Introduction Understanding the concept of Biparietal Diameter ( BPD) in pregnancy is crucial for expecting mothers and healthcare professionals alike. BPD refers to measuring the widest part of a fetus’s head, which is vital in assessing fetal growth and development. By comprehending the significance of BPD , healthcare providers can monitor the well-being of both the mother and baby more effectively. This article briefly overviews BPD and highlights its importance in prenatal care. What Is ... BPD is the biparietal diameter of the foetal head, measured by ultrasound in the second trimester. It is used to estimate foetal age, weight and wellbeing, and can indicate potential problems such as Down syndrome or neural tube defects. BPD stands for biparietal diameter, which is the diameter of the foetal head measured by ultrasound. It is used to track foetal growth, estimate gestational age, and detect anomalies or risk factors. Learn the normal ranges, abnormal signs, and other ultrasound measurements for pregnancy . A normal BPD range in pregnancy indicates the well-being of the baby. If the BPD values are off, it can lead to complications. Read for more.