Postural Orthostatic Tachycardia Syndrome

Synonyms

Postural Tachycardia Syndrome

Syndrome, Postural Tachycardia

Tachycardia Syndrome, Postural

A syndrome of ORTHOSTATIC INTOLERANCE combined with excessive upright TACHYCARDIA, and usually without associated ORTHOSTATIC HYPOTENSION. All variants have in common an excessively reduced venous return to the heart (central HYPOVOLEMIA) while upright.