What is the formula for calculating fetal weight

summary

As we all know, after the successful delivery of female friends, when doctors inform their relatives of the baby's gender, they will mostly tell them together with their weight. In fact, when the fetus is in the mother's body, there is a certain calculation method for its weight. Therefore, the next part of this paper is about the calculation formula and method of fetal weight.

What is the formula for calculating fetal weight

First of all: in the first three months of pregnancy, the height of the fetus (CM) is calculated by measuring the distance from the head to the buttock. As the fetus gradually develops, from the 15th week of pregnancy, the fetal head circumference or the diameter between the two parietal bones, abdominal circumference and the length of thigh bone are measured to determine the size of the fetus, and then the fetal weight (g) is estimated.

Secondly: Generally speaking, there are large errors in the measurement results of fetal body length in clinical practice. For example, the curly posture of the fetus and the size of the skeleton may lead to misjudgment of the results. Therefore, weight rather than body length will be used as the basis for evaluating fetal growth in medicine.

Finally: Formula 1: fetal weight (g) = 260.69 * HC (head circumference) - 4973.72, formula 2: fetal weight (g) = 171.48 * AC (abdominal circumference) - 2686.60, formula 3: fetal weight (g) = 747.42 * FL (femur length) - 2232.56, formula 4: fetal weight (g) = 1049.90 * FTH (fetal leg subcutaneous fat thickness) - 2513.51.

matters needing attention

After understanding the formula of fetal weight, women should also pay attention to nutrition supply and body protection measures during pregnancy.