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e-Health Info - Hypothermia 101

E-HEALTH Info

Hypothermia 101

Jan. 28, 2008

SHANNON M. EVANS
Communications

Though we grumble and moan when the temperature inevitably dips to sub-zero levels, many of us secretly pride ourselves on our cold weather know-how. As you deal with this week’s deep-freeze, be sure that your hardiness is anything but fool-hardy.

Insulate yourself with knowledge – read on for simple hypothermia facts & tips:

Quick Facts: Hypothermia

  • Is a risk even in above average winter temps: hypothermia can happen at 10 C and under!
  • Occurs when the body cannot produce more heat than it’s losing, resulting in an internal body temperature that drops below 35 C (95 F);
  • Is caused by any one (or all) of these key risk factors:
    • Wind – chills your body as the air moves over it
    • Wet – water rapidly absorbs body heat; even damp clothes are a risk factor
    • Cold – exposure to cold chills the body

Symptoms: Hypothermia

  • Mild Hypothermia: First Signs
    • Bouts of shivering
    • Grogginess and/or confused thinking
    • Normal pulse and breathing
  • Moderate Hypothermia: Condition is worsening
    • Violent Shivering or, shivering stops
    • Unable to mentally focus or pay attention
    • Slow, shallow breathing
    • Slow, weak pulse
  • Severe Hypothermia
    • Shivering has stopped
    • Unconsciousness
    • Little or no breathing
    • Weak, irregular or non-existent pulse.

Precautions: For everyone

  • Wear layers! Trap the heat around your body and keep yourself dry. The layer closest to your skin should allow perspiration to escape (try silk); the second layer should absorb moisture without letting heat escape (try wool); the third layer should trap heat in and keep moisture/wind out (try a down or microfibre filled coat with a water-resistant shell).
  • Don’t forget your head, hands or feet! A large amount of body heat is lost through the head – keep yours covered with a warm hat. Choose mittens (which are warmer than gloves), and water-proof boots. Replace wet (socks, mitts or boot liners) with dry.
  • Stay hydrated! Drink plenty of water, and avoid coffee, tea, and alcoholic beverages (which can contribute to heat loss).

Information adapted from www.safety-council.org

Wondering about frostbite? Take a look at this 3D human atlas video.
 

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