What is the immediate action upon suspecting a blood transfusion reaction?

The immediate action upon suspecting a blood transfusion reaction is to stop the transfusion and notify the physician. This is critical because stopping the transfusion prevents further exposure to potentially harmful blood products that could exacerbate the reaction. By halting the process, healthcare providers can initiate the appropriate interventions to manage the patient's safety and health.

Additionally, notifying the physician ensures that medical professionals are informed and can evaluate the patient's condition promptly, potentially initiating further assessments or treatments based on the symptoms presented. Managing a transfusion reaction swiftly is crucial since delayed intervention can lead to serious complications for the patient.

While checking the patient’s blood type and calling the blood bank may be necessary steps later in the process, they are not immediate actions when a reaction is suspected. Continuing with the infusion poses significant risks and should never be done when there is a concern for transfusion reactions.