What causes threatened miscarriage?

How is threatened abortion caused? Abortion is common in our lives and is a phenomenon that everyone is familiar with. There are many clinical classifications of abortion, and threatened abortion is one of them. Once a pregnant woman has threatened abortion, she must go to the hospital for treatment in time. So, how is threatened abortion caused?

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

The first pregnancy checkup is particularly important because usually during the first pregnancy checkup, the gynecological speculum can be used to understand the vaginal and cervical conditions of the expectant mother and rule out the possibility of abnormal development of the expectant mother's reproductive organs. If abnormalities are found, the expectant mother should follow the doctor's advice and deal with them as soon as possible. Otherwise, if a miscarriage is forced, the body of the expectant mother will suffer greater damage.

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 nutrition and may suffer miscarriage.

Endocrine abnormalities can seriously affect the placenta: luteal insufficiency often affects the decidua and placenta and causes miscarriage; when progesterone secretion is insufficient, the uterine decidua will develop poorly, thereby affecting the development of the fertilized egg and causing miscarriage.

An increase in prostaglandins can cause frequent contractions of the uterine muscles and can also lead to miscarriage; hypothyroidism can hinder the cellular oxidation capacity, thereby affecting the growth and development of the embryo and causing miscarriage.

3. History of induced abortion and miscarriage: The incidence of miscarriage will increase 10 times for expectant mothers who have a history of induced abortion. The more times of induced abortion, 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.

Doctors usually recommend waiting at least a year and a half after an abortion before planning to get pregnant, and at least a year after a medical abortion before getting pregnant. If you take long-acting oral contraceptives, you should stop taking them for 3 to 6 months before planning to get pregnant. After stopping taking short-acting oral contraceptives, you need to resume your menstruation before you can get pregnant.