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	Provedor de dados BJMBR (5) Autor Nóbrega,A.C.L. (5) Castro,R.R.T. (3) Silva,B.M. (2) Bousquet-Santos,K. (1) Carvalho,A.C.G. (1) Castro,R.R.T. de (1) Junior,M. Sant'Anna (1) Liberman,A. (1) Moreno,A.M. (1) Neves,F.J. (1) Porphirio,G. (1) Ribeiro,J.P. (1) Rocha,J.D. (1) Rocha,N.G. (1) Sales,A.R.K. (1) Serra,S.M. (1) Soares,P.P.S. (1) Thomaz,T.G. (1) Villacorta,H. (1) Zimerman,L.I. (1) Mais... Palavra-chave Exercise test (2) Anticholinesterase (1) Autonomic nervous system (1) Blood flow (1) Blood pressure (1) Cardiac electrophysiology (1) Cardiovascular disease (1) Cardiovascular system (1) Cholinesterase inhibitors (1) Heart failure (1) Metaboreflex (1) Muscles respiratory (1) Parasympathetic nervous system (1) Plethysmography (1) Pyridostigmine (1) Pyridostigmine bromide (1) QTc interval (1) Stable angina (1) Stroop test (1) Vascular reactivity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2014 (1) 2012 (1) 2010 (1) 2005 (1) 2002 (1) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Acute electrophysiologic consequences of pyridostigmine inhibition of cholinesterase in humans BJMBR Zimerman,L.I.; Liberman,A.; Castro,R.R.T.; Ribeiro,J.P.; Nóbrega,A.C.L.. 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 for diagnostic cardiac electrophysiologic study underwent two studies just before and 90-120 min after the oral administration of pyridostigmine (45 mg). Pyridostigmine was well tolerated by all patients. Wenckebach nodal anterograde atrioventricular point and basic cycle were not altered by pyridostigmine. Sinus recovery time (ms) was shorter during a 500-ms cycle stimulation (pre: 326 ± 45 vs post:... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cardiac electrophysiology; Parasympathetic nervous system; Cholinesterase inhibitors; Cardiovascular disease; Pyridostigmine bromide; Autonomic nervous system. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000200013 Cholinergic stimulation with pyridostigmine reduces the QTc interval in coronary artery disease BJMBR Castro,R.R.T.; Porphirio,G.; Serra,S.M.; Nóbrega,A.C.L.. Parasympathetic dysfunction is an independent risk factor in patients with coronary artery disease; thus, cholinergic stimulation is a potential therapeutic measure that may be protective by acting on ventricular repolarization. The purpose of the present study was to determine the effects of pyridostigmine bromide (PYR), a reversible anticholinesterase agent, on the electrocardiographic variables, particularly QTc interval, in patients with stable coronary artery disease. In a randomized double-blind crossover placebo-controlled study, simultaneous 12-lead electrocardiographic tracings were obtained at rest from 10 patients with exercise-induced myocardial ischemia before and 2 h after the oral administration of 45 mg PYR or placebo. PYR increased the RR... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyridostigmine; QTc interval; Stable angina; Anticholinesterase. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000600008 Hemodynamic mechanisms of the attenuated blood pressure response to mental stress after a single bout of maximal dynamic exercise in healthy subjects BJMBR Neves,F.J.; Carvalho,A.C.G.; Rocha,N.G.; Silva,B.M.; Sales,A.R.K.; Castro,R.R.T. de; Rocha,J.D.; Thomaz,T.G.; Nóbrega,A.C.L.. To determine the hemodynamic mechanisms responsible for the attenuated blood pressure response to mental stress after exercise, 26 healthy sedentary individuals (age 29 ± 8 years) underwent the Stroop color-word test before and 60 min after a bout of maximal dynamic exercise on a treadmill. A subgroup (N = 11) underwent a time-control experiment without exercise. Blood pressure was continuously and noninvasively recorded by infrared finger photoplethysmography. Stroke volume was derived from pressure signals, and cardiac output and peripheral vascular resistance were calculated. Perceived mental stress scores were comparable between mental stress tests both in the exercise (P = 0.96) and control (P = 0.24) experiments. After exercise, the blood pressure... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cardiovascular system; Blood pressure; Exercise test; Stroop test. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000700007 Intercostal and forearm muscle deoxygenation during respiratory fatigue in patients with heart failure: potential role of a respiratory muscle metaboreflex BJMBR Moreno,A.M.; Castro,R.R.T.; Silva,B.M.; Villacorta,H.; Junior,M. Sant'Anna; Nóbrega,A.C.L.. The purpose of this study was to determine the effect of respiratory muscle fatigue on intercostal and forearm muscle perfusion and oxygenation in patients with heart failure. Five clinically stable heart failure patients with respiratory muscle weakness (age, 66±12 years; left ventricle ejection fraction, 34±3%) and nine matched healthy controls underwent a respiratory muscle fatigue protocol, breathing against a fixed resistance at 60% of their maximal inspiratory pressure for as long as they could sustain the predetermined inspiratory pressure. Intercostal and forearm muscle blood volume and oxygenation were continuously monitored by near-infrared spectroscopy with transducers placed on the seventh left intercostal space and the left forearm. Data were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart failure; Metaboreflex; Muscles respiratory. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001100972 Subacute effects of a maximal exercise bout on endothelium-mediated vasodilation in healthy subjects BJMBR Bousquet-Santos,K.; Soares,P.P.S.; Nóbrega,A.C.L.. We evaluated vascular reactivity after a maximal exercise test in order to determine whether the effect of exercise on the circulation persists even after interruption of the exercise. Eleven healthy sedentary volunteers (six women, age 28 ± 5 years) were evaluated before and after (10, 60, and 120 min) a maximal exercise test on a treadmill. Forearm blood flow (FBF) was measured by venous occlusion plethysmography before and during reactive hyperemia (RH). Baseline FBF, analyzed by the area under the curve, increased only at 10 min after exercise (P = 0.01). FBF in response to RH increased both at 10 and 60 min vs baseline (P = 0.004). Total excess flow for RH above baseline showed that vascular reactivity was increased up to 60 min after exercise (mean ±... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vascular reactivity; Exercise test; Blood flow; Plethysmography. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000400017 Registros recuperados: 5 Primeira ... 1 ... Última

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