A patient is receiving a transfusion of packed red blood cells. Shortly after initiation of the transfusion, the patient begins to exhibit signs and symptoms of a transfusion reaction. The patient is suffering from which type of hypersensitivity?
A) Anaphylactic (type 1)
B) Cytotoxic (type II)
C) Immunecomplex (type III)
D) Delayed type (type IV)
Ans: B
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A type II hypersensitivity reaction resulting in red blood cell destruction is associated with blood transfusions. This type of reaction does not result from types I, III, or IV reactions.
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