This is mainly because the B antigen contained in the baby is not found in the mother. During pregnancy, a very small amount of baby red blood cells will enter the mother's body, thus stimulating the mother to produce corresponding antibodies. These immune antibodies will enter the baby through the placenta, causing hemolysis of the baby. Therefore, if the mother is type O blood and the father is type B blood, it may lead to hemolysis of the baby. Generally, blood type should be tested before pregnancy. If the mother is blood type O and the father is blood type A, blood type B or blood type AB, the antibody titer of the mother should be determined.
If the expectant mother is type O, don't worry too much. If the prospective father is blood type A, B or ab, the probability of blood group incompatibility during pregnancy may be only 20%, and the probability of hemolysis of newborn may be only1150.
Speaking of this, many people may understand that if the mother is type O blood and the father is type B blood, then the possibility of hemolysis in the future is very small. Even if this is possible, parents should not worry too much. Timely prevention or some adjustment measures can help you.
Some people want to know, what are the symptoms if hemolysis occurs? In fact, jaundice is the main symptom of neonatal hemolysis, which mostly appears 2~3 days after birth. Sometimes babies with hemolytic symptoms will have different degrees of anemia, but usually the degree is relatively light and has little impact on daily life. Some babies who spell Chinese may have edema or heart failure.
Some babies may be nervous and even resist drinking milk, and their limbs may have some stiff symptoms and even bow. Because indirect bilirubin enters the brain tissue, it is easy to damage the brain tissue and cause some problems for the baby.
I hope all pregnant women or pregnant women can pay more attention to this problem, which can also help you get better prevention or adjustment.