Which oxygen delivery device is suitable for short-term use and allows eating and drinking, delivering up to 44% oxygen?

• A. Nasal Cannula
• B. Simple Face Mask
• C. Non-Rebreather
• D. Venturi Mask

Answer: (A)

Starting with the main idea: for short-term oxygen needs where the patient will be eating or drinking, a nasal cannula is the best fit because it delivers oxygen without covering the mouth. The nasal prongs sit in the nostrils, leaving the lips and mouth free, so the patient can eat and drink safely while receiving supplemental oxygen.

A nasal cannula provides a low to moderate FiO2, typically up to about 44% depending on the flow rate. This makes it ideal for mild hypoxemia or when the oxygen requirement isn’t very high, and comfort is important for a short period. It’s more comfortable for longer use and easier to adjust as the patient’s needs change.

Other devices deliver higher concentrations of oxygen and involve a mask that covers the mouth, which interferes with eating and drinking; they’re better suited for situations requiring higher FiO2 or precise control but aren’t compatible with meals. Also, when using a nasal cannula, be mindful of nasal dryness and consider humidification if needed.