What is the recommended oxygen flow rate via nasal cannula?

The recommended oxygen flow rate via nasal cannula is 1 to 6 liters per minute. This flow range is appropriate for delivering supplemental oxygen to patients who require minimal respiratory support. At this rate, the patient can receive supplemental oxygen while still maintaining a comfortable level of humidity and avoiding excessive oxygen concentration, which could lead to respiratory complications.

Higher flow rates, such as those suggested by some of the other choices, may be used in specific situations but can cause discomfort to the patient and increase the risk of nasal mucosa irritation. Additionally, flow rates exceeding 6 liters per minute are typically not recommended for nasal cannula use, as they can lead to airway dryness and may not effectively increase oxygen delivery due to high dilution with ambient air. This understanding of nasal cannula functionality emphasizes the importance of adhering to the established guidelines to ensure patient safety and comfort while managing oxygen therapy.