As an emergencey nurse I have never heard of the solutions being warmed in a microwave oven.The solutions are kept on hand in a warming cupboard (kind of the reverse of a refigerator) that keeps the at a consistantly warm tempature that is known to be what the body needs when it is hypothermic or in a state of shock.
We also warmed the fluids with a machine that was at bedside attached to the IV fluids...Blood is also frequently but on a warmer.Again though I personally have never heard of putting them in a microwave in the 27 years I worked ER...but you learn something new everyday!!
This is done for hypothermia and for frostbite if it is severe enough..for shock and for trauma patients.Many times in the OR..anytime the doc thinks the patients temp is too low or might benifit from alittle warming this is used...to help keep the patient warm and ward off shock.
