Does blood type have anything to do with recurrent miscarriage?

Patient's question:

Left me, when I was doing an ultrasound at 2 months pregnant, it was found that the baby did not have a heartbeat. At that time, my husband and I were very upset. This was the child we had been looking forward to, and it was also my first child. How could this happen? I searched online and found that if the blood type is not compatible, it is easy to form fetal demise, which then leads to miscarriage. I was very scared. Will I be able to have a baby again in the future?

Doctor's answer:

Hello, if the blood types of the couple are incompatible, the fetus may inherit the blood type antigen lacking from the mother from the father. Once these red blood cells enter the mother's body, the mother's body will produce antibodies. These antibodies can pass through the placenta into the fetus, which may lead to the destruction of the baby's red blood cells. Embryonic arrest is just one of the adverse consequences.
Is early embryonic arrest related to blood type incompatibility? Experts from the Gynecological Diagnosis and Treatment Center of Beijing Military Region Hospital emphasize that if the couple discovers blood type incompatibility before pregnancy, they should strengthen monitoring during pregnancy. After three months of pregnancy, women can undergo a serum antibody titer test. If the wife is type O blood and the husband is type A, B, or AB blood, there may be ABO blood type incompatibility between mother and fetus. If the wife is Rh-negative and the husband is Rh-positive, there may be Rh blood type incompatibility between mother and fetus.
Is early embryonic arrest related to blood type incompatibility? In addition to blood type incompatibility, other reasons that can lead to embryonic arrest include the relationship between autoimmune antibodies and embryonic arrest, such as the presence of antisperm antibodies or anti-endometrial antibodies; the relationship between endocrine abnormalities and embryonic arrest, such as hyperprolactinemia or hyperprogesterone; the relationship between Mycoplasma genitalium infection and embryonic arrest, as well as other factors such as chromosomal abnormalities.

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