HPL Flashcards

1
Q

Human factors contribute to what percentage of accidents

A

70%

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2
Q

How to work out cardiac output

A

Pulse x stroke volume (/1000)

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3
Q

What causes an accident

A

Lack of good judgement

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4
Q

What reactions from the body cause blood pressure to rise

A

Increasing cardiac output, increasing heart rate, tightening of blood vessels

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5
Q

What does blood become as a result of hyperventilation (over breathing, more O2 than carbonic acid)

A

More alkaline

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6
Q

Oxygen carrying capacity reduced by what for smoker

A

8-10%

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7
Q

How long not to fly after blood donation

A

24hrs

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8
Q

What is Dalton’s law associated with

A

Hypoxia

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9
Q

What decreases resistance to decompression sickness

A

Scuba diving, age, obesity

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10
Q

Normal tidal volume

A

500ml

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11
Q

Basis of Boyles law

A

Gas pressure and volume are inversely proportional

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12
Q

Short term memory impairment height

A

18,000

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13
Q

When can you fly after scuba diving

A

24hrs

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14
Q

Critical hypoxia zone

A

20,000ft

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15
Q

Average breathing rate

A

12-20 breaths per min

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16
Q

100% oxygen without pressure used up to what alt

A

40,000ft

17
Q

Where is the greatest pressure differential when climbing

A

0-5000ft

18
Q

Glaucoma is caused by what

A

Excessive pressure within the eye

19
Q

Most dangerous incapacitation

A

Insidious

20
Q

Residual volume

A

1200ml

21
Q

Law relating to decompression sickness

A

Henry’s (gas in liquid proportional to pressure)

22
Q

What happens if visual acuity drops at night at 10,000ft

A

Go onto oxygen

23
Q

If a person is exposed to extreme prolonged stress, what can they perceive

A

Distress

24
Q

What frequency can cause distress to humans

A

1-100hz

25
Q

Cockpit humidity

A

5-15%

26
Q

What could extreme cold be associated with

A

Contentment or apathy

27
Q

Sequence of General adaptation syndrome

A

Alarm, resistance, exhaustion