Causes of recurrent miscarriage

Recurrent miscarriage is very harmful and is an increasingly common disease. So what causes recurrent miscarriage? The causes of recurrent miscarriage are relatively complicated. There are many factors that cause recurrent miscarriage. Today I will give you a detailed introduction to the causes of recurrent miscarriage.

First, incomplete embryonic development and abnormal fertilized eggs are the main causes 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.

Second, endocrine dysfunction. The fertilized egg can implant on the uterine wall and grow into a fetus 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, thereby affecting the growth and development of the embryo and causing miscarriage.

Third, reproductive organ diseases. Uterine malformations such as bicornuate uterus, septate uterus, and uterine hypoplasia. Pelvic tumors, especially submucosal fibroids, can affect the growth and development of the fetus and lead to miscarriage. Uterine os relaxation or deep cervical lacerations can cause premature rupture of membranes and late miscarriage. Sudden emotional changes. Pregnant women are greatly stimulated, and excessive sadness, shock, fear, and excessive emotional excitement can cause environmental imbalance in the pregnant woman's body, prompting uterine contraction and causing miscarriage.

Fourth, pregnant women suffer from 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.

Fifth, trauma. The abdomen of pregnant women is hit or squeezed by external forces, or pregnant women fall or participate in heavy physical labor or intense sports. Abdominal surgery such as appendicitis or ovarian cyst surgery can cause uterine contraction and miscarriage. Placental dysplasia. 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 cannot get nutrients and oxygen and stops growing, causing miscarriage. Incompatibility of maternal and fetal blood types. Pregnant women have received blood transfusions in the past, or coagulant factors that are incompatible with blood types are produced during pregnancy, which will cause the fetus's body cells to agglutinate and hemolyze, thereby causing miscarriage.