Two thirds of sufferers of blood loss trauma experience hypothermia. Blood and fluids used in transfusions must be warmed from storage temperatures (4 degrees C) to body heat (37 degrees C). Israeli startup QinFlow’s Warrior portable system does just that – faster than any alternative system. It recently received US FDA approval.
https://www.youtube.com/watch?v=CdelVHvOqBE
http://www.israel21c.org/treating-life-threatening-hypothermia-just-got-easier/