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Weather Related

Four Physiologic Phases

1. prefreeze -cooling tissure

2. freeze-thaw -ice crystal formation, then thaw ischemia reperfusion w/ inflamatory response

3. vascular stasis -leaky vessels w/ coagulation

4. late ischemic - tissue ischemia w/ infarction

Environmental Considerations

Physiological

Hypothermia

Hyperthermia

Cold Injuries

HYPOTHERMIA

Drowning

Lightning

Neurotoxin

Myotoixin

AVALANCHE

Envenomation

Environmental Trauma

Rhabdomyolysis

Dehydration - Hypovolemia

Hyponatremia - Overhydration

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