What Is Erythroblastosis Fetalis?

Fetal nucleated erythrocytosis is a passive immune disease with hemolysis as the main damage caused by the incompatibility of the fetus with the mother's red blood cell antigen. It occurs in the fetus or newborn. Placental bleeding during pregnancy and placental detachment during delivery can allow a small amount of fetal red blood cells to enter the mother's blood circulation. If the blood group antigen from the father is exactly what the mother lacks, the mother will be sensitized to produce the corresponding immune incomplete antibody lgG. ^[1]