29 weeks gestation fetal double parietal diameter and femoral length standards

At 29 weeks, it is already in the second trimester, and the body of pregnant women at this time is generally relatively bulky. At this time, it is necessary to pay attention to monitoring the growth and development of the fetus, especially the double parietal diameter of the fetus. Once a problem with the fetus's biparietal diameter is detected, measures can be taken in time to deal with it.

So how normal is the standard value of fetal double parietal diameter at 29 weeks?

29-week fetal biparietal diameter standard.

The mean value of the double parietal diameter at 29 weeks of gestation was taxi. The double parietal diameter of the fetal head is also known as BPD. It refers to the length of the widest part between the left and right sides of the fetal head, also known as the "large transverse diameter of the head".

Doctors often use it to observe the child's development and determine whether there can be a cephalopelvic disproportion and a smooth delivery.

It should be centimeter or more at term. According to the general rule, after 5 months of pregnancy, it basically corresponds to the month of pregnancy, that is, BPD is about centimeters at 28 weeks (7 months) of pregnancy, about centimeters at 32 weeks (8 months) of pregnancy, and so on. After 8 months of pregnancy, it is normal to have an average weekly growth of about centimeters.

When the expected date of delivery cannot be determined by CRL in the initial stage, BPD is often used**; After the middle term, this data is often also measured when determining the weight of the fetus.

Is normal delivery related to double parietal diameter?

Smooth delivery is related to the size of the double parietal diameter, but if you want to have a smooth delivery, you can not only look at the double parietal diameter, but also look at three factors. The double parietal diameter is only an indicator to measure whether the fetus is developing healthily, and to judge whether the pregnant mother can give birth smoothly, the first point is the birth canal, the second point is the labor force, and the third point is the development of the fetal baby.

The birth canal is composed of a bone birth canal and a soft birth canal, and if the bone birth canal is abnormal, narrowed or deformed, it is undoubtedly impossible to have a smooth birth, and there may be dystocia. Therefore, pregnant mothers should do a good job of prenatal checkups.

On TV, those pregnant mothers have to exhale and inhale during childbirth, and try their best to pull the baby out, so labor force refers to the uterine contractility and the abdominal pressure generated when the pregnant mother holds her breath, and the pregnant mother must have a strong body to give birth to the baby smoothly. However, if the baby is too large, it is still very laborious for the pregnant mother to give birth to the baby, and it may be necessary to have a caesarean section.

The last point is that the baby is too big, and the pregnant mother is to blame for eating too much? Well, it's possible. What's worse is that if the fetus is too big, or the fetal position is abnormal, it will give birth normally, and even have a difficult birth.

To put it simply, the maximum diameter of the fetus's head through the birth canal during childbirth is the double parietal diameter, and the smallest diameter of the fetus in the birth canal is the pelvic outlet transverse diameter, so if the double parietal diameter is larger than the pelvic outlet transverse diameter, it is difficult for the pregnant mother to give birth naturally.

This article details what is the standard value of fetal double parietal diameter, and also introduces the effect of fetal double parietal diameter on normal delivery. As a woman at 29 weeks pregnant, it is best for you to compare your own situation and look at the standard value of the development of the double parietal diameter, so that you can better promote the better development of the double parietal diameter and ensure the smooth delivery.

The process of giving birth to life is very wonderful, and the baby in the mother's womb can be said to have new changes every day. Although it will be very hard for expectant mothers during pregnancy, it is also a joy to be able to feel the growth of the baby! So, to what extent has the fetus developed at 29 weeks of pregnancy?

Fetal Development Standard Table at 29 Weeks of Pregnancy.

Fetal development. The fetus is about 36cm long and weighs about 1300g. The mean of the double parietal diameter is, the mean of the abdominal circumference is, and the femoral length is.

The fetus is getting bigger and bigger, filling the entire womb, the brain and internal organs are still developing, and his head is enlarged as the brain develops. The auditory system is also becoming more and more developed, and the fetus is still trying to practice breathing exercises similar to one breath and one inhale.

