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Postural orthostatic tachycardia syndrome

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Postural orthostatic tachycardia syndrome (POTS, also postural tachycardia syndrome) is thought to be a condition of partial dysautonomia, to be more specific orthostatic intolerance (OI), in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, called tachycardia. Several studies show a decrease in cerebral blood flow with systolic and diastolic cerebral blood flow (CBF) velocity decreased 44% and 60%, respectively. People with POTS have problems maintaining homeostasis when changing position, e.g. moving from one chair to another or reaching above their heads. Many also experience symptoms when stationary or even while lying down. Symptoms present in various degrees of severity depending on the individual. POTS can be severely debilitating. Some afflicted individuals are unable to attend school or work and for especially severe cases, they are completely incapacitated. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
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