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Abstract
Pre-eclampsia is one of the most important primary
causes or maternal and perinatal mortality and morbidity. one of
the most important theories of preclampsia is an abnormal
placentation by inadequate trophoblastic invasion of the
maternal spiral arteries, which halt their dilatation & reduce the blood flow through the placenta affecting the pregnancy outcome.
Doppler examination makes it possible to record noninvasively the blood flow velocity waveforms of the uterine
arteries. There is little diastolic flow in the uterine artery in non
gravid uterus. As normal gestation progresses there is a progressive DROP in impedance in the uterine artery in the second trimester as evidenced by increased diastolic flow velocity with Doppler scanning and disappearance of the uterine artery notches by 22 to 26 weeks of gestation.
Clinically if the Doppler indices of the uterine artery after 22-26 weeks of gestation are still high or if an early diastolic notch exists the situation indicates that there is an increase in
the peripheral vascular resistance and is predictive of adverse perinatal outcome. As perinatal death, preterm delivery and severe growth retardation.
The aim of this work is to evaluale the value of colorcoded Duplex ullrasonography of the ulerine arteries in prediction of pregnancy induced hypertension and some severe adverse outcome complicating pregnancy.