Presentation
CONCLUSION: The present study demonstrates that endurance exercise capacity in a hot environment falls progressively as solar radiation increases. [ncbi.nlm.nih.gov]
Entire Body System
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Fever
Prostaglandins and fever (A.S. Milton). Brain eicosanoids and LPS fever: species and age differences (V. Fraifeld, J. Kaplanski). Biogenic amines and thermoregulatory changes (E. Zeisberger). [elsevier.com]
The answer is when the body temperature goes down, we shiver and when it goes up, we know it as fever. As in the example of the car, high temperatures can cause the engine to fail or even burn up; it is about the same for people. [mmgazette.com]
If your child is sick (fever, vomiting or diarrhoea, or even a mild cold), they need extra attention to ensure they remain well hydrated and don’t overheat. See your doctor if your child is unwell. [health.nsw.gov.au]
Classification [ edit ] Temperature classification Note: The difference between fever and hyperthermia is the underlying mechanism. Different sources have different cut-offs for fever, hyperthermia and hyperpyrexia. [en.wikipedia.org]
Many people with MS experience a temporary worsening of their symptoms when the weather is very hot or humid, or when they run a fever. [nationalmssociety.org]
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Swelling
Heart rate (HR), cardiac output (CO), mean arterial blood pressure (MBP), forearm blood flow (FBF), skin blood flow (SBF), foot swelling (FSW) and tympanic temperature (Tty) were measured during IIHG, resting and recovery periods. [ncbi.nlm.nih.gov]
Heat exposure causes the following illnesses: Heat edema is swelling which generally occurs among people who are not acclimatized to working in hot conditions. Swelling is often most noticeable in the ankles. [ccohs.ca]
[…] lost; at 400 C - 700 C, the remaining 80% of the bonded water in the C-S-H gel breaks down completely; between 500 C - 580 C, Ca(OH) 2 starts to disintegrate; at 750 C, calcium carbonate starts to disintegrate, releasing CO 2, and producing CaO, which swells [scirp.org]
If body temperature is not reduced quickly, organs can swell and become damaged, which can be permanent. If treatment is not found quickly, heatstroke can be fatal. [medicalnewstoday.com]
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Inflammation
Total leukocyte numbers, lymphocyte subsets (CD8 , CD4 , CD3 , NK and CD19 ), cytokine production capacity by peripheral blood mononuclear cells (PBMCs) (IL-2, IL-4, IL-5, IL-10, IFN-gamma and TNF-alpha) as well as the concentration of several inflammation [ncbi.nlm.nih.gov]
The spots are the result of inflammation caused when the ducts of sweat glands become plugged. Heat cramps are sharp pains in the muscles that may occur alone or be combined with one of the other heat stress disorders. [ccohs.ca]
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Increased Energy
The increase in oxygen intake in a hot environment might result from an increased metabolism due to higher body temperature and increased energy requirement for heat dissipation such as profuse sweating, higher heart rate, and increased ventilatory volume [ncbi.nlm.nih.gov]
Cardiovascular
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Tachycardia
Heart rate and respiration rate will increase ( tachycardia and tachypnea ) as blood pressure drops and the heart attempts to maintain adequate circulation. [en.wikipedia.org]
Skin
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Increased Sweating
The body's internal "thermostat" maintains a constant inner body temperature by pumping more blood to the skin and by increasing sweat production. In this way, the body increases the rate of heat loss to balance the heat burden. [ccohs.ca]
Fit individuals already have some of the physical advantages that are gained with acclimation—for example, an increased sweat rate. [ksi.uconn.edu]
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Flushing
Heavy sweating, weak pulse, feeling tired, faint, and weak, feeling nauseous, skin is pale or flush, and headaches (signs of heat exhaustion). [canada.ca]
[…] untreated Heat exhaustion Shallow breathing Increased heart rate Weak, rapid pulse Cool, pale, clammy skin Sweating Weakness, fatigue, dizziness Headache and nausea Fainting Muscle cramps Can lead to heat stroke if left untreated Heat stroke Hot, dry, flushed [worksafebc.com]
Peripheral vasoconstriction (skin gets pale) Pulse Rate - increased Respiratory Rate - increased Urine Output - decreased Temperature - increased (may be over 105 F/41 C) Skin - may be wet or dry, flushed AVPU - Severe changes in mental status and motor [princeton.edu]
Psychiatrical
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Suggestibility
The present study suggested that FBF was sufficient for active muscles during IIHG at 10% MVC. [ncbi.nlm.nih.gov]
Workup
Serum
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Dyslipidemia
The rate of dyslipidemia was significantly higher in heat-exposed middle-aged workers and in both exposed groups of aged workers (p .05). [ncbi.nlm.nih.gov]
Treatment
RESULTS: No statistical differences were noted in temperature between treatments (P 0.05). [ncbi.nlm.nih.gov]
Baring this in mind, this book describes suitable models for hyperthermic injury which could be highly relevant to the study of mechanisms of cell injury in the CNS and to test various neuroprotective agents which may be found useful in the treatment [elsevier.com]
Dizziness and fainting – treatment Treatment for dizziness or fainting includes: Get the person to a cool area and lay them down. If fully conscious, increase fluid intake. [betterhealth.vic.gov.au]
"Hyperthermia in Cancer Treatment". Retrieved 2 August 2015. [en.wikipedia.org]
Epidemiology
In a hospital, more aggressive cooling measures are available, including intravenous hydration, gastric lavage with iced saline, and even hemodialysis to cool the blood. [8] Epidemiology [ edit ] The frequency of environmental hyperthermia can vary significantly [en.wikipedia.org]
Pathophysiology
Pathophysiological Aspects. Hyperthermia and the central nervous system (P. Sminia, M.C.C.M. Hulshof). Pathophysiology of brain edema and cell changes following hyperthermic brain injury (H.S. Sharma et al. ). [elsevier.com]
[…] gland tumor, called pheochromocytoma, both of which can cause increased heat production. [8] Damage to the central nervous system, from brain hemorrhage, status epilepticus, and other kinds of injury to the hypothalamus can also cause hyperthermia. [8] Pathophysiology [en.wikipedia.org]
Prevention
In order to prevent such individuals from becoming hyperthermic, we developed a body heat removal system (BHRS) with thermoelectric devices. [ncbi.nlm.nih.gov]
Prevention We can treat heat stress and heat stroke, but the most important is to prevent these situations at work. [futurelearn.com]