Which device delivers oxygen at 2-6 LPM?

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Multiple Choice

Which device delivers oxygen at 2-6 LPM?

Explanation:
Oxygen is delivered in low to moderate flow most commonly with a nasal cannula, which is designed to be set anywhere from about 1 to 6 L/min. This range includes the 2–6 L/min window, making it the device that best fits that flow. It’s comfortable for ongoing use and allows the patient to talk or eat, and the delivered FiO2 increases with flow but stays relatively modest compared to masks. In contrast, non-rebreather and bag-valve masks require much higher flows to maintain their reservoirs and deliver higher FiO2, while a simple face mask typically operates at higher minimum flows (often around 5 L/min) and provides a different FiO2 profile.

Oxygen is delivered in low to moderate flow most commonly with a nasal cannula, which is designed to be set anywhere from about 1 to 6 L/min. This range includes the 2–6 L/min window, making it the device that best fits that flow. It’s comfortable for ongoing use and allows the patient to talk or eat, and the delivered FiO2 increases with flow but stays relatively modest compared to masks. In contrast, non-rebreather and bag-valve masks require much higher flows to maintain their reservoirs and deliver higher FiO2, while a simple face mask typically operates at higher minimum flows (often around 5 L/min) and provides a different FiO2 profile.

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