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Thanks, that’s interesting. Sounds like there are good possibilities.

Do you know if this theory is based on the fact that drowning victims (mostly children) have survived long periods under frigid water and survived?

Yes, it was learned 50 plus years ago that people who drowned in frigid water stood a much better chance of recovery with far fewer problems than those who went down in warm water. And then it was noticed the water didn't have to be all that cold, just cooler than body temp. Too cold and you have only a few minutes to live, but at higher temps it certainly increases your chances of survival.

Once they get your core temp down to TH (therapeutic hypothermia) levels you can be taken out of the suit and you will not be able to rewarm yourself, so they have several hours to do what they need to to do. They give you meds to stop the shivering, all that does is increase the workload on your heart.

There are several ER’s here in Central Florida that use TH on a routine basis with those who are having or have had a heart attack. Some of the results have been pretty spectacular.

They can cool you down in a remote hospital and then fly you to a trauma center by helicopter and it works great.