observational study conducted at academic perinatalcenter that investigates relationships between antenatal testing parameters and outcome in IUGR fetuses Patients who give written consent to participate in the study undergo a uniform antenatal assessment protocol that includes umbilical artery (UA), middle cerebral artery (MCA) and ductus venosus (DV) Doppler ultrasound studies as well as detailed fetal echocardiography and five-component biophysical profile score.