Postural orthostatic tachycardia
Postural orthostatic tachycardia syndrome (POTS, also known as postural tachycardia syndrome) is a condition in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, called tachycardia. Other symptoms of an orthostatic nature — occurring in response to upright posture — may accompany the tachycardia.
- Wikipedia - Postural orthostatic tachycardia syndrome
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