Results 161 to 170 of about 89,050 (201)
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Selected biomarkers of orthostatic intolerance
Vnitřní lékařství, 2023Orthostatic intolerance (OI) is defined as a group of diseases which symptoms are typically manifested in a standing position. These symptoms result from cerebral hypoperfusion and disappear in the supine position. We include postural orthostatic intolerance syndrome (POTS), orthostatic hypotension (OH) and vasovagal orthostatic syncope in this group ...
Barbora, Bačkorová, Ivica, Lazúrová
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Syncope and orthostatic intolerance
Medical Clinics of North America, 2003Syncope and orthostatic intolerance remain common and significant clinical problems with many undocumented, misdiagnosed, or cryptogenic cases. Careful clinical assessment and application of advancing laboratory support can further improve diagnosis and treatment.
Louis H, Weimer, Olajide, Williams
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Orthostatic Intolerance and Tachycardia Associated With Norepinephrine-Transporter Deficiency
New England Journal of Medicine, 2000 BACKGROUND: Orthostatic intolerance is a syndrome characterized by lightheadedness, fatigue, altered mentation, and syncope and associated with postural tachycardia and plasma norepinephrine concentrations that are disproportionately high in relation to ...
Italo Biaggioni +2 more
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Orthostatic Intolerance in Survivors of Childhood Cancer
European Journal of Cancer, 2007 Purpose: To compare the prevalence and severity of orthostatic intolerance in survivors of childhood cancer and in healthy controls, and to correlate results of self-reported measures of health status with orthostatic testing in survivors of childhood ...
Cindy L Schwartz +2 more
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Orthostatic Intolerance in Behcet's Disease
Autonomic Neuroscience, 2001Neurological manifestations are known to occur in patients with Behcet's Disease (BD) and significantly affect the clinical course of the disease. Nevertheless, the prevalence, pattern and severity of autonomic impairment in such patients have yet to be defined. In this paper, we presented a BD patient with orthostatic tachycardia.
T, Tellioglu, D, Robertson
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Cerebral Autoregulation in Orthostatic Intolerance
Annals of the New York Academy of Sciences, 2001Abstract: Many of the primary symptoms of orthostatic intolerance (fatigue, diminished concentration) as well as some of the premonitory symptoms of neurally mediated syncope (NMS) are thought to be due to cerebral hypoperfusion. Transcranial Doppler measurements of middle cerebral artery blood velocity (CBV) is at present the only technique for ...
R, Schondorf, J, Benoit, R, Stein
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Orthostatic Intolerance and the Headache Patient
Seminars in Pediatric Neurology, 2010Orthostatic intolerance (OI) refers to a group of clinical conditions, including postural orthostatic tachycardia syndrome (POTS) and neurally mediated hypotension (NMH), in which symptoms worsen with upright posture and are ameliorated by recumbence.
Kenneth J, Mack +2 more
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Orthostatic intolerance after spaceflight
Journal of Applied Physiology, 1996Orthostatic intolerance occurs commonly after spaceflight, and important aspects of the underlying mechanisms remain unclear. We studied 14 individuals supine and standing before and after three space shuttle missions of 9-14 days. After spaceflight, 9 of the 14 (64%) crew members could not complete a 10-min stand test that all completed preflight. Pre-
J C, Buckey +7 more
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Pyridostigmine in the Treatment of Orthostatic Intolerance
Annals of Pharmacotherapy, 2007Objective: To review the efficacy of pyridostigmine bromide for the treatment of orthostatic intolerance. Data Sources: MEDLINE and International Pharmaceutical Abstracts were searched (1966–December 2006) using the terms ...
Barry J, Gales, Mark A, Gales
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Orthostatic intolerance and orthostatic tachycardia: A heterogeneous disorder
Clinical Autonomic Research, 1995A series of autonomic function tests were performed in eight patients who had orthostatic intolerance and orthostatic tachycardia (> 36 bpm). All eight had an abnormal tilt-table test (mean tachycardia 50 bpm compared with 22 +/- 7 bpm in 31 normal subjects). Plasma volume was low in four out of six patients.
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