What is the first action to take if a transfusion reaction is suspected?

When a transfusion reaction is suspected, the immediate and most critical action is to stop the blood transfusion and start saline infusion. This action is essential for several reasons:

1. Prevent Further Complications: Stopping the transfusion halts any potential damage that may be occurring due to the reaction. Continuing the transfusion can exacerbate the reaction and lead to more severe consequences for the patient.

2. Maintain Venous Access: By starting saline, you ensure that there is still venous access for administering medications or other treatments that may be necessary to manage the reaction.

3. Standard Protocol: Medical protocols for handling transfusion reactions emphasize stopping the transfusion first. This is a guideline practiced universally to prioritize patient safety.

By initiating saline after stopping the blood, the healthcare provider can also help flush the blood out of the IV line and prepare to administer any necessary medications as ordered for the reaction.