12-14 days after natural pregnancy or embryo transfer, we will go to the blood draw, through the change of HCG value to determine whether pregnant, and after pregnancy, we will also check the HCG value to understand the development of the fetus. Let's take a look at some of the relevant knowledge of HCG.
1. What is HCG?
HCG, also known as human chorionic gonadotropin, is a glycoprotein secreted by embryonic trophoblasts.
Second, what are the functions of HCG?
1. Pregnancy test
In addition to being able to determine whether it is pregnant, HCG also has a certain suggestive effect on ectopic pregnancy;
2. Protect the embryo
HCG can be adsorbed on the surface of trophoblasts to avoid embryonic trophoblast cells being attacked by maternal lymphocytes;
3. Fetal protection treatment
If insufficient HCG causes a threatened miscarriage, HCG can be injected for fetal preservation, and hCG injections for women who are not pregnant can promote ovulation; If HCG values continue to decline, suggesting that it is not suitable for continued fetal preservation, consider stopping the pregnancy; When the HCG value continues to rise, it indicates the success of fetal protection;
4. Stimulate androgen secretion
HCG can stimulate the secretion of testosterone from the testicles of the fetus, promote sexual differentiation, promote gonadal development;
5. Detect the flow of people
When the surgical abortion is not complete, the HCG test is positive, and the HCG turns from positive to negative in the case of complete miscarriage or stillbirth;
6. Detect other diseases
Such as chorionic carcinoma, mole, etc., for ovarian cysts, uterine cancer and other diseases also have a certain suggestive effect.
7. Other functions
HCG can maintain the lifespan of menstrual luteum, enlarge the menstrual luteum into gestational luteum, promote androgen aromatization into estrogen, and stimulate the formation of progesterone.
Third, what are the reasons for the bad doubling of HCG in the first trimester?
If the gynecops in the early stages of pregnancy is not good, it may be due to ectopic pregnancy or lack of nutrients in the embryo, such as:
1. Ectopic pregnancy
Another reason why the value of hcg does not double is that it is ectopic pregnancy. Generally, during the obstetric examination, the doctor will judge the matters related to pregnancy by the size and change of the hCG value. If the growth of hCG values is very slow, then it is necessary to consider whether it is ectopic pregnancy.
2. Embryonic dysplasia
In fact, after pregnancy, with the continuous development of the fetus, the hCG value in the pregnant woman's body will undergo some changes, and the change in the hcg value can actually be said to be positively related to the development of the fetus. If the fetal development rate is slowed down due to insufficient nutrient absorption by pregnant women, it is natural that the hcg value does not double.
Fourth, what are the general effects of HCG?
Poor doubling of HCG may delay embryonic development, or even stop developing and cause miscarriage, and may also cause the mother to immunely reject the embryo, causing the embryo to be attacked by the immune system and causing miscarriage. Therefore, in this case, doctors generally recommend that pregnant women do not protect the fetus. However, the doubling of HCG is different for each pregnant woman, so pregnant women also need to do ultrasonography to determine whether the embryo is safe and healthy. If the development of the embryo is not different from the actual gestational age, follow the doctor's advice to consider whether fetal protection treatment is required.
Iberian Baomei warm tips: HCG value will change with the development of the fetus, so we can understand the development of the fetus through the range of changes in HCG, so when the HCG abnormality is found, we need to go to the relevant hospital for fetal protection to prevent delays in the best time period for fetal protection.