Study on the etiology of early spontaneous abortion

The first three months of pregnancy are the most dangerous stage for pregnant women, and miscarriage is most likely to occur at this time. Although the main cause of miscarriage is the quality of the embryo itself, pregnant mothers should still avoid strenuous exercise and pay attention to dietary hygiene after pregnancy to avoid miscarriage due to their own reasons, which will be too late to regret. The following editor will introduce to you the discussion on the causes of early miscarriage.

Causes of spontaneous abortion:

Incomplete embryonic development: Abnormal fertilized eggs are the main cause of early miscarriage. About 80% of miscarriages in the first two months of pregnancy are due to some defects in sperm and eggs, which cause the embryo to develop to a certain extent and then terminate. Therefore, the original embryonic tissue cannot be seen in the discharge of this type of miscarriage.

Endocrine dysfunction: The fertilized egg can implant on the uterine wall and grow into a fetus only under the action of progesterone. When the body secretes insufficient progesterone, the uterine decidua will be underdeveloped, thus affecting the development of the fertilized egg and easily causing miscarriage. If prostaglandins increase, it will cause frequent contractions of the uterine muscles, which can also lead to miscarriage. Reduced thyroid function can cause cell oxidation capacity disorders, which in turn affects the growth and development of the embryo and causes miscarriage.

Systemic diseases of pregnant women: pregnant women with acute infectious diseases such as influenza, typhoid fever, pneumonia, etc., bacterial toxins or viruses enter the fetus through the placenta, causing fetal poisoning and death. High fever can promote uterine contraction and cause miscarriage. Pregnant women with chronic diseases such as severe anemia, heart failure, chronic nephritis and hypertension can cause fetal disability and miscarriage due to placental infarction and intrauterine hypoxia. Malnutrition of pregnant women, especially vitamin deficiency, as well as mercury, lead and alcohol poisoning can all cause miscarriage.

Trauma: The pregnant woman's abdomen is hit or squeezed by external force, or she falls or participates in heavy physical labor or strenuous sports; abdominal surgery such as appendicitis or ovarian cyst surgery can cause uterine contraction and miscarriage.

Placental maldevelopment: The fetus grows and develops in the mother's body, and the mother's nutrients and oxygen are mainly transported to the fetus through the placenta. If the placenta is maldeveloped or diseased, the fetus will not get nutrients and oxygen and will stop growing, causing miscarriage.

The above is an introduction to the causes of spontaneous abortion. I hope it will be helpful to you. Everyone should take precautions in their lives.