FiO2

FIO2 is the fraction of inspired oxygen in a gas mixture. [1]

• The FIO2's listed in the table below are 'ESTIMATES ONLY that we use for the collection of arterial blood gas (ABG's) data for APACHE II scoring purposes.
• The actual FiO2 that a patient gets varies due to a number of factors that are not accounted for in these estimates.

• if FIO2 being administered to a patient is <=49%, select the ABG with the WORST PO2.
• if FIO2 being administered to a patient is >=50%, select the ABG result with the WORST AaDO2.
• select the ABG (arterial blood gas) with the WORST AaDO2 or the WORST PO2, which ever one gives you the most APACHE II points in the first 24 hrs of ICU admission.

Nasal Prongs			Partial Rebreath Mask			Simple Flow Mask
Room Air	21%		8 LRB	65%		6 Lpm	35%
1 LNP	24%		10 LRB	65%		7 Lpm	40%
2LNP	28%		12 LRB	65%		8 Lpm	45%
3 LNP	32%		13 LRB	70%		9 Lpm	50%
4 LNP	36%		15 LRB	70%		10 Lpm	55%
5 LNP	40%		15 LRB + 5 L NP	70%
6 LNP	44%		10 LRB + 5 L NP	70%		Cold Pot
7 LNP	48%		10 LRB + 3 L NP	70%			35%
8 LNP	50%		15 LRB + 7 L NP	70%			40%
							50%
Non Rebreath Mask			Venturi Face Mask				70%
10 LNRB	70%		3 Lpm	24%			100%
15 LNRB	70%		4 Lpm	26%
20 LNRB	80%		5 Lpm	28%		BiPAP
25 LNRB	80%		6 Lpm	30%		5 L	40%
30 LNRB	80%		9 Lpm	35%		10 L	60%
100 LNRB	80%		12 Lpm	40%		15 L	70%
			15 Lpm	50%		Flush	70%