10 Liters is most manufacturer's recommended maximum
Room air is 21% oxygen. For every liter of oxygen delivered by nasal cannula add 4% for example: 1L= 24% 2L=28% 3L=32% and so on. Yes, its right but the formula of Lpm to FiO2 is: lpm*4+20 = FiO2 Example: 1L*4+20 = 24% 2L*4+20 = 28% 3L*4+20 = 32% and so on.
Each litre is equivelant to approximately 3%. 35% Oxygen is about 5 litresThis math here is only correct if you are using a nasal cannula to deliver the oxygen. Respiratory therapy only uses this as an estimate since the cannula isn't the most effective oxygen delivery system but is the most comfortable for a patient.21% Fio2 is room Air, that is we breath in normally, for anyone without any supplemental Oxygen.The first 1 liter is 3%Fio2, which is 21% +3% =24%Fio2, thereafter it is 4% to each liter flow of oxygenFirst liter of Oxygen which is 1Lpm =3% + 21%(Room Air) Total = 24% Fio2 Add 4% for each liter flow there 2Lpm= 28% Fio23Lpm= 32% Fio2Save4Lpm= 36% Fio25Lpm= 40% Fio26Lpm= 44% Fio2For a Venturi Mask which is more effective especially for patients with COPD the Fio2 settings are as follows:White cap:35% FiO2 set lpm at 940% FiO2 set lpm at 1250% FiO2 set lpm at 15Green cap:24% FiO2 set lpm at 3lpm26% FiO2 set lpm at 3lpm28% FiO2 set lpm at 6lpm30% FiO2 set lpm at 6 lpm
Increases FiO2
This is the percent of oxygen a patient is inhaling. Room air FiO2 is 21%. By applying supplemental oxygen, the FiO2 can go as high as 100%.
{(Pb-47)FIO2} - (PaCO2 X 1.25) "only use the 1.25 if FIO2 is >60%"
33
6 half liters make 3 liters in total.
15 Liters
6% of 270 liters is 16.2 liters.
6 US fluid ounces = 0.18 liters.
4 hours on 21% Fio2