Pediatrics: ABO Incompatibility and Hemolytic Disease in Children of O Positive Mother and B Positive Father

Question

Will the child of a mother with O positive blood and a father with B positive blood have ABO incompatibility hemolytic disease?

Answer

If the mother has O positive blood and the father has A or B or AB blood type, the child could be A, B, or O. If the child is O positive, there will be no ABO incompatibility hemolytic disease. Only if the child is A or B positive could ABO incompatibility hemolytic disease occur.