What is the flow rate for a nasal cannula?

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What is the flow rate for a nasal cannula?

Nasal cannula delivers low-to-moderate oxygen concentrations by delivering oxygen through small prongs in the nostrils, and the flow rate is kept relatively low because the patient’s breaths mix with room air. The practical range for this device is about 2 to 6 liters per minute, which provides a modest increase in oxygen without causing unnecessary drying or discomfort. Going higher than 6 L/min doesn’t significantly raise the delivered FiO2 with a nasal cannula and can irritate the nasal mucosa; for higher oxygen needs, other devices are used, such as masks or high-flow systems. So the typical flow rate to use with a nasal cannula is 2–6 L/min.

Nasal cannula delivers low-to-moderate oxygen concentrations by delivering oxygen through small prongs in the nostrils, and the flow rate is kept relatively low because the patient’s breaths mix with room air. The practical range for this device is about 2 to 6 liters per minute, which provides a modest increase in oxygen without causing unnecessary drying or discomfort. Going higher than 6 L/min doesn’t significantly raise the delivered FiO2 with a nasal cannula and can irritate the nasal mucosa; for higher oxygen needs, other devices are used, such as masks or high-flow systems. So the typical flow rate to use with a nasal cannula is 2–6 L/min.

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