With reservoir masks, the flow rate must be sufficient to keep the bag 1/3-1/2 inflated at all times to prevent what?

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Multiple Choice

With reservoir masks, the flow rate must be sufficient to keep the bag 1/3-1/2 inflated at all times to prevent what?

Explanation:
The key idea is that the reservoir bag on these masks acts as a small oxygen reservoir that you inhale from each breath. Keeping the bag about one-third to one-half full ensures there’s always fresh oxygen available for each inhalation and prevents you from drawing in your own exhaled gas. If the bag deflates, you can end up rebreathing CO2 from your previous breaths, which raises carbon dioxide levels in the blood (hypercapnia) and can worsen ventilation. So the purpose of maintaining that partial inflation is to prevent rebreathing CO2.

The key idea is that the reservoir bag on these masks acts as a small oxygen reservoir that you inhale from each breath. Keeping the bag about one-third to one-half full ensures there’s always fresh oxygen available for each inhalation and prevents you from drawing in your own exhaled gas. If the bag deflates, you can end up rebreathing CO2 from your previous breaths, which raises carbon dioxide levels in the blood (hypercapnia) and can worsen ventilation. So the purpose of maintaining that partial inflation is to prevent rebreathing CO2.

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