As the fetus develops, you will find that even the fingernails of the fetus can now be seen clearly. You see, he's working hard to prepare for birth!

Nutritional advice at 29 weeks gestation.

1.Pregnant mothers in the third trimester should not consume too much sugar, that is, do not eat too much staple food, so as not to make the fetus too large and affect delivery. You can eat more high-quality protein, such as fish and shrimp foods.

In addition, it is necessary to eat fresh vegetables and fruits, and supplement various vitamins and trace elements.

2.After the 8th month, the uterus grows and slowly pushes against the stomach, so you feel full after eating a little. You can eat small and frequent meals, 7 to 8 times a day.

3.Many pregnant mothers have the experience of being woken up hungry at night, they can drink some porridge, eat 2 biscuits and drink 1 cup of milk, or eat 2 pieces of dried tofu and 2 pieces of beef, rinse their mouths, and then go back to sleep.

The above is the development of the fetus at 29 weeks of pregnancy, hoping to help expectant mothers understand the situation of the fetus in the womb. In addition, during this period, expectant mothers should be vigilant against early and abnormal fetal position, and at the same time, they can also do some gentle exercises, which will help pregnant mothers give birth smoothly!

At 29 weeks, the fetus has a double parietal diameter of 72 mm and a femoral head of about 55 mm.

Is it normal for the femur to be 29mm long at 19 weeks pregnant

The standard femoral length of the fetus at 19 weeks of pregnancy is that if the fetal femur length is 29mm at 19 weeks of pregnancy, that is, it is within the normal range, so it is normal, and the pregnant mother does not need to worry.

What to do if the fetal femur length is short at 19 weeks of pregnancy

At 19 weeks of pregnancy, the fetus has a short femur length, which is common in the following situations:

1. Measurement error: There will be measurement error when measuring the fetal femur length, after 30 weeks of pregnancy, it is allowed to have an error of the upper and lower two weeks, as long as the shortness does not exceed this range, there is no need to worry too much.

2. Fetal dysplasia: If the result of femoral length measurement is very different from the standard value, it is necessary to consider whether there is fetal hypoplasia. The mother should do a good job of physical monitoring, and go to the hospital for examination in time if there are symptoms such as irregular abdominal pain and redness.

3. Genetic causes: genetic problems will also lead to congenital shortening of the fetal femur, which will affect the height of the baby after birth, but after the baby is born, try to let him supplement more calcium, balanced nutrition, and strengthen physical exercise, and the height can be improved.

4. Calcium deficiency during pregnancy: Calcium deficiency during pregnancy will also lead to a short femur length, and pregnant mothers can supplement calcium and protein by drinking more calcium-rich foods such as milk and bone broth.

What to do if the fetal femur is long at 19 weeks of pregnancy

At 19 weeks of pregnancy, fetal femur length is more common than the following:

1. There is an error in measurement: the measurement error will also cause the data of fetal femur length to look large, after 30 weeks of pregnancy, as long as the femur length is not more than the upper limit of the standard value of two weeks, you can not worry too much.

2. Fetal femur length congenital length: Some genetic factors will also cause fetal congenital femur length to length, which is more troublesome and needs to be adjusted by a doctor's diagnosis.

At 19 weeks of pregnancy, the fetal length is about 22 cm and the fetal weight is about 250 g.

In the 19th week of pregnancy, the mother has passed the high incidence of miscarriage, the risk of fetal development malformations is greatly reduced, the legs grow in proportion to other organs of the body, there are obvious kicks and hands, and the brain, which is responsible for the sense of touch, taste, smell, vision and hearing, is differentiating.

