RESUMO
To compare the ratio of middle cerebral artery to umbilical artery blood velocity waveform's systolic/diastolic [MCA/UA] S/D ratio and biophysical profile as regard their ability to predict adverse outcome in post-term pregnancies. A prospective observational study was done in Antenatal clinic and Emergency Department of Obstetrics and Gynecology of Sohag University hospital. Sixty pregnant women were recruited in the study fulfilling the selection criteria of being 42 weeks or more calculated from the first day of the reliable last menstrual period, having a singleton fetus in the vertex presentation. All accepted to participate in the study after explaining its nature. All cases underwent antepartum testing every other day for biophysical profile and Dopplcr ultrasound examination of the fetal middle cerebral artery and umbilical artery. Adverse post-term related outcome was defined as perinatal death, occurrence of mcconium aspiration syndrome, cesarean delivery for fetal distress, admission to the neonatal intensive care unit and low Apgar at 1 and 5 minute. The predictive values of a middle cerebral artery to umbilical artery ratio