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why is it important to know a person's rhesus Factor before a blood transfusion

A patient who is Rh+ can receive Rh- blood
A patient who is Rh- can receive Rh+ blood
A patient who is Rh+ can receive only RH+blood
A patient who is Rh- can receive only Rh- blood ​

Answer :

Answer:

Rh negative can only receive Rh negative blood

Explanation:

When a person has Rh negative blood and receives a transfusion of Rh positive blood, the body does not recognize the antigen and attacks it as if it were an invader. This makes the person’s body essentially attack itself.