A nurse is caring for a client who develops urticaria (hives) and itching during a blood transfusion. The nurse suspects an allergic transfusion reaction. What is the appropriate nursing action?

A) Correct: The nurse should verify the client's identity and blood type with two unique identifiers, such as asking the client to state their full name and date of birth and comparing it to their identification band. This step ensures that the correct blood product is administered to the right client, promoting safety.

B) Incorrect: Confirming the expiration date of the blood product is important but not the first step in ensuring client safety during a blood transfusion. The nurse should first verify the client's identity and blood type.

C) Incorrect: Assessing the client's vital signs is essential, but it is not the first action to be taken. Verifying the client's identity and blood type is the priority before starting the transfusion.

D) Incorrect: Obtaining informed consent from the client is crucial but not the first action to be taken. The nurse should first verify the client's identity and blood type before seeking consent for the transfusion.

A) Correct: Red blood cells are the main blood component involved in the crossmatching process. Crossmatching ensures compatibility between the donor's red blood cells and the recipient's plasma, preventing adverse reactions during the transfusion.

B) Incorrect: White blood cells are not part of the crossmatching process. They play a role in the immune response but are not specifically assessed during crossmatching.

C) Incorrect: Platelets are not directly involved in the crossmatching process. Crossmatching primarily focuses on red blood cell compatibility.

D) Incorrect: Plasma is not directly involved in the crossmatching process. The focus is on ensuring compatibility between red blood cells and the recipient's plasma.