Results 101 to 110 of about 89,050 (201)

Evaluation of orthostatic dizziness and lightheadedness in older adults: symptoms not to be taken lightly

open access: yesFrontiers in Neurology
Orthostatic dizziness and lightheadedness are frequent complaints in patients age 60 and above, whereas various common and uncommon etiologies need to be considered, including medication side effects, cardiovascular and metabolic causes and neurologic ...
Svetlana Blitshteyn, Svetlana Blitshteyn
doaj   +1 more source

Epidural Spinal Cord Stimulation of Lumbosacral Networks Modulates Arterial Blood Pressure in Individuals With Spinal Cord Injury-Induced Cardiovascular Deficits

open access: yesFrontiers in Physiology, 2018
Disruption of motor and autonomic pathways induced by spinal cord injury (SCI) often leads to persistent low arterial blood pressure and orthostatic intolerance.
Sevda C. Aslan   +20 more
doaj   +1 more source

Cerebrovascular regulation during heat stress

open access: yesExperimental Physiology, Volume 111, Issue 11, Page 5052-5060, 1 November 2026.
Abstract Given that the brain is a highly metabolic organ and is enclosed by the skull, effective regulation of cerebral blood flow (CBF), not only for oxygen and nutrients supply but also as a means of convective heat exchange, is critical for preventing excessive elevations in brain temperature.
Kanoko Ito, Manabu Shibasaki
wiley   +1 more source

Excessive Hypocapnic Cerebral Vasoconstriction in Hypermobile Ehlers–Danlos Syndrome Assessed With Real‐Time Magnetic Resonance Imaging During Lower‐Body Negative Pressure

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Orthostatic intolerance is common in hypermobile Ehlers–Danlos syndrome (hEDS) with one third of patients fulfilling postural orthostatic tachycardia syndrome criteria.
Darius A. Gerlach   +9 more
doaj   +1 more source

Clinical profile and cardiovascular autonomic function tests in patients with postural orthostatic tachycardia syndrome

open access: yesCHRISMED Journal of Health and Research, 2019
Background: Postural orthostatic tachycardia syndrome (POTS) is an autonomic disorder characterized by the clinical symptoms of orthostatic intolerance such as light-headedness, fatigue, sweating, tremor, anxiety, palpitation, exercise intolerance, and ...
Neeraj   +3 more
doaj   +1 more source

Reduced Systolic Volume: Main Pathophysiological Mechanism in Patients with Orthostatic Intolerance?

open access: yesArquivos Brasileiros de Cardiologia
Background: Orthostatic intolerance patients' pathophysiological mechanism is still obscure, contributing to the difficulty in their clinical management.
Maria Zildany P. Távora-Mehta   +8 more
doaj   +1 more source

The effect of bedrest on various parameters of physiological function. Part XIII - A review of possible mechanisms of orthostatic intolerance to passive tilt [PDF]

open access: yes, 1966
Possible mechanisms of orthostatic intolerance to passive tilt - bed rest and water immersion effects on various parameters of physiological ...
Vogt, F. B.   +3 more
core  

Functional Disability in Adolescents With Orthostatic Intolerance and Chronic Pain

open access: yes, 2011
A retrospective review identified 99 adolescents (79% female) referred to a tertiary care center to evaluate the relationship between symptoms of orthostatic intolerance and chronic pain.
Dustin P. Wallace   +6 more
core   +1 more source

Mechanisms of sympathetic regulation in orthostatic intolerance

open access: yesJournal of Applied Physiology, 2012
Sympathetic circulatory control is key to the rapid cardiovascular adjustments that occur within seconds of standing upright (orthostasis) and which are required for bipedal stance. Indeed, patients with ineffective sympathetic adrenergic vasoconstriction rapidly develop orthostatic hypotension, prohibiting effective upright activities.
openaire   +3 more sources

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