Biparietal diameter and gestational age comparison chart picture

Whether the growth and development of the fetus is healthy needs to be checked regularly. Generally, women need to go to the hospital to register after they become pregnant. In this way, the doctor will remind you when to do which examinations and promptly understand the growth and development and health status of the fetus. The biparietal diameter of the fetus is a standard for checking the baby's development. Let's take a look at the picture of the fetal biparietal diameter and the number of weeks of pregnancy.

1. List of fetal biparietal diameter and gestational weeks

1. Expectant mothers can go to the hospital for B-ultrasound to check the baby's biparietal diameter after 12 weeks of pregnancy. At 13 weeks of pregnancy, the baby's biparietal diameter has reached 2.52 cm. Of course, this value is not absolute. As long as it does not exceed 0.25 cm, it is basically within the normal range.

2. When the expectant mother is 14 weeks pregnant, the average biparietal diameter of the baby is about 2.83 cm. Of course, due to the different time of embryo implantation and the different growth rates of the babies, the values ​​of the biparietal diameter of the babies are also different. Some babies may be slightly higher, and some may be lower. The fluctuation should not exceed 0.57 cm.

3. Next are mothers who are 15 weeks pregnant. The baby's biparietal diameter is about 3.23 cm. By extension, the baby grows at an average rate of about 0.4 cm per week. Of course, the individual differences of each baby will result in different data for the fetal biparietal diameter. Mothers also need to go to the hospital for an ultrasound examination and follow the doctor's advice to judge the baby's growth and development status.

2. How to accurately measure the biparietal diameter of the fetus?

1. First of all, B-ultrasound can accurately measure the biparietal diameter of the fetus when the fetus is about 12 weeks old. The actual measurement method is that the width from the edge of one side of the baby's head to the edge of the other side is the baby's biparietal diameter. The baby grows very fast, so the standard value of the fetal biparietal diameter each week is different.

2. By the time expectant mothers give birth at full term, the maximum biparietal diameter of the baby can reach 10 cm. Of course, the data of some babies may be smaller. This is due to differences in the baby's development and the different nutrition of the expectant mothers.

3. In addition, the baby's biparietal diameter is also known as the great transverse diameter of the head. If the BPD is measured by ultrasound and is more than 8.5 cm, it means that the baby has grown and matured. If the CRL cannot be used to calculate the due date at the beginning of pregnancy, the baby's biparietal diameter data can be used to calculate the approximate delivery date.

During the prenatal checkup period, women must pay attention to regular checkups according to the doctor's requirements. In this way, they can promptly deal with any deficiencies in the child's growth, make timely adjustments in daily life, and ensure that the baby grows up in accordance with the requirements. The above is a brief introduction to the biparietal diameter of the fetus and the number of weeks of pregnancy. Women should do a good job of physical conditioning during pregnancy.