Results 91 to 100 of about 56,799 (265)
Tilt Testing in the Diagnosis and Treatment of Syncope [PDF]
, 2010 A síncope neurocardiogénica é uma entidade com prevalência e incidência significativas. Apesar da baixa mortalidade relacionada com esta entidade, são significativas as implicações na qualidade de vida dos doentes.
Oliveira, MM, Timóteo, AT
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Head-Up Tilt Testing with Different Nitroglycerin Dosages: Experience in Elderly Patients with Unexplained Syncope [PDF]
, 2008 AIMS: Protocols using sublingual nitrates have been increasingly used to improve diagnostic accuracy of head-up tilt testing (HUT). Nevertheless, exaggerated responses to nitrates have been frequently described, particularly in elderly patients.
Antunes, E +7 more
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The Journal of Physiology, EarlyView.Abstract figure legend A sudden decrease in total peripheral resistance (TPR), as observed during vasovagal syncope, leads to a reduction in aortic systolic pressure (AO pressure) and afterload. In healthy individuals, the consequent decrease in left ventricular systolic pressure (LV pressure) lowers stroke work and myocardial energy expenditure.
Martin Dvoulety, Michal Sitina
wiley +1 more source
Self-organization of blood pressure regulation: Clinical evidence
Frontiers in Physiology, 2016 The pathogenesis of vasovagal syncope has remained elusive despite many efforts to identify an underlying dysfunction. Catastrophe theory explains the spontaneous occurrence of sudden events in some mathematically complex systems known as self-organized ...
Jacques-Olivier eFortrat +2 more
doaj +1 more source
The human fear-circuitry and fear-induced fainting in healthy individuals The paleolithic-threat hypothesis [PDF]
, 2005 The Paleolithic-Threat hypothesis reviewed here posits that habitual efferent fainting can be traced back to fear-induced allelic polymorphisms that were selected into some genomes of anatomically, mitochondrially, and neurally modern humans (Homo
Bracha, Adam S. +4 more
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The Journal of Physiology, EarlyView.Abstract figure legend The results from this study show that maximal cardiac output, stroke volume and leg blood flow are similar between highly trained females and males after normalisation to lean body mass (LBM). However, the 10% higher haemoglobin concentration ([Hb]) and arterial O2 content in males result in higher systemic and leg O2 delivery ...
Øyvind Skattebo +11 more
wiley +1 more source
American Journal of Medical Genetics Part A, Volume 200, Issue 5, Page 1083-1086, May 2026.ABSTRACT Pathogenic variants in the SCN5A gene and its subunits have been identified in individuals with Brugada Syndrome. One such SCN5A variant, c.689T>C(p.Ile230Thr), was previously reported as disease‐causing only in homozygous individuals, with heterozygous carriers being unaffected.
Shayla Shojaat +2 more
wiley +1 more source
Український журнал серцево-судинної хірургіїIntroduction Syncope is a sudden, brief loss of consciousness with rapid spontaneous recovery, caused by transient global cerebral hypoperfusion. Among various causes of syncope, the most common are reflex mechanisms, particularly vasovagal syncope ...
Dmytro A. Tymoshenko +2 more
doaj +1 more source
Spectral analysis of heart rate variability for assessment of autonomic nervous system activity during head-up tilt table testing [PDF]
, 2014 Spectral analysis of heart rate variability was used to assess changes in activity of autonomic nervous system (ANS) in 84 patients with history of recurrent syncope and 21 normal controls.
et al., Likar, Polona
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Meniere’s, Migraine & Motion Sickness [PDF]
, 2016 CONCLUSION Elevated MSS in MD is likely to be a consequence of the onset of MD and not migraine per se. OBJECTIVES Pathologies of the vestibular system influence motion sickness susceptibility (MSS).
Golding, J.F. +3 more
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