دور دوبلر الشريان السري في تشخيص نقص النمو الجنيني الناتج عن سبب و عائي

Intra-uterine growth retardation is considered as a real clinical problem because of its high incidence and prenatal and postnatal complications. Of the numerous causes of IUGR is the vascular cause which can be detected by the umbilical artery Doppler. The pathological changes in umbilical artery Doppler are caused by the increased resistance of the placental vascular bed which is expressed by the increased resistance index RI. In Doppler waveform, the diastolic wave may be decreased, absent, or reversed, The last two cases are of high risk and bad prognosis. Doppler diagnoses and monitoring of these high risk pregnancies aim to decrease prenatal and postnatal fatalities.