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A condition of elevated body temperature.



the accumulation of excess heat in the body of humans or animals, with an elevation of body temperature, caused by external factors that hinder the transfer of heat to the external environment or increase heat intake from outside the body. Hyperthermia arises when there is maximum strain on the physiological mechanisms of thermoregulation (perspiration, dilation of cutaneous blood vessels, and so forth); if the causes are not removed, it progresses, ending with heat stroke at a body temperature of approximately 41°-42° C.

Hyperthermia is accompanied by an increase of metabolism and qualitative disturbances of it, loss of water and salts, and disruption of blood circulation and the delivery of oxygen to the brain, causing agitation and sometimes convulsions and fainting. High temperature during hyperthermia is tolerated less readily than it is in other feverish diseases. The development of hyperthermia is promoted by an increase in heat production (for example, during muscular work), disruption of thermoregulation mechanisms (with narcosis, drunkenness, and certain diseases), or age-related failure of these mechanisms (in very young children). Artificial hyperthermia is used in treating certain nervous and slowly progressing chronic diseases.


References in periodicals archive ?
Cal/OSHA appealed that decision to the Appeals Board, stating the ALJ should have affirmed the citations because the employers had failed to effectively correct the hazard of indoor heat exposure, and had not trained employees on the hazard of indoor heat exposure and heat illness.
Moreover, the available research does not clarify whether factors associated with presentation to the ED for heat illness are the same as those for heat-related deaths.
To accurately calculate rates of heat illness based on lost time claims, estimates of the working population from the Labour Force Survey were adjusted based on industry characteristics to determine the number of FTE employees eligible for WSIB coverage.
In partnership with the National Oceanic and Atmospheric Administration (NOAA), OSHA is developing a heat index smart phone application that will display the NOAA heat index at the users location with action alerts on how to prevent heat illness on the job.
All athletes, coaches, athletic trainers and parents and guardians should be aware of the risk factors for heat illness, follow recommended strategies and be prepared to respond quickly to symptoms of illness," the study's authors wrote.
It would include new requirements for the provision of water and break periods, and training to recognize and treat heat illness.
In this issue of the Southern Medical Journal, a team of researchers report preliminary findings of a prospective observational pilot study entitled "Heat Illness Symptom Index (HISI): A Novel Instrument for the Assessment of Heat Illness in Athletes.
They should be discouraged from gaining excessive weight that may impair performance, increase the likelihood of heat illness, and increase the risk of developing complications from obesity.
Although youngsters are more susceptible to dehydration and heat illness than adults, a survey commissioned by the National Safe Kids Campaign revealed that more than three out of four parents of active children aged 8-14 do net know the steps they should take to prevent dehydration in their offspring.
One may be completely unaware of profuse sweating because the sweat dries so quickly, and serious heat illness can develop very quickly.
Groundbreaking regulations to protect outdoor workers from heat illness adopted in 2006, and
10, 2015 /PRNewswire-USNewswire/ -- Cal/OSHA is urging all employers throughout the entire state to protect their outdoor workers from heat illness.