The main causes of threatened miscarriage

Abortion is not unfamiliar to many women. It is a very common phenomenon in our lives. Many women will encounter various problems during pregnancy, and threatened abortion is one of them. So what are the main causes of threatened abortion? Let's find out together.

The main causes of threatened miscarriage are as follows:

1. Uterine malformation. If the expectant mother has uterine malformation such as bicornuate uterus, uterine septum and uterine hypoplasia, it will affect embryo implantation and development and lead to miscarriage; relaxation of the internal uterine os or deep cervical lacerations will cause premature rupture of membranes and late miscarriage.

2. Endocrine abnormalities. I believe everyone knows that the fetus absorbs nutrients from the mother through the placenta. Therefore, when the placenta is underdeveloped or has some diseases, the fetus will not get enough nutrients and may suffer miscarriage.

3. A history of induced abortion or miscarriage. The incidence of miscarriage will increase 10 times for expectant mothers who have a history of induced abortion. The more times abortion is induced, the greater the possibility of miscarriage in the future pregnancy; the incidence of miscarriage will also increase for those who have a history of artificial abortion, intrauterine contraceptive device and oral contraceptives.

4. Father factors: If the fertilized egg is abnormal, it will lead to early miscarriage in women. If miscarriage occurs in the first two months of pregnancy, it is usually caused by defects in sperm or egg.

5. Accidental injuries. When pregnant women are pregnant, especially in the early stages of pregnancy, they may be hit, squeezed, fall, do heavy physical labor, do strenuous sports, undergo abdominal surgery or have appendicitis, which may cause uterine contraction and lead to miscarriage.

6. Bad habits. If the expectant mother is an alcoholic, ethanol will directly harm the fetus, interfere with the placenta and fetal blood circulation, and lead to fetal death and miscarriage; heavy smoking, including passive smoking, will reduce placental blood flow and cause complex changes in hormone levels in the body, both of which can lead to intrauterine growth retardation or miscarriage.