Criteria for fetal abdominal circumference at 19 weeks of pregnancy

Fetal abdominal circumference mainly refers to the development of the fetal abdomen, and the size of the fetal abdominal circumference is detected to determine whether the fetus is developing normally. At 19 weeks of pregnancy, the fetal abdominal circumference is about, if the abdominal circumference exceeds the range, it may be that the fetus is overweight, it may also be a disease of the internal organs, or chest and ascitesIf it is less than the range, it may be that the placenta of the pregnant woman is not functioning well, and the fetus cannot attract nutrients, resulting in a small size.

At 29 weeks of pregnancy, the standard value of fetal double parietal diameter

At 29 weeks of pregnancy, the fetal double parietal diameter is about, the double parietal diameter refers to the length of the widest part between the left and right sides of the fetal head, which is used to judge the size of the child's development. If the fetus at 29 weeks of pregnancy has a large double parietal diameter, it may be that the pregnant mother is too well nourished, but it may also be that the fetus has hydrocephalus, which needs to be sent to the hospital in time**. Generally, it is normal for the double top diameter to be large and small, as long as it is not too exaggerated, it is not a big problem.

At 29 weeks of pregnancy, the fetus has a fetal length of about 36 cm and a fetal weight of about 1300 g.

At the 29th week of pregnancy, the fetus grows bigger and bigger, the subcutaneous fat has been initially formed, the brain and internal organs continue to develop, the auditory system is becoming more and more perfect, the fingernails can be seen clearly, and the fetal movement will gradually weaken.

At 29 weeks of pregnancy, the fetal heart rate is more or less normal

Fetal heart rate refers to the fetal heart rate, through the monitoring of fetal heart rate, you can timely understand the situation of the fetus, when 29 weeks of pregnancy, the fetal heart rate is about 110 160 minutes, if the fetal heart rate is high 110 160 minutes range, it may be hypoxia that causes fetal asphyxia, if the fetal heart rate is lower than 110 160 minutes this range, it is possible that the fetal brain is underdeveloped, and even endanger the life of the fetus.

Amniotic fluid index is more or less normal at 29 weeks of pregnancy

Amniotic fluid is mainly the maternal serum through the placenta into the amniotic cavity of the dialysate, normally, at 29 weeks of pregnancy, the amniotic fluid index is about, the normal value of amniotic fluid volume is about 700-1000ml, the depth of amniotic fluid is about 3-8cm, if the amniotic fluid at 29 weeks of pregnancy is too little, it is necessary to pay attention to the fetus may have growth restriction, resulting in fetal malformation or premature birth;If there is polyhydramnios at 29 weeks of pregnancy, it can also lead to fetal malformations, or multiple pregnancies, placental umbilical cord lesions, and incompatibility of mother and child blood types. Pregnant mothers should do regular prenatal check-ups, and the fetus can be screened for genetic diseases through the detection of fetal cell chromosomes in amniotic fluid.

How normal is HCG at 29 weeks of pregnancy

The HCG value at 29 weeks of pregnancy is about 1400-53000IU L, HCG refers to human chorionic gonadotropin, which is a glycoprotein secreted by the trophoblast cells of the placenta, HCG is an important indicator to measure fetal development, at 29 weeks of pregnancy, if the HCG value is too low in the range of 1400-53000IU L, it may be fetal growth retardation, there is a threatened miscarriage, if the HCG value at 29 weeks of pregnancy is too high in the range of 1400-53000IU L, It is possible that there is an abnormal pregnancy - molar pregnancy. However, if the HCG value is too high, it is also possible to have twins or multiple births, because the number of multiple pregnancies is higher than that of single pregnancies, so there is no need to worry about this situation, but it is worth rejoicing.

29 weeks of pregnancy +2: double parietal diameter cm, femur length cm, within the normal range.

The normal values for fetal development on ultrasound at 29 weeks of pregnancy are:

The mean of the double parietal diameter is the mean of the abdominal circumference and the mean of the femur length.

In the third trimester of pregnancy, the difference between the double parietal diameter and femur length of the fetus will be above; If the parents are not very tall, the difference between the double parietal diameter and femur length in the third trimester may also be greater.