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) 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) Incorrect: Fever and chills during a blood transfusion may be signs of a febrile transfusion reaction, not an allergic reaction. The nurse should provide information specific to preventing allergic reactions.

B) Correct: Itching, rash, and facial swelling are common signs of an allergic transfusion reaction. The nurse should instruct the client to notify the healthcare provider immediately if they experience these symptoms.

C) Incorrect: A brief period of increased heart rate after the transfusion may be normal, but it is not specific to preventing an allergic transfusion reaction. The nurse should focus on providing information about allergic reaction symptoms.

D) Incorrect: Lower back pain is not typically associated with allergic transfusion reactions. The nurse should provide information about symptoms that indicate an allergic reaction, such as itching, rash, and facial swelling.