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6663 Gynaecology & Obstetrics

A 32-year-old primigravida woman at 20 weeks with blood group O positive and her husband has blood group AB positive. Which of the following is the most appropriate response to this patient’s query that she and her husband have different blood groups and have already a pregnancy to deal with ?

AABO antigens elicit only an IgM response which do not cross the placenta.
BAntibodies to ABO antigens are not hemolytic
CNewborns affected by ABO incompatibility will have only mild hemolytic disease
DShe is not at risk as the immune response is depressed during pregnancy
Gynaecology & Obstetrics
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