What reason is abortion of 5 months?
summary
In fact, in our life, we often see that some women are prone to miscarriage because they don't pay attention to it. For a woman, pregnancy is a very happy thing for them. Moreover, many women are very careful in the pregnancy stage. They are afraid that the fetus will be affected if they don't pay attention to it. The risk of miscarriage after five months of pregnancy is also very high, Therefore, in the process of pregnancy, we must pay attention to the prevention of abortion, do a good job in all aspects of prevention, to avoid the phenomenon of abortion. What reason is abortion of 5 months?? Let's talk about it.
What reason is abortion of 5 months?
1. In the first trimester of pregnancy, in addition to progesterone secreted by corpus luteum, placental trophoblast also gradually produced progesterone. After 8 weeks of gestation, the placenta gradually becomes the main place to produce progesterone. In addition to progesterone, the placenta also synthesizes other hormones such as progesterone β- Chorionic gonadotropin, placental lactogen and estrogen. In early pregnancy, the above hormone values decreased, and the pregnancy was difficult to continue, resulting in abortion.
2. In the early stage of spontaneous abortion due to genetic factors, 50% - 60% of the embryos were abnormal in chromosome number, followed by chromosome structure. The number of abnormal trisomy, triploid and X monosomy. Structural abnormalities include chromosome breakage, inversion, deletion and translocation. Most of the embryos with chromosomal abnormalities result in abortion, and a few may continue to develop into fetuses. However, some functional abnormalities or combined deformities may occur after birth. In case of abortion, the pregnancy product is sometimes only an empty gestational sac or a degenerated embryo.
3. Immune factor pregnancy is like allogeneic transplantation. There is a complex and special immunological relationship between the embryo and the mother, which makes the embryo not rejected. If both the mother and the child do not adapt to the immune system, it may cause the rejection of the mother to the embryo and lead to abortion. The main immune factors are the histocompatibility antigen of the father, the fetal specific antigen, the blood group antigen, the imbalance of the maternal cellular immune regulation and so on.
matters needing attention
Through the introduction, we understand some of the factors that cause abortion, all aspects of the factors should cause enough attention. If you accidentally miscarry, to understand the specific causes of abortion, and take appropriate countermeasures. Abortion female friends do not sad, to pay attention to take care of the body, for the next pregnancy to lay a good physical foundation oh.
