What is the normal biparietal diameter at 23 weeks?

In the early stages of pregnancy, pregnant mothers worry about the instability of their fetuses. In the middle and late stages of pregnancy, pregnant mothers begin to worry about the size of the fetus and the standard value of the biparietal diameter. Especially when they reach 23 weeks, pregnant mothers begin to have examinations. So, what is the normal biparietal diameter of a fetus at 23 weeks? Let's find out together below.

1. Biparietal diameter index value of 23-week fetus

The standard of biparietal diameter of 23-week fetus: The mean biparietal diameter of the fetus is 5.80±0.44.

The biparietal diameter of the fetus refers to the length of the widest part between the upper and lower sides of the fetus's head, also known as the "great transverse diameter of the head."

Also known as BPD, doctors often use it to observe the growth and development of children, determine whether there is cephalopelvic disproportion, and complete delivery of pregnant women.

At full term, it should be 9.3 cm or above. According to general regularity, after the fifth month of pregnancy, it is basically consistent with the pregnancy phase. In other words, the BPD is about 7.0 cm at the 28th week of pregnancy (7th month), about 8.0 cm at the 32nd week of pregnancy (8th month), and so on. After the eighth month of pregnancy, an average increase of about 0.2 cm per week is normal. When the due date cannot be determined based on CRL in the early stage, BPD is usually used for prediction; in the middle and late stages, when determining the baby's weight, it is usually necessary to accurately measure this data.

2. Is it scientific to measure the gender of a fetus by its biparietal diameter and femoral length?

Fetal biparietal diameter is also known as BPD, the biparietal diameter of the fetal head. It refers to the length of the widest part between the upper and lower sides of the fetal head, also known as the "great transverse diameter of the head". Doctors often use it to observe the growth and development of children, determine whether there is cephalopelvic disproportion, and complete the delivery of pregnant women.

At full term, the biparietal diameter of the fetus should be 9.3 cm or more. According to general regularity, after the fifth month of pregnancy, it is basically consistent with the pregnancy phase. In other words, the BPD is about 7.0 cm at the 28th week of pregnancy (7th month), about 8.0 cm at the 32nd week of pregnancy (8th month), and so on. After the eighth month of pregnancy, an average increase of about 0.2 cm per week is normal. When the due date cannot be determined based on CRL in the early stage, BPD is usually used for prediction; in the middle and late stages, when determining the baby's weight, it is usually necessary to accurately measure this data.

Experts remind: It is not scientific to use the biparietal diameter of the fetus to determine whether the fetus is male or female. However, the fetal biparietal diameter is used to calculate the weight of the fetus. The formula is: baby weight = fetal biparietal diameter * 900-5200 (g)

Fetal femur length (FL) is a common indicator used by doctors to observe the baby's development when performing prenatal checkups on pregnant women using B-ultrasound (or B-ultrasound).

The above is a detailed introduction to the biparietal diameter index of the 23-week fetus. I believe that pregnant mothers have already understood it. Having a baby is a very difficult thing, so every mother is excellent. During the ten months of pregnancy, you will worry about the baby's health every day. In fact, pregnant mothers don't need to be too nervous.