Which device would you choose to deliver higher FiO2 with less complexity than venturi masks, using a reservoir to increase the oxygen concentration?

Which device would you choose to deliver higher FiO2 with less complexity than venturi masks, using a reservoir to increase the oxygen concentration?

• A. Reservoir masks
• B. Nasal cannula
• C. Venturi mask
• D. Simple face mask

Answer: (A)

Delivering a high FiO2 with a simple setup is the idea here. A reservoir mask uses a bag that collects oxygen so the next breath draws from a larger supply, boosting the concentration the patient inhales. The one-way valves help prevent exhaled gas from filling the reservoir, reducing dilution and allowing clearer delivery of oxygen. Because of this design, you can achieve higher FiO2 than with a nasal cannula or a plain simple mask, and you don’t rely on the precise mixing mechanics of a venturi system. The FiO2 you get still depends on keeping a good mask seal and providing enough flow to keep the reservoir inflated, but overall it’s a straightforward, high-concentration option. In contrast, a nasal cannula delivers relatively low FiO2, and a simple mask without a reservoir can’t reach the same high concentrations. A venturi mask provides accurate FiO2 but requires specific adapters and careful adjustment, which makes it more complex.

Delivering a high FiO2 with a simple setup is the idea here. A reservoir mask uses a bag that collects oxygen so the next breath draws from a larger supply, boosting the concentration the patient inhales. The one-way valves help prevent exhaled gas from filling the reservoir, reducing dilution and allowing clearer delivery of oxygen.

Because of this design, you can achieve higher FiO2 than with a nasal cannula or a plain simple mask, and you don’t rely on the precise mixing mechanics of a venturi system. The FiO2 you get still depends on keeping a good mask seal and providing enough flow to keep the reservoir inflated, but overall it’s a straightforward, high-concentration option.

In contrast, a nasal cannula delivers relatively low FiO2, and a simple mask without a reservoir can’t reach the same high concentrations. A venturi mask provides accurate FiO2 but requires specific adapters and careful adjustment, which makes it more complex.