HPL Flashcards
Human factors contribute to what percentage of accidents
70%
How to work out cardiac output
Pulse x stroke volume (/1000)
What causes an accident
Lack of good judgement
What reactions from the body cause blood pressure to rise
Increasing cardiac output, increasing heart rate, tightening of blood vessels
What does blood become as a result of hyperventilation (over breathing, more O2 than carbonic acid)
More alkaline
Oxygen carrying capacity reduced by what for smoker
8-10%
How long not to fly after blood donation
24hrs
What is Dalton’s law associated with
Hypoxia
What decreases resistance to decompression sickness
Scuba diving, age, obesity
Normal tidal volume
500ml
Basis of Boyles law
Gas pressure and volume are inversely proportional
Short term memory impairment height
18,000
When can you fly after scuba diving
24hrs
Critical hypoxia zone
20,000ft
Average breathing rate
12-20 breaths per min
100% oxygen without pressure used up to what alt
40,000ft
Where is the greatest pressure differential when climbing
0-5000ft
Glaucoma is caused by what
Excessive pressure within the eye
Most dangerous incapacitation
Insidious
Residual volume
1200ml
Law relating to decompression sickness
Henry’s (gas in liquid proportional to pressure)
What happens if visual acuity drops at night at 10,000ft
Go onto oxygen
If a person is exposed to extreme prolonged stress, what can they perceive
Distress
What frequency can cause distress to humans
1-100hz
Cockpit humidity
5-15%
What could extreme cold be associated with
Contentment or apathy
Sequence of General adaptation syndrome
Alarm, resistance, exhaustion
