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Fetal with fetal growth restriction (FGR) are at increased risk for acidemia, hypoxemia and adverse perinatal outcomes. Placental insufficiency and FGR are the most common and important clinical problems in obstetrics and the leading causes of perinatal morbidity and mortality. Lots of diagnostic procedures are assessed to evaluate FGR, among them ultrasounds are the most relevant ones. Advances in Doppler velocimetry have improved possibility of assessing cerebral blood flow in this pathology This article discusses the clinical case of brain-sparing effect in fetuses with FGR. Assessment of the fetal cerebral circulation provides important information on the hemodynamic changes associated with chronic hypoxia, intrauterine growth restriction and their clinical management. 



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