Antepartum foetal surveillance techniques is to detect foetal distress so as to prevent fetal morbidity and mortality from utero-placental insufficiency due to maternal risk factors, placental disorders or foetal disease. This study was undertaken to observe the Doppler flow velocity in the umbilical artery, uterine artery and middle cerebral artery compared with NST to predict perinatal outcome in high risk pregnancies (Preeclampsia and IUGR)