What is the recommended flow for a non-rebreather mask?

What is the recommended flow for a non-rebreather mask?

• A. 6-8 LPM
• B. 2-6 LPM
• C. 10-15 LPM
• D. 15 LPM

Answer: (C)

The key idea is delivering a high concentration of oxygen by keeping the non-rebreather reservoir filled so the patient inhales mostly oxygen and not room air. To do that, you set a flow high enough to meet the patient’s inspiratory needs and keep the bag inflated. The recommended flow is 10 to 15 liters per minute. At this range, the mask can deliver a high FiO2 (often around 80–95% with a good seal). If the flow is too low, the bag deflates during inhalation, room air leaks in through the vents, and the inspired oxygen concentration drops. Higher flows help ensure the bag stays full and maximize oxygen delivery.

The key idea is delivering a high concentration of oxygen by keeping the non-rebreather reservoir filled so the patient inhales mostly oxygen and not room air. To do that, you set a flow high enough to meet the patient’s inspiratory needs and keep the bag inflated. The recommended flow is 10 to 15 liters per minute. At this range, the mask can deliver a high FiO2 (often around 80–95% with a good seal). If the flow is too low, the bag deflates during inhalation, room air leaks in through the vents, and the inspired oxygen concentration drops. Higher flows help ensure the bag stays full and maximize oxygen delivery.