What happens if incompatible blood types are mixed

28 thg 7, Now experts know that if you mix blood from two people with different blood types, the blood can clump, which may be fatal. These antibodies don't develop until a mother is “sensitized,” which occurs when the mother's and baby's blood mix during pregnancy. This can happen if the. 13 thg 9, It is of the utmost importance that providers are aware of the potential for adverse reactions and human error when ordering or administering.