A 55-Year-Old Man Comes to the Emergency Department on a Nonrebreathing

A 55-year-old man comes to the emergency department on a nonrebreathing mask with an SpO₂ of 88%.The patient was found unconscious in a running car in the garage.Carbon monoxide poisoning is a concern at this time.What should the respiratory care practitioner recommend to the physician at this time?

A) Place a nasal cannula at 6 L/min on the patient.
B) Begin the patient on heliox therapy 80%:20%.
C) Place the patient on carbogen therapy 5%:95%.
D) Set the patient up on an air-entrainment device at 0.50 FɪO₂.