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Pregnancy and labor are great experiences in the life of a woman. At the end of the 20th century, the mortality ratio of infants has fallen from more than 90% to 7.2% per live birth (1). Studies have shown that a death rate of 1.2-1.3 can be prevented in fetuses and neonates(2). Today, the diagnosis of high-risk pregnancies is one of the important issues in the field of modern pregnancy and labor. Fetal growth during pregnancy is determined by its anthropometric measures, especially the weight. In fact, the birth weight of a baby is the most important determinant of disease or death (3). A low birth weight baby is considered as a baby with a weight less than 2500 g at birth. These infants are 40 times more likely to be exposed to neonatal mortality than normal babies, who have a birth weight of more than 2500 g (4). Low birth weight babies are divided into 2 groups as follows: The first group includes premature infants who do not have enough gestational time to develop and grow. The second group includes termed infants, that is, the babies whose gestational age is 37 weeks or more. These babies, despite having enough time to grow, are very small at birth and have a birth weight less than 2500 g (5). Intrauterine growth restriction (IUGR) is a significant part of the present mortality. The primary goal of the prenatal care is to diagnose conditions and to choose the appropriate and optimal treatment for the mother and the fetus. The management of complicated pregnancies from IUGR remains a major challenge in maternity and childbirth. The complications of IUGR are remarkable for the mother and the fetus (6–11). Babies with birth weights less than the 10th percentile of weight for the gestational age, according to the sex are called the IUGR (12,13). Ultrasound Doppler sonography is a supplement to the diagnosis of physiological disorders (14). Color Doppler sonography of the fetal brain is used to investigate the incidence of uterine growth retardation, fetal distress, asphyxia, anemia, pregnancy immunization, twin to twin transfusion syndrome (TTTS), and the examination of the middle cerebral artery, usually without regard to its various parts. Uterine placental blood flow can be detected by Doppler sonography, a non-invasive method. This ultrasound is very important in a high-risk pregnancy. The umbilical Doppler is considered as one of the methods for assessing fetoplacental blood flow, so cord blood flow can be considered as a predictor of high-risk pregnancies without any unnecessary invasive interventions of midwifery. It has also led to a reduction of multiple complications, including perinatal mortalities, Abstract Objectives: Cerebroplacental ratio (CPR) is a useful tool in differentiating at-risk non-SGA fetuses. The first CPR reported by Arbeille et al quantifies the redistribution of the cardiac output. In this study, we investigate CPR in non-SGA fetuses. Materials and Methods: This descriptive-analytic study was carried out in Ahvaz from January 1, 2016 to January 1, 2017. In this study, CPR was evaluated in 230 pregnant women at 28 to 38 weeks of gestation, with the exception of pregnant women with SGA and multiple pregnancies. In this study, factors such as maternal age, parity (nullipara and multipara), history of abortion, cesarean delivery or vaginal delivery, an estimate of fetal weight (EFW), history of stillbirth, pregnancy conceived through assisted reproductive technology, and NT values were investigated. Results: In this study, of 230 pregnant women with an EFW more than the 3rd percentile and singleton pregnancy, there were 22 women with a CPR below the 5th centile. There was no relationship between the fetal CPR and the maternal age, the number of maternal cesarean section, the number of mother’s vaginal deliveries and the parity, history of stillbirth, pregnancy conceived through assisted reproductive technology and NT values in the data analyzed. Conclusions: In this study, 9.6% of the non-SGA fetuses had abnormal CPR (less than 5 percentile). There is no relationship between CPR and maternal age, parity (nullipara and multipara), history of abortion, cesarean section delivery or vaginal delivery, EFW, history of stillbirth, pregnancy conceived through assisted reproductive technology, and NT values.

Cerebroplacental Ratio in Small for Gestational Age Fetuses at 28 to 38 Weeks of Gestation