Is the cerebroplacental index a predictor of adverse perinatal events in low-risk pregnancies? We estimate the prevalence in a third level hospital in Colombia

Abstract

Introduction: The cerebro-placental ratio results from the division of the pulsatibility index of the umbilical artery and the middle cerebral artery, which is used with greater sensitivity to rule out adverse perinatal event in pregnancies in which comorbidities are known, an attempt is made to describe other uses for this tool due to its easy application. Objectives: To determine the prevalence of an adverse perinatal event in fetuses over 34 weeks with consistent growth in low-risk pregnancies and altered cerebroplacental index in Barranquilla between 2017 and 2019. Methodology: a descriptive cross-sectional study with exploratory analysis of associated factors, 6,607 Dopplers were reviewed, of which 25 had altered cerebro-placental ratio index and that met the inclusion and exclusion criteria. Results: 84% of the pregnant women were under 26 years of age, there were no cases of perinatal mortality in this group of patients related to the cerebroplacental index. Only 12% of newborns were admitted to the NICU, and for APGAR less than 7 during the first 5 minutes only 4% of newborns presented it. Conclusions: The cerebro-placental Ratio (CPR) has become an evaluation tool for fetuses at higher risk of growth disorders. Low CPR is associated with adverse neonatal and perinatal outcomes as described in the literature.