A Patient Involved in a House Fire Is Brought by Ambulance

A patient involved in a house fire is brought by ambulance to the emergency department.The patient is breathing spontaneously but appears agitated and does not respond appropriately to questions.The nurse knows the patient has inhaled carbon monoxide and probably has carbon monoxide (CO) poisoning.What action should the nurse take next?

A) Ask the practitioner to order a STAT chest radiograph.
B) Apply a pulse oximeter to one of his unburned fingers.
C) Call the local hyperbaric chamber to check on its availability.
D) Administer 100% high-flow oxygen via a nonrebreathing mask.