For a 67-year-old man with pulmonary edema breathing at 35/min, which O2 delivery system is most appropriate?

In cases of pulmonary edema, there is a need for significant oxygen delivery due to compromised gas exchange and possible hypoxemia. A non-rebreather mask is designed to provide high concentrations of oxygen, often delivering nearly 100% oxygen to the patient. This can be particularly beneficial for a patient who is experiencing respiratory distress and has an elevated respiratory rate, such as the 67-year-old man in this scenario.

The high flow provided by a non-rebreather mask ensures that the patient receives the necessary oxygen to help alleviate the symptoms of pulmonary edema, which may include difficulty breathing and hypoxia. The mask includes reservoir bags that help to maintain a supply of oxygen while allowing the patient to inhale it efficiently without significant dilution from ambient air.

Other oxygen delivery systems, such as simple masks or nasal cannulas, would not provide the same degree of oxygenation. Simple masks deliver oxygen but are less effective in critical situations because they can allow for partial rebreathing of exhaled air. A nasal cannula, while comfortable for lower levels of oxygen delivery, typically cannot meet the high demands of a patient in significant respiratory distress. The Venturi mask is beneficial for controlled oxygen delivery but would not provide the necessary high concentration needed for someone in acute pulmonary