Cardiac Autonomic Nervous System
Mostrando 13-24 de 63 artigos, teses e dissertações.
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13. Variabilidade da frequência cardíaca após treinamento concorrente : comparação entre homens e mulheres de meia-idade = Heart rate variability after concurrent training : comparison between middle-aged men and women / Heart rate variability after concurrent training : comparison between middle-aged men and women
The autonomic nervous system dysfunction and the increase in chronic degenerative diseases are manifested by the aging process, leading to changes of the autonomic modulation cardiac, and therefore the heart rate variability. Regarding the response of the autonomic nervous system and cardiorespiratory adaptive responses are even less enlightening evidencing
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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14. Auditory stimulation and cardiac autonomic regulation
Previous studies have already demonstrated that auditory stimulation with music influences the cardiovascular system. In this study, we described the relationship between musical auditory stimulation and heart rate variability. Searches were performed with the Medline, SciELO, Lilacs and Cochrane databases using the following keywords: "auditory stimulation"
Clinics. Publicado em: 2012-08
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15. Influência do sistema renina angiotensina na modulação do estado redox, no balanço autonômico e na hipertrofia cardíaca induzida pelo hipertireoidismo experimental
Hyperthyroidism is an epidemiologic relevant pathology, which substantially affects the cardiovascular system. The hyperthyroid state may affect basal metabolism, O2 cell consumption, renin-angiotensin system, and increase reactive oxygen species production. Those alterations produce morphological, biochemical, functional and molecular consequences in cardia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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16. Associação da disfunção diastólica de origem hipertensiva com a atividade simpática cardíaca e periférica / Association of diastolic dysfunction of hypertensive origin with cardiac and peripheral sympathetic activity
INTRODUÇÂO: A hipertensão arterial sistêmica (HAS) é uma condição clínica com alta prevalência, sendo considerada como o principal fator de risco modificável para o desenvolvimento de insuficiência cardíaca (IC). Dentre os mecanismos relacionados à progressão da HAS para a IC, a hiperatividade simpática e a disfunção endotelial devem ser con
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/08/2011
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17. Influência da integridade dos barorreceptores nos ajustes morfofuncionais cardíacos à hipertensão espontânea em ratos / Influence of baroreceptor integrity on cardiac morpho-functional adjustments to spontaneous hypertension in rats
It has been demonstrated that reduced baroreflex sensitivity is an independent marker of mortality risk. The arterial baroreflex plays an important role in the maintenance of the moment-to-moment stability of blood pressure (BP). Although the contribution of blood pressure variability (BPV) to cardiovascular morbidity and mortality is well established, the m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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18. Impacto da obesidade sobre o sistema nervoso autonômico cardíaco e a capacidade funcional em mulheres
Obesity is a chronic disease associated with autonomic nervous system (ANS) dysfunctions and with functional capacity limitation. In this context, two studies were developed to understand the cardiac autonomic nervous system and cardiopulmonary systems behavior in obese women in response to different situations. The first study, entitled "Impact of obesity i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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19. Cardiovascular and autonomic modulation by the central nervous system after aerobic exercise training
The autonomic nervous system plays a key role in maintaining homeostasis under normal and pathological conditions. The sympathetic tone, particularly for the cardiovascular system, is generated by sympathetic discharges originating in specific areas of the brainstem. Aerobic exercise training promotes several cardiovascular adjustments that are influenced by
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-09
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20. Effects of different levels of positive airway pressure on breathing pattern and heart rate variability after coronary artery bypass grafting surgery
The application of continuous positive airway pressure (CPAP) produces important hemodynamic alterations, which can influence breathing pattern (BP) and heart rate variability (HRV). The aim of this study was to evaluate the effects of different levels of CPAP on postoperative BP and HRV after coronary artery bypass grafting (CABG) surgery and the impact of
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-01
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21. Acute electrophysiologic consequences of pyridostigmine inhibition of cholinesterase in humans
The cardiovascular electrophysiologic basis for the action of pyridostigmine, an acetylcholinesterase inhibitor, has not been investigated. The objective of the present study was to determine the cardiac electrophysiologic effects of a single dose of pyridostigmine bromide in an open-label, quasi-experimental protocol. Fifteen patients who had been indicated
Publicado em: 2011
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22. Alterações cardiovasculares de fêmeas de ratos espontaneamente hipertensos (SHR) relacionadas com a idade / Cardiovascular changes in female spontaneously hypertensive rats (SHR) age-related
Hypertension is a major cause of cardiovascular disorders, and the natural progression of this disease may trigger further changes in the circulatory system. Experimental models are widely used in studies on the changes that occur in the cardiovascular system induced by hypertension. The SHR is the model that most closely matches the human hypertension, as i
Publicado em: 2011
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23. Análise anatomopatológica do sistema nervoso autônomo cardíaco intrínseco na fibrilação atrial permanente / Pathologic analysis of the intrinsic cardiac autonomic nervous system in permanent atrial fibrillation
Eventuais alterações no substrato anatômico miocárdico, no sistema nervoso autônomo (SNA) cardíaco intrínseco, envolvendo os plexos ganglionares (PG) comumente presentes em organizações de gordura epicárdicas denominadas fatpads (FP) ou a expressão dos receptores muscarínicos, poderiam ser responsáveis pela gênese e manutenção da fibrilação
Publicado em: 2011
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24. Autonomic control of cardiorespiratory interactions in fish, amphibians and reptiles
Control of the heart rate and cardiorespiratory interactions (CRI) is predominantly parasympathetic in all jawed vertebrates, with the sympathetic nervous system having some influence in tetrapods. Respiratory sinus arrhythmia (RSA) has been described as a solely mammalian phenomenon but respiration-related beat-to-beat control of the heart has been describe
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07