injuries poisoning
Hypothermia
Introduction
Hypothermia is a core body temperature<35° C. Symptoms progress from shivering and lethargy to confusion, coma, and death. Mild hypothermia requires a warm environment and insulating blankets (passive rewarming). Severe hypothermia requires active rewarming of the body surface (eg, with forced-air warming systems, radiant sources) and core (eg, inhalation, heated infusion and lavage, extracorporeal blood rewarming). (See also Overview of Cold Injury .) Primary hypothermia is widely underreported and can be classified as accidental (most common), homicidal, or suicidal. Secondary hypothermia also has a significant and underrecognized effect on mortality risk in cardiovascular and neurologic disorders. 