This is kind of the opposite of what usually happens. During pregnancy, fetal red cells can cross the placenta causing an immune reaction in Mom. The antibodies from this reaction cross the placenta and can attack fetal red cells. There is a spectrum of severity ranging from hydrops fetalis to clinically insignificant. The antibodies linger in fetal circulation after birth and subsequent red cell destruction can contribute to jaundice. You can test for the presence of these antibodies with a Coombs test.
AmbilevousMD t1_j1qnjg8 wrote
Reply to comment by DisulfideBondage in What happens if a mother‘a child has a non-compatible blood type? What will happen when she is pregnant? by thebookklepto
This is kind of the opposite of what usually happens. During pregnancy, fetal red cells can cross the placenta causing an immune reaction in Mom. The antibodies from this reaction cross the placenta and can attack fetal red cells. There is a spectrum of severity ranging from hydrops fetalis to clinically insignificant. The antibodies linger in fetal circulation after birth and subsequent red cell destruction can contribute to jaundice. You can test for the presence of these antibodies with a Coombs test.