The biparietal diameter of the fetus is one of the important reference indicators used to measure fetal growth and development. If the biparietal diameter of the fetus is too large, it may affect the normal delivery of the pregnant mother. If the biparietal diameter of the fetus is too small, it may indicate a lag in the growth and development of the fetus. So, how much does a fetus with a biparietal diameter of 8.8 weigh?
The biparietal diameter is calculated from the widest distance between the two sides of the fetal head. In clinical practice, using the biparietal diameter values of the fetus is a further method for calculating the weight of the fetus. If the biparietal diameter of the fetus is 8.8cm, then the weight of the fetus is approximately 2.72 kilograms. Of course, this is not a definite value, it is just a preliminary predicted value and not an accurate calculation result.
In general, the double apex diameter is measured using ultrasonic waves. As the gestational age increases, the skull of the fetus continues to grow. When measuring biparietal diameter, it is necessary to start from the inner edge of the skull on one side of the fetus and end at the outer edge of the skull on the other side. The values obtained from different examination hospitals, doctors, and machines may also have certain deviations.
The use of biparietal diameter to assist in determining the developmental size of the fetus is only of reference value and not accurate data. During the delivery process, the maximum diameter of the fetal head passing through the birth canal is the biparietal diameter, while the minimum diameter that allows the fetus to pass through the birth canal is the transverse diameter of the pelvic outlet. So, if the biparietal diameter of the fetus is larger than the transverse diameter of the pelvic outlet of the pregnant mother, the pregnant mother cannot achieve natural delivery. Therefore, the final mode of delivery also depends on the pregnant mother's pelvis and the size of the baby at full term.
