Question

In which of the following situations, there is a risk factor for children acquiring erythroblastosis foetalis?

• A. Mother is Rh–ve and father is Rh–ve
• B. Mother is Rh–ve and father is Rh+ve
• C. Mother is Rh+ve and father is Rh+ve
• D. Mother is Rh+ve and father is Rh–ve

Answer 1

The correct option is B Mother is Rh–ve and father is Rh+ve

There are two main causes of erythroblastosis fetalis: Rh incompatibility and ABO incompatibility. Rh incompatibility occurs when a Rh-negative mother is impregnated by a Rh-positive father. The result can be a Rh-positive baby. In such a case, your baby’s Rh antigens will be perceived as foreign invaders, the way viruses or bacteria are perceived. Your blood cells attack the baby’s as a protective mechanism that can end up harming the child. If you are pregnant with your first baby, Rh incompatibility is not as much of a concern. However, when the Rh-positive child is born, your body will create antibodies against the Rh factor. These antibodies will attack the blood cells if you ever become pregnant with another Rh-positive baby.