What are the causes of threatened miscarriage?

Threatened abortion occurs before 28 weeks of pregnancy, with a small amount of vaginal bleeding or lower abdominal pain. If not handled carefully, it can cause miscarriage. Therefore, the harm of threatened abortion is also very large. So what are the causes of threatened abortion? Let's take a look together.

There are many reasons for threatened miscarriage, the main one being embryo abnormalities caused by genetic factors. Abortion caused by this can actually be considered a good thing, because an abnormal fetus, if it is really born at full term, will also have deformities or abnormalities.

Other reasons such as insufficient oxygen supply to the umbilical cord, amniotic fluid disease, placental virus infection and certain gynecological inflammation can also cause miscarriage. Malnutrition of pregnant women is also one of the causes of miscarriage. Some pregnant women have severe nausea and vomiting in the early stages of pregnancy, resulting in extreme nutritional deficiency, which has a great impact on the development of the embryo and is also prone to miscarriage.

In addition, after a woman becomes pregnant, if she is emotionally unstable, angry, sad, or other mental stimulation, it will disrupt the activity of the cerebral cortex, causing the uterus to contract and force the embryo out, or causing the embryo to die in the uterus. Acute infectious diseases such as influenza and rubella can cause miscarriage due to high fever and toxins released by bacteria and viruses. Endocrine disorders, such as corpus luteum, pituitary gland, and thyroid dysfunction, as well as excessive uterine retroflexion in uterine hypoplasia, which causes the uterine cavity to hinder the development of the embryo, can all cause miscarriage.

Other aspects: Sexual life should be cautious during the entire pregnancy period. Inappropriate sexual life, especially in the early stages of pregnancy, can easily cause miscarriage. In the second trimester, sexual life should also be moderate, avoiding sexual intercourse positions that compress the pregnant woman's abdomen and rough sexual intercourse to avoid miscarriage.

During the perinatal period, rough gynecological examinations can also easily cause miscarriage, especially for pregnant women with weak constitutions. Poisoning with drugs and certain chemicals, such as quinine, carbon monoxide, aluminum, phosphorus, mercury, and benzene, can also make it difficult to save the embryo.