Question

why is it important to know a persons rhesus factor before a blood transfusion?
a patient who is rh+ can receive only rh- blood.
a patient who is rh- can receive only rh+ blood.
a patient who is rh+ can receive only rh+ blood.
a patient who is rh- can receive only rh- blood.

Explanation:

Si un paciente Rh- recibe sangre Rh+, su cuerpo produce anticuerpos contra el factor Rh. Esto puede causar una reacción hemolítica grave en transfusiones posteriores. Por lo tanto, es crucial que un paciente Rh- solo reciba sangre Rh-.

Answer:

A patient who is Rh- can receive only Rh- blood.