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Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome. A form of dysautonomia characterised by orthostatic intolerance and defined by tachycardia when assuming a standing or upright position and a marked decreased in cerebral blood flow and pressure, resulting in fatigue, lightheadedness, syncope, visual defects and disorientation, as well as systemic hypoperfusion, resulting in Raynaud phenomenon, chest pain dyspnea, asthenia and general malaise. Because the symptoms overlap those of generalised anxiety disorder, POTS may be diagnosed as such
Management Increase liquid intake, decrease alcohol, exercise regularly
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
postural orthostatic tachycardia syndrome,
Inability to tolerate a standing position as a result of a sudden increase in heart rate when rising from a seated or recumbent position. It is thought to be one of the dysautonomic syndromes.
Medical Dictionary, © 2009 Farlex and Partners