Human Factors Flashcards
1
Q
Where is pressure half of what it is at sea level?
A
18,000’
2
Q
What are the 2 main effects of decreased pressure on the body?
A
- Fall in pressure gradient in which oxygen is delivered to lungs
- Expansion of bodily gases
3
Q
What is Hypoxia?
A
Inadequate oxygenation of body’s tissues
4
Q
What are the 4 Types of Hypoxia?
A
Hypoxic - Inadequate oxygen in air
Anaemic - Too few blood cells (CO)
Stagnant - G force
Histotoxic - Poison
5
Q
What is the Time of Useful Consciousness at 10, 20, 30, 40 and >45,000’?
A
10 - Hours
20 - 5 - 12 mins
30 - 45 - 75 secs
40 - 15 - 30 secs
>45 - 12 - 15 secs
6
Q
What is Hyperventilation?
A
Breathing more rapidly than necessary
