How big is the fetus at 8 weeks of pregnancy

How big is the baby at eight weeks of pregnancy? After the pregnant father and mother combine to produce sperm and egg through fertilization, the next step is to produce the embryo bud and fetal heart. The fetal heart rate plays a very important role in the growth of the fetus. The fetal heart rate will gradually change with the growth of the fetus. The changes in the fetal heart rate are different in each stage. In a fixed stage, the fetal heart rate has a fixed growth data.

How big is the baby at eight weeks of pregnancy

8 weeks: 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.

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.

If there is no fetal bud or fetal heartbeat at 8 weeks of pregnancy, it may be caused by the following factors:

1. Test tube embryo factors: Abnormalities in the sex chromosomes carrying the genetic material of 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.