What is the % of O2 the patient is actually getting?

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Nasal Cannula:24-44%

Face Mask: 40-60%

Partial Rebreather:60-75%

Non-Rebreather:80-95%

Venturi Mask: 24-55%

Aerosol mask, face tent, T-Piece: 24%-100%

Question is: These percentages, are they the total FiO2 the patient is getting INCLUDING ROOM AIR?

Thanks.

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My understanding is that RA is included for a nasal cannula. The first liter of oxygen adds 3% to the 21% room air, and then it goes up by 4% each liter up to 6. The underlying logic gets more complicated when you start thinking about recirculating exhaled air or making a tight seal to shut out room air, but the percentages you've posted are what you generally want to know when understanding oxygen therapy.

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Nasal Cannula:24-44%

Face Mask: 40-60%

Partial Rebreather:60-75%

Non-Rebreather:80-95%

Venturi Mask: 24-55%

Aerosol mask, face tent, T-Piece: 24%-100%

Question is: These percentages, are they the total FiO2 the patient is getting INCLUDING ROOM AIR?

Thanks.

Kinda has to be, right?

If not, then you'd add 21% to each number and have FiO2 > 100% which is impossible.

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