After pregnancy, it is necessary to go to the hospital for regular prenatal check ups to understand the current development of the fetus. The required examinations vary depending on the pregnancy cycle. Many women who are pregnant for the first time may feel a bit confused when they receive the test results, not knowing how to interpret each data item to represent normal fetal development. So what is the biparietal diameter in the prenatal examination data?
The biparietal diameter refers to the distance between the parietal bones of the fetal head, and doctors will use ultrasound to measure the maximum distance between the left and right parietal bones of the fetal head. By measuring this data, the growth and development of the fetus in the uterus can be observed, which is also an important examination in pregnancy testing.
As the fetus continues to develop, the biparietal diameter data will also change. In mid pregnancy, doctors can also evaluate the development of the fetal nervous system through biparietal diameter values. If the fetal biparietal diameter value exceeds or falls below the normal range, it indicates abnormal development of the fetal nervous system or malnutrition, and needs to be treated in a timely manner.
In the late stages of pregnancy, doctors can determine the symmetry of the head based on the value of the fetal biparietal diameter, and also estimate the fetal weight and development based on the length of the femur, in order to determine the delivery method of the pregnant woman. If the fetal head is too large or overweight, a cesarean section can only be chosen to reduce the risk of difficult delivery.
