Considéré comme mort de froid...puis "ressucité"!

Aux Etats-Unis, un homme considéré comme mort de froid a pu être sauvé après avoir passé 12 heures dans la neige avec une température corporelle de 18°C.
Justin Smith was found “dead frozen” by his father Don in Pennsylvania. After 12 hours spent in the snow at -20°C, Justin was first declared dead. But Doctor Coleman, the emergency department physician on duty that day,doubted.
He said “You have to be warm to be dead.” Coleman ordered paramedics to start performing cardiopulmonary resuscitationon a man who had no pulse, no blood pressure, a body temperature of 18°C and no signs of life. For two hours, they pumped Smith’s chest and puffed breaths into his open mouth. They then pumped him full of warm, oxygenated blood. Smith survived without any brain damage. He just lost his toes and two fingers.Smith is the coldest person known to have survived exposure-related hypothermia.

The secret that saved Smith lies in the way the body slows down as it gets colder. Metabolism is estimated to slow by about 5 or 7% for every one degree Celsius drop in body temperature. By the time the temperature plunges, the heart will stop beating altogether.

You hang virtually in a state of suspended animation, seeming dead by all the standard measures but not irreversibly gone. If the patient is discovered before the heart stops and doctors begin CPR immediately, he has a decent chance of surviving.
Doctors have learned that there really is no temperature so low that you shouldn’t try to save someone.