Cardiac Conduction System
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Update in Heart Rhythm Abnormalities and Indications for Pacemaker After Transcatheter Aortic Valve Implantation
Abstract Objective: Rhythm abnormalities following transcatheter aortic valve implantation (TAVI) and indications for permanent pacemaker implantation (PPI) were reviewed, which aren't well established in the current guidelines. New left bundle branch block and atrioventricular block are the most common electrocardiographic changes after TAVI. PPI incidence
Braz. J. Cardiovasc. Surg.. Publicado em: 2018-06
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2. 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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3. 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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4. Cardiorespiratory evaluation of juvenile rats experimentally envenomed with Tityus serrulatus venom
Accidental envenomation caused by Tityus serrulatus scorpions is very common in Brazil and may result in serious cardiorespiratory alterations that are frequently fatal to children. In the present study, the effects of T. serrulatus venom on the cardiorespiratory system of recently weaned male Wistar rats were evaluated. Fifteen animals were distributed into
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2010
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5. Chagas heart disease: pathophysiologic mechanisms, prognostic factors and risk stratification
Chagas heart disease (CHD) results from infection with the protozoan parasite Trypanosoma cruzi and is the leading cause of infectious myocarditis worldwide. It poses a substantial public health burden due to high morbidity and mortality. CHD is also the most serious and frequent manifestation of chronic Chagas disease and appears in 20-40% of infected indiv
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-07
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6. Aspectos comparativos entre os tipos de irrigação ventricular e do nó sinoatrial em coração de gato / Comparative aspects among the irrigation types of both ventricular and sinoatrial node in cats
Utilizou-se 30 corações de gatos sem raça definida, machos e fêmeas, adultos de idades variadas que não portavam nenhuma afecção cardíaca. Os corações foram injetados pela aorta torácica com Neoprene Latex 450, corados com pigmento vermelho. Verificou-se quando do predomínio da vascularização ventricular do tipo esquerda (63,34%) que a região
Publicado em: 2009
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7. Chagas disease: what is known and what is needed - A background article
Chagas disease began millions of years ago as an enzootic disease of wild animals and started to be transmitted to man accidentally in the form of an anthropozoonosis when man invaded wild ecotopes. Endemic Chagas disease became established as a zoonosis over the last 200-300 years through forest clearance for agriculture and livestock rearing and adaptation
Memórias do Instituto Oswaldo Cruz. Publicado em: 2007-10
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8. Acompanhamento de pacientes chagásicos portadores de arritmia ventricular submetidos a implante de cardioversor-desfibrilador.
The natural history of Chagas disease has two important distinct phases: acute and chronic. The chronic phase usually occurs thirty to forty years after the initial infestation. Cardiac arrhythmia and electric conduction disturbances are manifestations of chronic phase of Chagas disease. Life threatening ventricular arrhythmias present on this phase, may be
Publicado em: 2004
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9. Noninvasive cardiac assessment in children of women with systemic lupus erythematosus
OBJECTIVE: Noninvasive cardiac assessment of newborns and infants of women with systemic lupus erythematosus. The children had no congenital total atrioventricular block and were compared with the children of healthy women. METHODS: We prospectively assessed 13 newborns and infants aged 1 to 60 days, children of women with systemic lupus erythematosus and wi
Arquivos Brasileiros de Cardiologia. Publicado em: 2003-11
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10. Variação do debito cardiaco na estimulação artificial em ponta do ventriculo esquerdo, ponta do ventriculo direito e biventricular : estudo experimental em porcos
The experimental models admit the study of the artificial pacemakers in heart physiological phenomena and its correlation with the clinical practice. The purposes of this work were to pattern the technique of production of complete experimental AV block and to study the variation of the cardiac output in the sinus rhythm, in the AV block and with cardiac pac
Publicado em: 2003
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11. Neonatal lupus syndrome: the heart as a target of the immune system
Neonatal lupus erythematosus (NLE) is an auto-immune disease related to systemic lupus erythematosus (SLE). Unlike SLE it is not a spontaneous syndrome but rather an acquired one. In NLE the most common disease manifestations are a transient cutaneous lesion and cardiac conduction disturbances. The cutaneous lesions and other non-cardiac manifestations of NL
Anais da Academia Brasileira de Ciências. Publicado em: 2000-03
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12. Nkx2-5 mutation causes anatomic hypoplasia of the cardiac conduction system
Heterozygous mutations of the cardiac transcription factor Nkx2-5 cause atrioventricular conduction defects in humans by unknown mechanisms. We show in KO mice that the number of cells in the cardiac conduction system is directly related to Nkx2-5 gene dosage. Null mutant embryos appear to lack the primordium of the atrioventricular node. In Nkx2-5 haploinsu
American Society for Clinical Investigation.