Oxygen Delivery/Therapy Flashcards
ABG Lab Values
pH: 7.35-7.45
PaCO2: 35-45
PO2: 35-46
HCO3: 22-26
Fraction of Inspired Oxygen (FiO2)
the percentage of oxygen in the air that a person inhales
Concentration of O2 in ambient air
21%
Hazards/Complications of O2 Therapy
Combustion, Drying of mucous membranes, Infection
FiO2 delivered
24% = 1L/min
28% = 2L/min
32% = 3L/min
36% = 4L/min
40% = 5L/min
44% = 6L/min
(goes up by 4% per L/min)
Low Flow O2 Delivery Systems
Delivers O2 at a flow rate lower than patient’s inspiratory flow rate so it mixes with room air during inhalation
* Nasal Cannula (1-6L)
* Face Masks (Simple, Partial rebreather, Non-rebreather)
Nasal Cannula
- 1-6 L/min
- O2 concentration of 24%-44%
- Flow rate > 6 doesn’t increase O2 because deadspace is full
- Assess patency and changes in RR or depth
Simple Face Mask
- Delivers O2 up to 40%-60%
- Minimum 5L/min
- Monitor for risk of aspiration
Partial Rebreather
- 60% to 75% with flow of 6 to 11 L/min
- 1/3 exhaled tidal volume with each breath
- Adjust flow rate to keep reservoir bag inflated
Non-rebreather Mask
- Highest O2 level
- Can deliver greater than 90% with flow rates of 10-15L/min
- used for unstable patients requiring intubation
- ensures valves are patent and functional
High Flow Oxygen Delivery Systems
Can deliver 24% to 100% at 8-15 L/min. Flow rate exceeds patient’s inspiratory flow rate providing fixed/precise FiO2.
* Venturi Mask
* Face Tent
* Aerosol mask
* Tracheostomy collar
* T-piece
Venturi Mask
- Adaptor at the bottom of the mask adjusts O2 delivery
- delivers precise O2 concentration (best for chronic lung disease)
- switch to NC for meals
T-Piece
- Delivers desired FiO2 for Trach, Laryngectomy, ET tubes
- ensures humidification by creating mist (should be seen during inhalation and expiration
Tracheostomy
- Surgical incision into trachea for purpose of establishing airway
- temporary or permanent
