Have you ever felt dizzy or lightheaded after getting up from a seated or lying position? Did you feel as though gravity was pulling you down into a state of unconsciousness? If that's something ...

Orthostatic hypertension—a rise in blood pressure upon assuming upright posture—is an underappreciated and understudied clinical phenomenon. There is currently no widely agreed-upon definition of ...

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 ...

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 ...

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 ...

Hyperactivation of the sympathetic nervous system has been suggested as one of the mechanisms of OHT, in line with our previous finding that BP increase during head-up tilt in OHT subjects was blunted ...

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), ...

Citation: Lowry M et al (2024) Orthostatic hypotension 1: the physiology of blood pressure regulation. Nursing Times [online]; 120: 11. This article is the updated version of Lowry M et al (2016) ...

The problem, a brief but precipitous drop in blood pressure that causes lightheadedness or dizziness when standing up, is called orthostatic hypotension. By Jane E. Brody Orthostatic hypotension — to ...

Causes of fainting could be reflex-mediated, cardiac, orthostatic or cerebrovascular. Beauty parlor stroke syndrome is a form of vertebrobasilar insufficiency that causes symptoms of mild to severe ...