Background: Doppler ultrasound velocimetry foetal vessels have become established method of antenatal monitoring, allowing non-invasive assessment of foetal circulation. Aims: To determine the usefulness of Doppler velocimetry, based on cerebroplacental ratio (C/U) evaluation, in predicting intrapartum fetal heart rate abnormalities and adverse neonatal outcome in uncomplicated pregnancies from 36 to 40 weeks. Subjects and Methods: this is prospective study include 300 uncomplicated pregnant women, age ranged from 17 to 45 years, with gestational age 36 to 40 weeks. Results: there was significant relation between CPR and adverse neonatal outcome p-value <0.001 with sensitivity, specificity and PPV, NPPV of CPR in detecting neonatal adverse outcome 100%. Conclusion: better prediction of neonatal outcome can be done by C/U ratio