Frontiers in Medicine
Research progress of cerebroplacental ratio in obstetric complications
Cerebroplacental ratio (CPR), defined as fetal middle cerebral artery pulsatility index (MCA-PI)/umbilical artery pulsatility index (UA-PI), quantifies intrauterine hemodynamic redistribution driven by the fetal brain-sparing response to placental insufficiency. With the advancement of ultrasonic technology and in-depth clinical research, CPR has been widely applied in early screening, condition assessment, prognosis evaluation and intervention guidance of various obstetric complications, especially showing unique …