الفهرس 
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Abstract
Doppler flow fetal hemodynamic status assessment is increasingly being used to predict high risk pregnancies that may result in adverse fetal outcomes by providing information beyond ultrasound-based fetal growth assessment alone. Aim and objectives; to analyze the significance of uterine perfusion (UtA-PI) and fetal redistribution (CPR) in predication of late onset IUGR in high risk pregnant women. Subjects and methods; This a prospective randomized control study was done from January 2021 to December 2022 firstly at the obstetrics and gynecology department at Port-Said maternity hospital (previously named Port-said general hospital) then due to lack of cooperation of the Port-Said maternity hospital, we conducted it at ElShatby Maternity University Hospital after the approval of the ethical committee of Faculty of Medicine- Port-said University. Result; 69.7% were primigravida and 30.3% were multipara; their age ranged between 18-38 years. 68.1% were born via CS. 50.4% have HTN, 22.7% have DM, 11.8% have SLE, 5.9% have CKD, 5% have anti-phospholipid $, while 4.2% have vasculopathy. At the time of assessment GA ranged between 32-33 weeks and fetal weight ranged between 1123 – 1476 gm. IUGR was statistically significant more frequent in primipara and have statistically significant higher rate of CS than normal weight group. There is no statistically significant variance among IUGR & normal weight neonates concerning the maternal age or BMI. UtA RI and UtA PI are statistically significant higher in IUGR than normal weight group either measured from right or left side. Conclusion; with intrauterine growth restriction and a high-risk pregnancy, the cerebro-placental ratio is not a reliable predictor of perinatal outcome.