What is the flow rate range for supplemental oxygen via nasal cannula?

The flow rate range for supplemental oxygen via nasal cannula is typically established at 1 to 6 liters per minute. This range is optimal for delivering supplemental oxygen while ensuring patient comfort and effective oxygenation. At flow rates within this range, the nasal cannula can provide an appropriate oxygen concentration without causing discomfort or irritation in the nasal passages.

When oxygen is delivered at rates lower than 1 liter per minute, patients may not receive adequate oxygenation, and rates exceeding 6 liters per minute can result in discomfort and may lead to insufficient humidification, potentially irritating the respiratory tract. Thus, maintaining the flow rate within the 1 to 6 liters per minute range is critical for patient safety and efficacy in oxygen delivery.