I often hear that “Sanguan incompatibility” causes breakup, and “eight character incompatibility” is not suitable for marriage, but have you ever heard that “blood type incompatibility” causes more pregnancy?

Parents blood type incompatibility, the child may hemolysis?!

Pregnant mothers are of these two blood types. Please note that there is a bit of trouble after pregnancy

1、 Pregnant mothers have type O blood

In our common ABO blood group system, if the pregnant mother is of type O blood, but the father to be is of type A / B / AB blood, then we should pay attention to it. It is best for pregnant women to do ABO hemolysis test during the prenatal examination, because the fetus is prone to hemolysis.

For example, if you have type O blood and your father to be is a type, B type or AB type, then your baby’s blood type may be a type or B type.

Because you don’t have a, B antigens in your red blood cells. Therefore, when you are pregnant or have a baby, the red blood cells in your baby’s body enter your body, which may cause blood group incompatibility, antibody production and hemolysis.

Of course, even if the blood type of you and your husband is exactly the same as that of quack, the doctor will arrange you to have a regular hemolytic antibody titer test. The first time is about 16 weeks, the second time is 28-30 weeks, and then you will have a regular review.

Different doctors may have different arrangements.

The purpose of this is to regularly check the antibody in your blood and monitor the possibility of hemolysis in your baby.

But don’t worry too much, because fortunately, not all babies will have hemolysis. Only about a quarter of babies will have blood type incompatibility with their mothers. Most of the symptoms are mild, mainly manifested as hemolytic jaundice or hemolytic anemia.

2、 The pregnant mother is Rh negative

In the rare Rh blood group system, if the pregnant mother is RH positive blood group, don’t worry, during pregnancy will not cause fetal intrauterine hemolysis.

But if the pregnant mother is Rh negative, the situation is completely different.

As long as you have a previous pregnancy, whether it is early abortion, or full-term delivery, as long as you have a pregnancy, in the second pregnancy, it is easy to have fetal intrauterine hemolysis.

Compared with ABO hemolysis, Rh hemolysis is more serious. Because it may cause severe intrauterine hemolysis, resulting in fetal death.


Because the pregnant mother who has been pregnant once will produce RH antibody in the body, and this antibody will dissolve and destroy the red blood cells of the fetus through the placenta, causing hemolysis.

For RH negative mothers, please note:

The first pregnancy: doctors usually recommend the injection of anti-D blocking antibody within 24 hours after the end of pregnancy, which can reduce the production of maternal antibodies and greatly reduce the risk of fetal intrauterine hemolysis in the second pregnancy.

Second pregnancy: corresponding monitoring during pregnancy, including antibody examination and ultrasound examination. Even if the occurrence of RH hemolysis, expectant mothers do not have to worry too much, because the existing technology, even if it is a serious hemolytic fetus, can also be treated by intrauterine blood transfusion.


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