Airway And Ventillation Flashcards
What is the most common airway obstruction?
The tongue
What are the indications for an OPA?
- unresponsive
- no gag reflex
What are the indications for supraglottic airway?
- GCS 3
- SPO2 < 92%
- RR ≤ 9
- BVM ineffective
What can happen if an OPA is incorrectly inserted or sized?
- push tongue into pharynx causing obstruction
- rough insertion can damage hard palate causing bleeding
What are the types of oxygen cylinders?
D 340L
CD 460L
F 1360L
Composition of inspired air?
NITROGEN 79%
OXYGEN 21%
CARBON DIOXIDE .04%
VARIABLE WATER VAPOUR
Composition of expired air?
NITROGEN 79%
OXYGEN 16%
CARBON DIOXIDE 4%
WATER VAPOUR 1%
What is the flow rate L/m and FiO2 for a nasal cannula
1 - 24%
2 - 28%
4 - 36%
5 - 40%
6 - 44%
What is the flow rate L/m and FiO2 for a Venturi valve n mask?
BLUE WAS OBVIOUSLY YOUR RIGHT GUESS
BLUE - 2 - 24%
WHITE - 4 - 28%
ORANGE - 6 - 31%
YELLOW - 8 - 35%
RED - 10 - 40%
GREEN - 15 - 60%
What is the flow rate L/m and FiO2 for a Non-rebreather mask?
10-15L @ 60-90%
What is the short hand for fraction of inspired air
FiO2
What is the FiO2 of inspired air?
21%
Considerations for a Non-rebreather mask?
- patients respirations must be adequate depth to draw air from reservoir bag into lungs
- patient with reduced tidal volume will benefit very little
- use BVM instead
In a prehospital setting, when is a nasal cannula contraindicated?
- if patient is mouth breather
- if patient Is severely hypoxic
- is patient is apneoic
- if patient has poor respiratory effort
What is the flow rate and FiO2 of a pocket mask?
50% @10LpM
60% @ 15LpM
