Int J Arrhythm.  2016 Jun;17(2):80-85. 10.18501/arrhythmia.2016.014.

Orthostatic Intolerance Syndrome

Affiliations
  • 1Division of Cardiology Yonsei University Wonju College of Medicine, Wonju, Republic of Korea. ahnn0102@medicus.co.kr

Abstract

Orthostatic intolerance is the inability to tolerate an upright posture as a consequence of varying degrees of autonomic nervous system dysfunction. Orthostatic intolerance syndromes can be classified into at least 3 categories: 1) orthostatic hypotension, 2) neurally mediated (reflex) syncope, and 3) postural orthostatic tachycardia syndrome. In this review, we discuss the pathophysiology and etiologies of orthostatic hypotension and postural orthostatic tachycardia syndrome, and propose their diagnostic and therapeutic alternatives.

Keyword

Orthostatic Intolerance; Orthostatic Hypotension; Postural Orthostatic Tachycardia Syndrome

MeSH Terms

Autonomic Nervous System
Hypotension, Orthostatic
Orthostatic Intolerance*
Postural Orthostatic Tachycardia Syndrome
Posture
Syncope
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