A 70-year-old male with a diagnosis of pneumonia is admitted…
A 70-year-old male with a diagnosis of pneumonia is admitted to the hospital with increased shortness of breath and a SpO2 of 85% on 4L of oxygen per nasal cannula. He is alert but mildly anxious and able to speak in full sentences. Which oxygen delivery device should the nurse choose to improve his oxygenation while ensuring adequate oxygen levels?