PMID: 9542179May 16, 1998Paper

Orthostatic tachycardia syndromes

Acta Médica Portuguesa
J L Ducla-Soares

Abstract

Orthostatic tachycardia may be due to several physiologic abnormalities. Normal regulation of cardiac frequency in relation to postural changes is described; main causes of orthostatic tachycardia are described, in particular hypovolemia, beta-adrenergic hypersensitivity and segmental autonomic neuropathy. The current therapeutic attitudes are discussed.

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