How Does Hemolytic Disease of the Fetus and Newborn (HDFN)

question 4

Multiple Choice

How does hemolytic disease of the fetus and newborn (HDFN) cause acquired congenital hemolytic anemia?

• A)HDFN develops when hypoxia or dehydration causes the erythrocytes to change shapes, which are then recognized as foreign and removed from circulation.
• B)HDFN is an alloimmune disease in which the mother's immune system produces antibodies against fetal erythrocytes, which are recognized as foreign and removed from circulation.
• C)HDFN develops when the polycythemia present in fetal life continues after birth, causing the excessive number of erythrocytes to be removed from circulation.
• D)HDFN is an autoimmune disease in which the fetus's immune system produces antibodies against fetal erythrocytes, which are recognized as foreign and removed from circulation.

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