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Heat syncope is fainting or dizziness as a result of overheating (syncope is the medical term for fainting). It is a type of heat illness. The basic symptom of heat syncope is fainting, with or without mental confusion. [1] Heat syncope is caused by peripheral vessel dilation, resulting in diminished blood flow to the brain and dehydration.
Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...
Causes: Hypotension, hypoglycaemia, arrhythmia, anaemia, hypokalaemia, thrombosis, water intoxication, dehydration: Risk factors: Poor dietary or diabetic management, genetic predisposition to cardiac arrhythmia: Diagnostic method: Based on symptoms. Some thrombotic pre-syncope may be indicated by a troponin serum level. Treatment: Dependent on ...
Heat syncope is believed to result from intense sweating, which leads to dehydration, followed by peripheral vasodilation and reduced venous blood return in the face of decreased vasomotor control. Management of heat syncope consists of cooling and rehydration of the patient using oral rehydration therapy (sport drinks) or isotonic IV fluids ...
These processes cause the typical symptoms of fainting: pale skin, rapid breathing, nausea, and weakness of the limbs, particularly of the legs. [3] If the ischemia is intense or prolonged, limb weakness progresses to collapse. [3] The weakness of the legs causes most people to sit or lie down if there is time to do so.
Treatment is directed at making the affected person feel more comfortable, and, if possible, resolving the underlying cause of the heat intolerance. Symptoms can be reduced by staying in a cool environment. Drinking more fluids, especially if the person is sweating excessively, may help.
Temporary vision loss "For some people, it goes beyond the visual cortex," Broner says. "They have stroke-like symptoms where the words aren't coming out right or it sounds garbled," she explains.
The cause of serotonin toxicity or accumulation is an important factor in determining the course of treatment. Serotonin is catabolized by monoamine oxidase A in the presence of oxygen, so if care is taken to prevent an unsafe spike in body temperature or metabolic acidosis, oxygenation will assist in dispatching the excess serotonin. The same ...