Causes of missed abortion

During the pregnancy process, the last thing people want to see is miscarriage. After a hard-earned pregnancy, once miscarriage occurs, it is not only physically harmful, but also has more psychological impacts. There are many types of miscarriage, and missed miscarriage is one of them. It is best for us to learn as much as possible about the causes of missed miscarriage and take active measures to prevent it. So, what are the causes of missed abortion?

Causes

1. Mental stress: This type of reasons includes excessive tension, anxiety, fear, sadness, etc.;

2. Genetic defects: such as chromosomal abnormalities, chromosome mutations of one spouse, and blood type incompatibility of the couple;

3. Bad habits: such as excessive smoking, alcoholism, excessive coffee drinking, heroin, etc.;

4. Environmental factors: Frequent exposure to chemicals such as arsenic, lead, formaldehyde, benzene, chloroprene, ethylene oxide, radiation, etc. can easily lead to missed abortion;

5. Maternal factors: maternal diseases, such as reproductive organ abnormalities and uterine tumors, herpes simplex virus, cytomegalovirus infection, etc.

6. Endocrine abnormalities: such as uncontrolled severe diabetes, luteal insufficiency, hypothyroidism, etc.;

7. Abnormal immune function: Pregnancy is similar to allogeneic transplantation. There is a complex and special immunological relationship between the embryo and the mother, which prevents the embryo from being rejected. If the mother and the child are not immune compatible, it may cause the mother to reject the embryo and cause miscarriage.

symptom

1. Amenorrhea and early pregnancy reactions. Maybe you had symptoms of threatened miscarriage some time ago, but your uterus no longer grows or even shrinks. If it is the second trimester, the pregnant woman does not feel her abdomen enlarged, there is no fetal movement, and gynecological examination shows that the cervix is ​​closed, the uterus is more than 2 months smaller than the gestational month, and the texture is not soft. The fetal heartbeat was not heard.

2. Abdominal pain: In early miscarriage, after the bleeding begins, there is blood in the uterine cavity, especially blood clots, which stimulate uterine contraction and cause persistent lower abdominal pain. In late miscarriage, there is paroxysmal uterine contraction first and then placental detachment, so there is abdominal pain before vaginal bleeding.

3. The color of the blood: The blood is bright red at the beginning of miscarriage and turns into dark red or brown over time. The blood is often light red or brown in small amounts in ectopic pregnancy; and dark red in hydatidiform mole.

4. Vaginal bleeding: In cases of miscarriage within 3 months of pregnancy, the chorion and decidua separate and the blood sinuses open, and bleeding begins. When the embryo is completely detached and expelled from the uterus, the blood sinuses close due to strong contraction and the bleeding stops.