Biparietal diameter is a very important index in the results of fetal ultrasound. Through the biparietal diameter index, doctors can determine the development of the baby and help predict the baby's weight and size at birth.

The second trimester is counted from week 13 to the end of week 27 of pregnancy. In the second trimester, the sex of the fetus can also be clearly seen and the pregnant woman begins to feel the movements of the fetus.

The second trimester of pregnancy is the period when the fetus develops strongly in both shape and brain structure. The weight of the fetus in the second trimester is one of the important factors in assessing the health of the fetus.

It is not good for the fetus to gain weight too quickly. In addition to increasing the risk of having to have a cesarean section, an overweight fetus also has many potential diseases such as diabetes, causing complications for the mother and baby during and after birth. So what should mothers pay attention to when they discover that the fetus is overweight?

The third trimester is also the final stage of pregnancy. During this stage, the fetus continues to develop and mature so that it can be born healthy. Below are signs of good fetal development in the last 3 months.

In case the biparietal diameter has a larger head than normal if delivered vaginally, it can be dangerous for both mother and baby during childbirth. However, to measure more accurately, doctors will combine measuring biparietal diameter index with other fetal indicators such as: Abdominal circumference, femur length,...

In addition to the fetal weight index, the femur length index is one of the necessary parameters to help mothers know the development status of the fetus in the womb. Doctors can measure the length of the femur from the 14th week of pregnancy, to the 30th week of pregnancy, what is the average femur length of the fetus?