How big is the fetus at eight weeks

The embryonic bud and fetal heart rate are the names for a certain period in the whole process of the baby's development. Generally, the 3rd week to 14th week of pregnancy is called the embryonic bud and fetal heart rate period. The embryonic bud and fetal heart are actually the early test tube embryo. At 8 weeks of pregnancy, the fetus grows to 1.66 cm, the fetal shape is fixed, the fetal head, body and limbs can be separated, and the fetal head is larger than the body. B-ultrasound shows that the gestational sac occupies about 1/2 of the vagina, the shape of the fetus and the fetal movement are clearly visible, and the yolk sac can be seen. Therefore, the fetal heart rate of the embryo at 8 weeks of pregnancy is about 1.66 cm long.

1. Test tube embryo factors: Abnormalities in the sex chromosomes that carry the genetic information on the sperm and egg lead to abnormal growth and development of test tube embryos.

2. External factors: If pregnant women in the early stages of pregnancy are exposed to harmful substances, such as harmful compounds, inferior home decoration materials, radiation or a large amount of electromagnetic radiation, the growth and development of the fetal bud and fetal heart will also be affected.

3. Pregnant mother factors: Pregnant women are infected with rubella, rubella virus, etc. in the early stages of pregnancy. The pathogens will indirectly infect the fetus, which will cause fetal malformations.

The embryonic bud and fetal heart stage is a stage that the fetus must go through. It is inevitable that the human body will have symptoms during the growth of the fetus, and there is no need to worry. What is the normal fetal heart rate at eight weeks of pregnancy? It is a concern of many mothers. When abnormal fetal heart rate is found, the expectant mother should go to the hospital for physical examination and medical treatment in time. According to the hospital's instructions, the fetus will gradually recover.

Under normal circumstances, the eighth month of pregnancy is considered the late stage of pregnancy. The size of the fetus can be calculated by B-ultrasound examination of the fetal biparietal diameter and femoral length, but there will be some deviations. At this stage, the fetus weighs about 3 or 4 pounds and is about 450 mm long. Eight months is already in the late stage of pregnancy, so pregnant women should pay more attention to their diet. They can eat small meals frequently, but don't eat too much meat, which will cause the baby to gain weight rapidly. When the baby is too heavy, it will cause other diseases, which is not good for the baby's health and will also increase the risk of delivery.