Summary: The effects of heat waves on health in already injured persons
The human being is able to cope with a wide range of environmental temperature. It can adapt and acclimate, but with a higher burden of heat, either by physical work ( sport, military service, etc. ), or by higher environmental temperature the adaptation can change to a real pathogenetic load with systemic reactions.
These include liberation of cytokines, cellular affections, cardiac alterations with arrhythmia, heart insufficiency, and mental disorders. These processes are particularly important in persons, who are already ill, as in old or disabled persons, or those who are missing adequate social support. Heat exhaustion is not limited to tropical countries, but can affect peaople also in moderate climate.