Table 1:
The flow rate and approximate for different FiO
2
oxygen delivery devices:
Oxygen delivery devices
Flow rate (litre/min)
Approximate FiO
2
Nasal cannula
1-6
0.24-0.44
Simple face mask
5-8
0.40-0.60
Partial rebreathing mask
6-10
0.60-0.80
Non rebreathing mask
10-15
0.90-1.00
Venturi mask
2-15
0.24-0.60