Tub cooling for exertional heatstroke.
For an athlete who has exertional heatstroke, every minute counts: Rapid cooling can mean the difference between walking away from the event medical area and being hospitalized with potential sequelae. The fastest and simplest way to cool a dangerously overheated athlete is to put him or her in an ice-water bath. This method reduces body temperature by an average of 17 degrees F an hour ((1)).
Roberts
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MinnHealth SportsCare, White Bear Lake, MN, USA.