How much does a four month old baby weigh?

There are certain normal values ​​for babies' bodies when they are developing. If the baby does not reach the corresponding normal values, you need to take appropriate measures to treat it, so as to avoid dangerous conditions in the baby's body caused by this problem and thus affect the baby. So how much does a four-month-old baby weigh? Well, let me introduce this issue to you below.

1. BPD: Biparietal diameter, refers to the diameter measurement data on both sides of the fetal head, and is also one of the indicators for estimating the size of the fetus. According to general rules, it is less than 3 cm at 3 months of pregnancy; after 5 months of pregnancy, it is basically consistent with the month of pregnancy, that is, bpd is about 7 cm at 28 weeks (7 months) of pregnancy, about 8 cm at 32 weeks (8 months), and so on. After 8 months of pregnancy, an average weekly growth of about 0.2 cm is normal. From this ultrasound report, we can see that the baby's bpd is 54mm, and the expectant mother is more than 5 months pregnant.

2. hc: Head circumference, which refers to the maximum length around the fetal head. The longest part of the fetus' head from front to back.

3. ac: abdominal circumference, which is the circumference of the fetal abdomen.

4. fl: Femoral length, refers to the length of the fetal thigh bone.

5. hl: humeral length, refers to the length of the fetal upper arm bone.

How to calculate fetal weight through B-ultrasound data?

During the first three months of pregnancy, the fetal length (cm) is calculated mainly by measuring the distance from the fetal head to the hips. As the fetus develops, starting from the 15th week of pregnancy, the head circumference (hc) or the diameter between the two parietal bones (bpd), abdominal circumference (ac) and femur length (fl) are measured to determine the size of the fetus, and then the fetal weight (g) is estimated.

The above is my opinion on this issue. If there are abnormal problems with the baby's body, the baby needs to pay attention to take appropriate measures in time to ensure the health and safety of the body, and avoid dangerous situations in the baby's development due to the above problems. Finally, I wish the baby a healthy birth.