A nurse is preparing to administer a blood component to a client. Which blood component is responsible for promoting clot formation and controlling bleeding?

A) Stopping the blood transfusion immediately is the nurse's priority action if a transfusion reaction is suspected. This helps prevent further infusion of the potentially incompatible or problematic blood product.

B) Notifying the blood bank is essential to report the suspected transfusion reaction and to facilitate investigation and documentation. However, stopping the transfusion is the first step.

C) Administering antipyretics may help manage the client's fever, but it is not the nurse's priority action when a transfusion reaction is suspected.

D) Placing the client in a supine position with legs elevated is not a priority action when a transfusion reaction is suspected. The priority is to stop the transfusion and assess the client's vital signs and symptoms.

A) Correct: The client's symptoms of respiratory distress and chest pain indicate a potential transfusion-related acute lung injury (TRALI), a severe transfusion reaction. The nurse's priority intervention is to administer oxygen via a non-rebreather mask to improve oxygenation.

B) Incorrect: Discontinuing the blood transfusion immediately is necessary in suspected cases of TRALI, but it is not the priority intervention. First, the nurse should provide immediate respiratory support by administering oxygen.

C) Incorrect: Elevating the client's feet and lowering the head (Trendelenburg position) is not indicated for TRALI. It may be used for clients in shock, but the priority is to manage the client's respiratory distress and chest pain.

D) Incorrect: Administering diuretics is not the priority intervention for TRALI. TRALI is caused by a reaction to plasma components, not fluid overload, and diuretics may not address the underlying cause.