Question

What complications will arise if the blood of an Rh${}^{+}$ person is transfused to a Rh${}^{-}$ person and vice versa?

Answer 1

People who have Rh factors in their blood are called "Rh positive." People without these factors are called "Rh negative." Rh negative people form antibodies against Rh factor if they receive Rh positive blood. This process causes the transfusion reaction. The immune system attacks the donated blood cells, causing them to burst.

Complication: The Rh antibodies can cross the placenta and attack the baby's red blood cells. This can lead to hemolytic anemia