Standard value of femoral length at 39 weeks

39 weeks is the late stage of pregnancy. At this time, the fetus is basically mature. At this time, the fetal femur length can also be measured. The fetal femur length at 39 weeks should be 7.34 plus or minus 0.53. Generally, a difference of two centimeters is normal. Some problems can also be discovered through the fetus's femur length. Of course, this kind of measurement is prone to inaccurate data, so we should also pay attention to this aspect.

Standard value of femur length of 39-week fetus

The standard value of femur length is 7.34 ± 0.53, and a difference of about 2 cm is normal.

How to read the standard value of fetal femur length

As the gestational age increases, the value of the femur length will gradually increase because the fetus's height and weight are gradually increasing.

When seeing the standard value data of fetal femur length, pregnant mothers do not need to be too nervous, because the fetus moves more in the mother's belly, and different fetal positions and different doctors' operations will cause errors in the data, and sometimes even large fluctuations, so it doesn't matter if the values ​​are slightly different. Experts say that after 30 weeks of pregnancy, an error of two weeks is allowed, so when pregnant mothers see that the report results are different from the normal values, they don’t need to be too nervous. If there is indeed a problem after the reexamination, consult a doctor and seek a solution.

Factors affecting fetal femur length

1. Measurement error: Different fetal positions and different doctors' operations will cause errors in femoral length data. Treatment method: After 30 weeks of pregnancy, the femur length is allowed to have an error of two weeks. As long as it is within this range, pregnant mothers do not need to worry too much.

2. Fetal hypoplasia Fetal hypoplasia will also affect the length of the femur. Treatment method: Pregnant women should monitor the health of their babies and themselves. If they have irregular abdominal pain, spotting, etc., they should go to the hospital for examination in time.

3. Genetic factors The genetic factors of the fetus will also affect the length of the femur. For example, some fetuses have congenitally short femurs due to genetic factors, which affects the baby's height. How to deal with this situation: When encountering this situation, after the baby is born, try to let him drink more milk and supplement more calcium. At the same time, strengthen physical exercise, which is very helpful for the baby's height.

4. Calcium deficiency Calcium deficiency during pregnancy may affect the length of the femur. Treatment method: Pregnant mothers should supplement calcium and high-quality protein appropriately, and eat more calcium-rich foods in their diet, such as milk, lean meat, bone soup, etc. In addition, pregnant women should get more sun exposure to facilitate calcium absorption.

This article introduces in detail the standard value of fetal femur length, how to read the standard value of femur length, and what factors will affect the standard value of femur length. As a woman who is already 39 weeks pregnant, your baby is about to come into this world. Measuring the femur length is very meaningful for the normal delivery of the fetus.