Biology wrong blood type?

Question

Technically, why can it be dangerous to administer the wrong blood type to an individual

Answer 1

Type A RBCs contain "anti-B" antibodies and "A" antigens and type B RBCs contain "anti-A" antibodies and "B" antigens.  So, as the previous poster mentioned, if you give "B" blood to a type A recipient, you will be introducing an antigen to which the recipient has antibodies, which can trigger an immune response.  The universal donor, type O, does not contain the "A" or "B" antigens, so it will not cause this problem.  Similarly, if you are type AB, you are a universal recipient, because your blood cells do not have "anti-A" or "anti-B" antibodies.

Answer 2

It is not only dangerous, it can be fatal.

Different blood types "fight" with each other, and cause clotting.

If a patient is transfused with the wrong blood type, the types mix ALL OVER the patients body, causing the blood to clot everywhere.  When blood clots in the heart, brain, or lungs, the patient dies.

This was in fact the way that they found out that there were blood types.  During early transfusion experiments, many patients died.  Doctors soon learned to mix small blood samples to see if the donor and the patient were compatible.  Other doctors began to experiment and "catalog" types, eventually coming up with the now-famous A,B, AB, and O types.  Some other scientists figured out what the "clotting factor" was, and now these tests are done with simple chemicals.

Answer 3

Because the body looks as it as a foreign invader, if your already needing blood to stay alive, you dont  want to have the body working on another process, except for 0 blood, blood protein receptors can only except a certain type of blood