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USA_SCI_HYP_11_xs .Hypothermia Research at the University of Minnesota Hypothermia laboratory in Duluth; US Coastguardsman wears a survival suit while laying on ice floating in Lake Superior for a survival suit test. Temperature of the water is about 45 degrees Fahrenheit. MODEL RELEASED [1988].Hypothermia is a medical condition in which the victim's core body temperature has dropped to significantly below normal and normal metabolism begins to be impaired. This begins to occur when the core temperature drops below 35 degrees Celsius (95 degrees Fahrenheit). If body temperature falls below 32 °C (90 °F), the condition can become critical and eventually fatal. Body temperatures below 27 °C (80 °F) are almost uniformly fatal, though body temperatures as low as 14 °C (57.5 °F) have been known to be survivable. For unknown reasons, people who fall critically unconscious in very cold water can, in rare cases, be resuscitated, even though they would be expected to have died of drowning and/or hypothermia.  [[http://encycl.opentopia.com/term/Hypothermia]]
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