Identify two common oxygen delivery devices and their typical FiO2 ranges.

Identify two common oxygen delivery devices and their typical FiO2 ranges.

• A. Nasal cannula 24-44% (up to 6 L/min); Simple face mask 40-60%
• B. Venturi mask 50-60%; Non-rebreather 90-100%
• C. Nasal cannula 15-25%; Simple face mask 30-40%
• D. Oxygen hood 80-100%; Face tent 70-90%

Answer: (A)

The idea being tested is which oxygen delivery devices nurses commonly use and what oxygen concentrations those devices typically deliver. The two most familiar devices in everyday care are the nasal cannula and the simple face mask. A nasal cannula supplies oxygen at low flow, delivering roughly 24–44% FiO2, with the actual concentration rising as flow increases but usually not exceeding about 6 L/min. It’s comfortable, allows talking and eating, and is ideal for mild oxygen needs. A simple face mask covers the nose and mouth and provides a higher FiO2 than a nasal cannula, typically around 40–60% when used at standard flow rates (about 5–6 L/min). This makes it a good choice when more oxygen is needed but you don’t require the precise control of a Venturi system or the very high concentrations of a non-rebreather. Keep in mind these ranges are approximate and depend on how the patient breathes, whether the mouth is open, and how well the mask fits. Oxygen hood or face tent, as well as devices like Venturi masks or non-rebreathers, exist and are used in various settings, but the combination of a nasal cannula and a simple face mask represents the pair most routinely encountered in general nursing care and their typical FiO2 ranges.

The idea being tested is which oxygen delivery devices nurses commonly use and what oxygen concentrations those devices typically deliver. The two most familiar devices in everyday care are the nasal cannula and the simple face mask. A nasal cannula supplies oxygen at low flow, delivering roughly 24–44% FiO2, with the actual concentration rising as flow increases but usually not exceeding about 6 L/min. It’s comfortable, allows talking and eating, and is ideal for mild oxygen needs. A simple face mask covers the nose and mouth and provides a higher FiO2 than a nasal cannula, typically around 40–60% when used at standard flow rates (about 5–6 L/min). This makes it a good choice when more oxygen is needed but you don’t require the precise control of a Venturi system or the very high concentrations of a non-rebreather.

Keep in mind these ranges are approximate and depend on how the patient breathes, whether the mouth is open, and how well the mask fits. Oxygen hood or face tent, as well as devices like Venturi masks or non-rebreathers, exist and are used in various settings, but the combination of a nasal cannula and a simple face mask represents the pair most routinely encountered in general nursing care and their typical FiO2 ranges.