What is the flow rate range typically used for nasal cannula delivery of oxygen?

The flow rate range typically used for nasal cannula delivery of oxygen is 1 to 6 liters per minute. This range is widely accepted in clinical practice as it allows for adequate oxygen delivery while maintaining patient comfort and minimizing the risk of drying out the nasal mucosa. At lower flow rates, such as those found in the range of 1 to 2 liters per minute, patients can receive mild oxygen supplementation, which is suitable for those with mild hypoxia or those requiring home oxygen therapy.

As the flow increases to around 4 to 6 liters per minute, the oxygen concentration delivered increases, making it beneficial for patients with more significant respiratory distress or those in acute care settings. However, exceeding this range can lead to discomfort, nasal irritation, or the development of complications like nasal bleeding. Therefore, the range of 1 to 6 liters per minute provides a balance between effective oxygenation and patient tolerance, making it the standard recommendation for nasal cannula use.