[Quick Guide] How does blood type (ABO) incompatibility affect pregnancies? Part 1

How does blood type (ABO) incompatibility affect pregnancies? Blood type (ABO) incompatibility is a complication that can occur during pregnancies and not only in blood transfusion. If left unchecked, it can lead to stillbirth. It is a serious threat to women living in less developed countries that have less than optimal healthcare systems.