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We Will Cover. What is HypothermiaHow the body is affected by the coldThe unprotected swimmerOur body's own insulationSymptoms of HypothermiaTreatmentPreventionSummary. HYPO/2. What is Hypothermia?. Body core temperature drops below 37?CWater has 25 times greater heat conduction than airWat
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1. Hypothermia
2. We Will Cover What is Hypothermia
How the body is affected by the cold
The unprotected swimmer
Our body's own insulation
Symptoms of Hypothermia
Treatment
Prevention
Summary
3. What is Hypothermia? Body core temperature drops below 37°C
Water has 25 times greater heat conduction than air
Water requires 1,000 times more energy to heat than air
Diving in any of the worlds seas can reduce divers core body temperature
4. How does it affect the body? Hypothalamus
located in the brain
bodys temperature control regulator
Increased secretion of urine
Goose pimples
Vasoconstriction
Metabolism increased
Shivering
5. Cold, Wet, Wind, Fatigue = Killer/ Hypothermia
6. Body Fats Protect! Areas of greatest heat loss are...
Head
Neck
Sides
Groin
Women survive longer than men in cold water
7. Clinical Features Blue pallor, numbness = 36.5°C
Violent shivering = 36°C
Confusion, poor decision making, = 35°C
uncontrollable shivering
Clumsy, loss of co-ordination and = 34°C
dexterity
Shivering ceases - Muscles Spasms = 33°C
Loses use of arms and legs
8. Clinical Features Victim appears drunk or drugged = 32°C
Loss of Consciousness = 30°C
Cessation of Heartbeat & Breathing = 28°C
which leads to death
9. Treatment Remove the victim from cold water and dress them in dry clothing (if available)
Keep victim in Huddle position
Rewarm with survival bag or by body heat of others
Give warm drinks if available (soup)
Never Give Alcohol
10. Treatment Severe Cases: Rewarm in (42şC) bath under medical supervision
C.P.R. if necessary
Reheating is complete when victim starts to sweat
11. Prevention Wear good insulating garments (diving suits, headgear and windcheaters)
Reduce exercise in water to conserve strength and reduce heat loss
Acclimatisation to cold over long periods
12. Summary What is Hypothermia
How the body is affected by the cold
The unprotected swimmer
Our body's own insulation
Symptoms of Hypothermia
Treatment
Prevention
13. Questions