(Redirected from O2)
Standard Administration Options
|Venturi mask||24-50%||Increasing flow will not alter FiO2|
|Oxygen tent||10-15||21-50%||Used mainly on children with croup or pneumonia|
|Simple mask||5-15||35-55%||Never used at flows less than 5 L/min to prevent rebreathing of CO2|
|Trach mask||10-15||35-60%||Adequate flow shown by mist flowing out the exhalation port at all times|
|Partial rebreathing mask||8-15||35-60%||Flow rate must be sufficient to keep bag 1/3 to 1/2 inflated at all times|
|Non-rebreathing mask||8-15 (or max)||60-99%||Flow rate must be sufficient to keep bag 1/3 to 1/2 inflated at all times|
High-flow Nasal Cannula
- Different Setup to low-flow O2 therapy
- Good for hypoxemic respiratory failure
- Every 10L/min is similar to 1mmHg PEEP
- Set flow and FiO2%
- Flow - start with 0.5 L/kg/min (Max 60L)
- FiO2 - start with 100% and taper down from there
- FiO2 - Start 40% and titrate up
- Flow - based on their age and weight.
- <1 yr - 2 L/kg/min.
- >1yr - 1 L/kg/min.
Hyperbaric Oxygen (HBO)
- Two methods of administration
- Small, single-occupant chamber filled with 100% oxygen and pressurized to desired level
- Large, multi-occupant chamber filled with room air and pressurized to desired level - occupants breathe supplemental oxygen at ambient pressure via mask
- Rationale for use
- At normal pressures (even with supplemental oxygen administration), very little oxygen is dissolved in plasma
- When oxygen provided at 3 ATA, there is enough oxygen dissolved in plasma to oxygenate all body tissues without resorting to hemoglobin-bound oxygen
- Bitterman H. Bench-to-bedside review: Oxygen as a drug. Critical Care. 2009;13(1):205. doi:10.1186/cc7151.