In the absence of structural heart disease (including a normal ECG), syncope is most often of neurally mediated reflex origin or orthostatic hypotension. As a rule, reflex etiologies predominate in ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

Orthostatic hypotension (also called postural hypotension) is a sudden dip in blood pressure that happens when you stand up after you’ve been sitting or lying down. Sometimes, it may take a moment (or ...

Orthostatic hypotension, also known as postural hypotension, happens when blood vessels in the body fail to constrict (narrow) in response to gravity. This causes a decrease in blood pressure and ...

November 27, 2001 -- Bethesda, Md. — The American Journal of Physiology: Heart and Circulatory Physiology, one of the 14 peer-reviewed journals published by the American Physiological Society (APS), ...

Episodes of transient loss of consciousness (TLOC) events pose diagnostic difficulties, as the causes are diverse, carry vastly different risks, and span various specialties. An inconsistent ...

Establishing the cause or causes of syncope serves two principal purposes. First, an etiologic diagnosis permits assessment of prognosis and risk of recurrence, both issues of great concern for ...

Orthostatic, or postural, hypotension is defined as a sudden drop in blood pressure resulting from a change in posture, such as when a person stands up quickly. When a person stands up after sitting ...