I wonder if you guys are confusing heat with cold?

I've heard the "don't warm too fast" theory with hypothermic patients, the idea being if you warm them externally, you open the vaso-constricted vessels and then they go into shock, which in a hypothermic state is just making things worse.

Either way, the shivering aspect is something to consider. You just have to cool them faster - ice water enema, anyone?