Calculation of fetal weight during pregnancy

After a pregnant woman becomes pregnant, her weight will increase significantly. On the one hand, this may be due to overeating, which leads to an increase in her own weight. On the other hand, the weight of the newborn in the belly gradually increases, causing the overall weight of the pregnant woman to increase. Many pregnant women want to know the weight of their baby in their belly. In fact, there are many different formulas to calculate the weight of the fetus. This article will introduce in detail several ways to measure your baby's weight.

1. Seven methods of predicting and analyzing the baby's weight during pregnancy

Predictive analysis of baby weight calculation formula 1: baby weight (g) = -4973.72 260.69*HC (baby head circumference)

Predictive analysis of baby weight calculation formula 2: baby weight (g) = -2686.60 171.48*AC (fetal abdominal circumference)

Predictive analysis of baby weight calculation formula three: baby weight (g) = -2232.56 747.42*FL (fetal femur length)

Predict baby weight calculation formula 4: baby weight (g) = -2513.51 1049.90*FTH (fetal foot fat thickness)

Predict baby weight calculation formula 5: baby weight (g) = -5168.32 100.97*HC (baby head circumference) 110.86*AC (fetal abdominal circumference) 143.09*FL (fetal femur length) 331.43*FTH (fetal foot fat thickness)

Predictive analysis of baby weight calculation formula six: baby weight (g) = 900 * BPD (fetal biparietal diameter) - 5200

Predictive analysis of baby weight calculation formula seven: baby weight (g) = 2900 0.3 * uterine fundus height * chest size

2. Should the baby's weight standard be compared with that of babies of the same gestational age?

Is the fetal weight normal? What are the indicators? And who are you comparing it with?

The weight of the baby in the mother's belly is compared with that of the fetus of the same week. Assuming that a pregnant woman is 28 weeks pregnant, if she wants to know whether the weight of her newborn is normal, she needs to combine the pregnant women who are also 28 weeks pregnant, calculate the average weight of the babies in this group of pregnant women, and then check how far this pregnant woman is from this average. Therefore, different weeks of pregnancy will produce different averages.

3. Baby weight is proportional to the number of weeks

However, it is not possible to group all pregnant women of different gestational ages around the world together, so nowadays, in order to estimate the weight of the baby in the belly, statistical methods are used to measure it accurately. Doctors used ultrasound to measure 5,000 pregnant women at 20, 24 and 28 weeks of pregnancy. After measuring the weight parameters of their babies in their belly, they drew a trend chart with the horizontal axis (X-axis) as the number of weeks and the vertical axis (Y-axis) as the weight. From this chart, it can be clearly observed that the weight of the fetus is proportional to the gestational age and increases proportionally.

EBW = ratio of fetal biparietal diameter to periodontal fetal biparietal diameter (BPD) ratio of fetal abdominal circumference to periodontal fetal abdominal circumference (AC) ratio of fetal femur length to periodontal femoral length (FL) ±15% error.

The article explains in detail various ways to calculate your baby's weight. If you are a pregnant woman and want to know how many babies are in your belly, you'd better refer to the content in this article carefully and choose the baby weight calculation method that suits you to calculate the weight of your baby, which is relatively accurate.