Effective dissipation of heat is accomplished by increasing the
temperature gradient (conduction), water vapor pressure
(evaporation), and velocity of air (convection) between the skin
and the surrounding air [1,17]. Several techniques have been
devised based on these principles, including immersion in cold
water, placement of cold packs or ice slush over parts of or the
whole body, the use of cooling blankets, and wetting the body
surface while continually fanning [16-30]. These cooling techniques
have been used for decades, but the evidence supporting
their safety and effectiveness in rapidly reaching a safe
body temperature and reducing morbidity and mortality has yet
to be evaluated.
Effective dissipation of heat is accomplished by increasing thetemperature gradient (conduction), water vapor pressure(evaporation), and velocity of air (convection) between the skinand the surrounding air [1,17]. Several techniques have beendevised based on these principles, including immersion in coldwater, placement of cold packs or ice slush over parts of or thewhole body, the use of cooling blankets, and wetting the bodysurface while continually fanning [16-30]. These cooling techniqueshave been used for decades, but the evidence supportingtheir safety and effectiveness in rapidly reaching a safebody temperature and reducing morbidity and mortality has yetto be evaluated.
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