Transfusion with the wrong blood type can cause a severe reaction that may be life-threatening. If you have many blood transfusions, you are more likely to have problems from immune system reactions. A reaction causes your body to form antibodies that attack the new blood cells. But tests can help avoid this.
Can you survive getting the wrong blood type?
What is an ABO incompatibility reaction? An ABO incompatibility reaction can occur if you receive the wrong type of blood during a blood transfusion. Its a rare but serious and potentially fatal response to incompatible blood by your immune system.
What are the hazards of mismatched blood transfusion?
Mismatched transfusions in the ABO-system entail more or less severe intravascular hemolysis, in some cases even combined with multiorgan failure and death. This is due to severe antibody reactions between circulating allo-antibodies and the corresponding antigens of the mismatched red blood cells (RBC).