Results 71 to 80 of about 9,743 (205)

False Positive Responses to Head-Up Tilt Testing in Elderly Patients with Paroxysmal Atrial Fibrillation [PDF]

, 2008
The autonomic nervous system (ANS) plays a role as a modulator in the pathogenesis of paroxysmal atrial fibrillation (PAF). The clinical pattern of vagally mediated PAF has been observed mainly in young patients.
Alves, S, Antunes, E, Cruz Ferreira, R, Feliciano, J, Nogueira da Silva, M, Oliveira, MM, Silva, S, Silva-Carvalho, L, Timóteo, AT   +8 more
core  

Vascular health and exercise in females throughout the lifespan: Exploring puberty, pregnancy and menopause

Experimental Physiology, EarlyView.
Abstract This narrative review highlights the impact of exercise on vascular health in females over the lifespan with an emphasis on puberty, pregnancy and menopause. These events encompass substantial changes in sex hormone levels, particularly oestrogens and progesterone.
Kathleen B. Miller, M. Erin Moir, Brandon G. Fico   +2 more
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, claude egharib, claude egharib   +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
core   +1 more source

Monitorización con vídeo-EEG y ECG simultáneo para el diagnóstico diferencial de trastornos de conciencia transitorios. A propósito de un caso [PDF]

, 2012
We present the case of a 36 year-old woman, with history of transient consciousness disorders with vegetative state, interpreted as epileptic crises and treated with valproate for two years.
Carmona-Abellan, M. (M.), Carmona-Iragui, M. (M.), Gasca-Salas, C. (C.), Gomez-Ibañez, A. (Asier), Martin, B. (B.), Viteri, C. (César)   +5 more
core   +1 more source

Tilt Test in Elderly Patients with Syncope of Unknown Etiology: Experience with Pharmacological Stimulation with Nitroglycerin [PDF]

, 2005
Está demonstrado o papel do teste de inclinação na avaliação de doentes com síncope de causa não esclarecida. Nos idosos, a prevalência de episódios sincopais aumenta, associa-se a pior prognóstico e, frequentemente, implica o recurso a múltiplos exames ...
Antunes, E, Coito, S, Feliciano, J, Fiarresga, A, Oliveira, MM, Pinheiro Vieira, A, Quininha, J, Silva, S, Timóteo, AT   +8 more
core  

Prohormones in the early diagnosis of cardiac syncope [PDF]

, 2017
Background--The early detection of cardiac syncope is challenging. We aimed to evaluate the diagnostic value of 4 novel prohormones, quantifying different neurohumoral pathways, possibly involved in the pathophysiological features of cardiac syncope ...
Badertscher, Patrick, Boeddinghaus, Jasper, Buser, Andreas, Bustamante, José, Christ, Michael, Cullen, Louise, de Lavallaz, Jeanne du Fay, Di Somma, Salvatore, Flores, Dayana, Frank Peacock, W., Geigy, Nicolas, Giménez, Maria Rubini, Javier Martin-Sanchez, F., Kawecki, Damian, Keller, Dagmar I., Kloos, Wanda, Kozhuharov, Nikola, Kuehne, Michael, Lohrmann, Jens, López, Beatriz, Miró, Oscar, Morawiec, Beata, Mueller, Christian, Nestelberger, Thomas, Osswald, Stefan, Poepping, Imke, Puelacher, Christian, Reichlin, Tobias, Rentsch, Katharina, Sabti, Zaid, Sarasin, François, Shrestha, Samyut, Strebel, Ivo, Than, Martin, Tschuck, Michael, Twerenbold, Raphael, Wildi, Karin   +36 more
core   +1 more source

Haemodynamic‐energetic mechanism of sudden cardiac death in severe aortic stenosis: A modelling study

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

Video education to improve clinical skills in the prevention of and response to vasovagal syncopal episodes

International Journal of Women's Dermatology, 2020
Background: Vasovagal syncope is a common clinical occurrence during routine outpatient dermatology procedures, such as injections and biopsies. Despite its prevalence, many medical students and health care professionals do not know how to respond ...
Anne Coakley, BS, Alison Bailey, MD, Joy Tao, MD, Yujie L. Liou, DO, Amanda Champlain, MD, Michael Ander, MD, Eden Lake, MD   +6 more
doaj   +1 more source

Determinants of maximal oxygen uptake in highly trained females and males: a mechanistic study of sex differences using advanced invasive methods

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, Marcos Martin‐Rincon, Bjarne Rud, Joachim Nielsen, Lars Henrik N. Hegg, Andreas V. Kleive, Niels Ørtenblad, Øyvind Sandbakk, Robert Boushel, Hans‐Christer Holmberg, Jose A.L. Calbet, Jostein Hallén   +11 more
wiley   +1 more source