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Syncope ((syncope ⓘ), commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. [1] It is caused by a decrease in blood flow to the brain , typically from low blood pressure . [ 1 ]
Reflex syncope can occur in otherwise healthy individuals, and has many possible causes, often trivial ones such as prolonged standing with the legs locked. [citation needed] The main danger of vasovagal syncope (or dizzy spells from vertigo) is the risk of injury by falling while unconscious.
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.
Most people can tolerate a 3-4% decrease in total body water without difficulty or adverse health effects. A 5-8% decrease can cause fatigue and dizziness. Loss of over 10% of total body water can cause physical and mental deterioration, accompanied by severe thirst. Death occurs with a 15 and 25% loss of body water. [4]
Grapes and raisins can cause acute kidney failure in dogs [40] The exact mechanism is unknown, nor is there any means to determine the susceptibility of an individual dog. While as little as one raisin can be toxic to a susceptible 10 pounds (4.5 kg) dog, some other dogs have eaten as much as a pound of grapes or raisins at a time without ill ...
The problem is, she’s also been scratched and bitten by many of those animals, spent a lot of time and money she couldn’t spare trying to help them, and at times gotten yelled at by people who ...
The medical term for fainting, or ataques de nervios, is syncope, which happens when the brain does not receive enough oxygen and there is a brief decrease of blood flowing to the brain. Situational syncope occurs when situations affect the nervous system, such as anxiety, fear, pain, dehydration, hyperventilation, and the use of alcohol or ...
Alex Bruesewitz, a top adviser for President-elect Donald Trump, is making a speedy recovery following a fainting spell at the hospital on Monday, which was preceded by his sudden collapse at a ...