II. Preparations: Partial Rebreathing Mask with reservoir
- Delivers 35-60% Oxygen at 6-10 L/min flow rate
- First third of exhaled gases mix with reservoir
- Exhaled gases from upper airway are oxygen rich
III. Preparations: Venturi Mask
- Delivers humidified oxygen (aerosol adapter available)
- Allows provider to dial in oxygen concentration
- Delivers 25-50% oxygen at 4-8 L/min flow rate
IV. Preparations: Simple Oxygen Mask
- In children use the Soft Vinyl Pediatric Mask
- Poorly tolerated by infants and toddlers
- Delivers humidified oxygen
- Delivers 35-60% Oxygen at 6-10 L/min flow rates
- Delivers 40% FIO2 at 6 L, 50% at 7 L, and 60% at 8 L
- Room air entrained during inspiration
- Reduced Oxygen Concentration if:
- High spontaneous inspiratory flow
- Mask is loose
- Oxygen flow into the mask is low
V. Preparations: Aerosol Mask
- Delivers aerosolized oxygen at 40-60% FIO2 at 10-15 L/min
- Tubing is attached to water bottle with dial regulator
- Dial is similar to Venturi adjustment for FIO2
- Some masks offer misleading FIO2 settings (these masks are unlikely to deliver >60% FIO2)
VI. Preparations: Tracheostomy Mask
- Delivers heated, aerosolized air or oxygen
- Attached to blender that allows dial adjustment for FIO2
- Delivers 40-60% FIO2 at a minimum flow rate of 8 L/min
VII. Preparations: Face Tent/Shield
- High-flow, soft plastic "bucket" over nose and mouth
- Better tolerated than Face Mask
- Delivers only 40% Oxygen at 10-15 liters per minute
VIII. References
- (1997) Pediatric Advanced Life Support, AHA, p. 4-5 to 4-7
- (2016) Fundamental Critical Care Support, SCCM, p. 45-60