Cold Water Immersion - Extreme Physiology

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What is the number of accidental deaths in the UK by drowning per year?
400-1000
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How many deaths are there by drowning per year worldwide?
370,000
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The thermal conductivity of water is how many times greater than air?
27
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The human body cools how many times faster in water than it does in air?
5
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What is not a phase of immersion?
Fatal response
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What percentage of drownings occur in strong swimmers?
67%
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What percentage of drownings occur within 3m of safe refuge?
55%
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What is NOT an initial respiratory response?
Increased breath hold time
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What is NOT an initial cardiovascular response?
Peripheral vasodilation
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What is an incorrect reason to tread water?
Reactivates blood flow to muscles
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The short term response is from ... after immersion
5-30 mins
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What is an incorrect effect of the short term response?
Legs are a major site of heat loss
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What is an incorrect reason for decreased contractile force during the short term response?
Increased ACH activity
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What is not an implication of the short term response?
Decrease in work rate
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After how long is the long term response phase?
30 mins
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What is not an effect of long term immersion?
Shivering
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What is not an effect of post immersion response?
Decreased cardiovascular demand
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What is death by drowning NOT due to?
Alkalosis
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Is salt water or fresh water more dangerous?
Salt - greater irritant so fluid retention raises pressure
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Other cards in this set

Card 2

Front

How many deaths are there by drowning per year worldwide?

Back

370,000

Card 3

Front

The thermal conductivity of water is how many times greater than air?

Back

Preview of the front of card 3

Card 4

Front

The human body cools how many times faster in water than it does in air?

Back

Preview of the front of card 4

Card 5

Front

What is not a phase of immersion?

Back

Preview of the front of card 5
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