and as a result higher incidence of non-reassuring fetal heart tracing. VP54.02 Prelabour short-term variability in fetal heart rate by computerised cardiotocogram and maternal fetal Doppler indices for the prediction of labour outcomes

What are the novel findings of this work?Abnormal uterine artery pulsatility index (UtA-PI) in early labor is associated with an increased incidence of obstetric intervention for suspected intrapartum fetal compromise and adverse perinatal outcome in low-risk pregnancies at term. What are the clinical implications of this work?UtA-PI may be considered for triage in early labor to identify pregnancies at risk of intrapartum hypoxic complications and allow tailored management of labor.