The authors had the opportunity to study experimentally the temperature regulation and heat tolerance of 2 men who had recently recovered from severe heatstroke. It was shown that the ability of a 17 yr old patient to regulate body temperature during exposure to severe workheat stress was somewhat more favorable than that of 21 to 26 year old unacclimatized control subjects. His endurance was greater and he could tolerate higher body temperatures with less evidence of circulatory strain or syncope. In a second patient it was clear that in the unacclimatized state the responsiveness of his sweating mechanism to the stimuli of work and of elevated core and skin temperatures in the heat was somewhat lower than that of the average unacclimatized young man. As a consequence, his skin temperature was higher than that of other subjects during the work experiments in dry heat. The high skin temperature and narrow gradient between core and surface increased the requirement for cutaneous blood flow in heat transport to the surface as compared with the other subjects. As a result of this strain on the circulation, this patient was subject to syncope when his core and skin temperatures approached 39.5 and 38.5 C, respectively, and this may protect him from extreme hyperpyrexia.
|Original language||English (US)|
|Number of pages||10|
|Journal||Israel Journal of Medical Sciences|
|State||Published - Dec 1 1976|
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