A nurse is preparing to crossmatch blood for a client who requires a blood transfusion. Which blood component is involved in the crossmatching process?

A. Notifying the healthcare provider is important but should be done after stopping the transfusion to prevent further reaction.
B. Administering acetaminophen does not address the underlying cause of the reaction and should not be the priority.
C. Stopping the transfusion and disconnecting the IV tubing is the first priority to prevent further exposure to the incompatible blood product, which could lead to a life-threatening hemolytic reaction.
D. Infusing normal saline is appropriate to maintain hydration, but it should be done after stopping the transfusion.

A) Incorrect: Elevating the head of the bed may help promote lung expansion, but it is not the nurse's priority action when the client is experiencing severe symptoms like dyspnea, tachycardia, and chest pain during a transfusion.

B) Incorrect: Administering diuretics is not the appropriate action for the client's symptoms, which suggest a possible transfusion-related acute lung injury (TRALI) or acute hemolytic transfusion reaction. Diuretics will not address the underlying cause.

C) Correct: The client's symptoms of dyspnea, tachycardia, and chest pain indicate a potential severe transfusion reaction. The nurse's priority action is to stop the transfusion immediately and notify the healthcare provider for further evaluation and intervention.

D) Incorrect: Continuing the transfusion at a slower rate is not appropriate when the client is experiencing severe symptoms. The nurse should first stop the transfusion and then notify the healthcare provider.