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Thermodispersion is the term used to indicate the set of processes by which the release of heat from the body surface is realized.

Thermodispersion together with thermogenesis (heat production) contributes to keeping the body temperature constant (thermoregulation). Thermodispersion is particularly important in case of increased body temperature (fever), which requires an extra supply of fluids; it can be facilitated through the application of tablets moistened with cool water on the forehead, wrists, ankles.

Biological processes produce heat, and thermodispersion is provided by sweat, elimination of urine, respiration, and perspiratio insensibilis. Of course, these processes involve the elimination of water, which therefore must be replenished, in order not to incur in dehydration and hyperthermic phenomena.

In cases where it is important to maintain body heat in emergencies (premature and underweight babies, mountain rescues, frostbite, etc.), while waiting for rescue, the subjects must be wrapped in special metallized blankets or, in the absence of the same, in plastic wrappings in turn protected by normal blankets, which precisely prevent further loss of heat.

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