Which of these conditions must occur to produce hemolytic disease of the newborn (HDN)?

Question

Quizplus · Accepted Answer

Hemolytic disease of the newborn occurs when the mother has been sensitized to the Rh antigen (typically during a prior pregnancy or blood transfusion) and produces antibodies against it. These antibodies can then cross the placenta and attack the red blood cells of an Rh-positive fetus, leading to HDN. The other factors (first pregnancy, mother's Rh status, and baby's Rh status) may play a role in determining the severity of the disease, but they are not necessary for HDN to occur.

Which of These Conditions Must Occur to Produce Hemolytic Disease