Will a female with RH blood type definitely have a hemolytic disease in her second child?

Patient's question:

First pregnancy miscarriage, will the second one definitely cause hemolysis?

Doctor's answer:

Analysis of the condition: Hello: There is a possibility of hemolysis, but it is not certain to occur.
Advice: This is rarely seen in the first pregnancy. During pregnancy, the mother's body produces a small amount of antibodies, so the likelihood of passing them to the infant is relatively low. However, if a woman has received Rh-positive blood transfusions before pregnancy and then becomes pregnant again, the possibility of fetal hemolysis may increase. If a woman is in her second pregnancy or has had a miscarriage before, it is highly likely that the fetus may develop hemolytic reactions in the mother's body.

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