A patient has an order for 80% oxygen. Which oxygen delivery device will the nurse use to administer oxygen to this patient?

A nonrebreather mask is the correct device for delivering a high concentration of oxygen, approximately 60–90% or higher at flow rates of 10–15 L/min. It features a reservoir bag that fills with 100% oxygen and one-way valves that prevent exhaled air from re-entering the bag, maximizing inspired oxygen concentration. When an order specifies 80% oxygen, the nonrebreather mask is the only listed device capable of achieving that level. A nasal cannula delivers only 24–44% oxygen at flow rates of 1–6 L/min, far too low for an 80% requirement. A Venturi mask provides precise, controlled concentrations ranging from 24–50%, which is useful for patients requiring exact FiO₂ but cannot reach 80%. A simple face mask delivers approximately 35–50% oxygen at 6–10 L/min and also cannot reach the prescribed concentration. Therefore, among the options provided, the nonrebreather mask is the only device that can safely and effectively deliver oxygen at approximately 80%, making it the appropriate choice for this clinical order. Students should memorize the oxygen delivery ranges for each device as this is frequently tested.