Cardiac Ventricles
Mostrando 1-12 de 116 artigos, teses e dissertações.
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1. A Mass Causing Right Ventricular Outflow Obstruction - A Dreadful Complication
Abstract The most common cardiac tumour in the pediatric age group is rhabdomyoma. These are usually located in the ventricles, either in the ventricular septum or free wall. Cardiac tumours in early infancy may lead to severely compromised blood flow due to inflow or outflow tract obstruction. The diagnosis of cardiac rhabdomyoma can be established by trans
Braz. J. Cardiovasc. Surg.. Publicado em: 02/12/2019
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2. Myocardial remodeling and bioelectric changes in tachycardia-induced heart failure in dogs
In this study, electrical and structural remodeling of ventricles was examined in tachycardia-induced heart failure (HF). We studied two groups of weight-matched adult male mongrel dogs: a sham-operated control group (n=5) and a pacing group (n=5) that underwent ventricular pacing at 230 bpm for 3 weeks. Clinical symptoms of congestive HF were observed in bo
Braz J Med Biol Res. Publicado em: 06/09/2013
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3. Improved relationship between left and right ventricular electrical activation after cardiac resynchronization therapy in heart failure patients can be quantified by body surface potential mapping
OBJECTIVES: Few studies have evaluated cardiac electrical activation dynamics after cardiac resynchronization therapy. Although this procedure reduces morbidity and mortality in heart failure patients, many approaches attempting to identify the responders have shown that 30% of patients do not attain clinical or functional improvement. This study sought to
Clinics. Publicado em: 2013-07
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4. Estudo experimental comparativo entre a derivação cavo-pulmonar associada ao suporte circulatório esquerdo e o suporte circulatório biventricular na falência aguda biventricular / Comparative experimental study between cavopulmonary anastomosis associated with left ventricular assist device support and biventricular circulatory assistance in acute biventricular failure
Background Right ventricular (RV) failure durinq left ventricular assist device (LVAD) support can result in severe hernodynarnic cornpromise with hiqh mortality. Objective: This study investiqated the acute effects of cavopulmonary anastomosis on L VAD performance and riqht ventricular myocardial compromise in comparison with isolated LVAD support and biven
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/10/2012
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5. Avaliação do ventrículo direito nos pacientes com hipertensão pulmonar / Right ventricle evaluation in pulmonary hypertension
Introdução: A fração de ejeção do ventrículo direito (FEVD) é um importante fator prognóstico em pacientes com hipertensão pulmonar (HP), porém a sua medida é complicada e demorada devido à complexidade anatômica do ventrículo direito (VD). O TAPSE (Tricuspid Annular Plane Systolic Excursion) é um bom índice da FEVD, mas ele avalia apenas o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2012
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6. Avaliação experimental do metabolismo energético em dois protocolos de sobrecarga sistólica do ventrículo direito / Experimental evaluation of energy metabolism in two right ventricle systolic overload protocols
Objective: Altered energy metabolism has been identified in myocardial hypertrophy. Some processes are considered beneficial, whereas others are linked to heart failure. The purpose of this study was to compare the activity of three different energy metabolism enzymes in two different protocols of right ventricle (RV) systolic overload in young goats. Method
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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7. The effect of beta-blockade on myocardial remodelling in Chagas' cardiomyopathy
OBJECTIVE: Chagas' disease has spread throughout Latin America because of the high rate of migration among these countries. Approximately 30% of Chagas' patients will develop cardiomyopathy, and 10% of these will develop severe cardiac damage leading to heart failure. Beta-blockade improves symptoms and survival in heart failure patients; however, its effica
Clinics. Publicado em: 2012-09
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8. Análise da função ventricular direita em dois protocolos de treinamento com bandagem ajustável do tronco pulmonar / Assessment of right ventricular function in two training protocols with adjustable pulmonary banding
The ideal surgical treatment of transposition of the great arteries is the Jatene operation during the neonatal period. If the neonate remains untreated for several reasons, the left ventricle may become unprepared to sustain systemic circulation. The preparation of the subpulmonary ventricle by pulmonary trunk (PT) banding is an option for the 2-stage Jaten
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
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9. Detecção do complexo QRS em sinais cardiacos utilizando FPGA / QRS complex detection in cardiac signals using FPGA
The electrocardiogram (ECG) is a tool used for diagnosis of diseases related to the heart. This work has the purpose of detecting QRS complex, focusing on the R wave, which represents the ventriclescontraction. It is presented two techniques of processing ECG signals. The first uses Pan &Tompkins algorithm based on digital filtering. The second uses the di
Publicado em: 2009
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10. PressÃo arterial, frequÃncia cardÃaca e sua modulaÃÃo autonÃmica em ratos malnutridos em diferentes idades
Undernutrition during human development is one of the principal causes of various systemic alterations and is characterized as one of the greatest public health problems in underdeveloped countries. Using an experimental model that reproduces in rats a type of human malnutrition found in the Northeast of Brazil, we use a multideficient hypoproteic and hyperc
Publicado em: 2009
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11. Effect of pectin and cellulose in the toxicity of pyrethroids insecticides in electrocardiographics and morphologicals parameters in male weaning Wistar rats. / Efeito da pectina e da celulose na toxicidade de inseticidas piretroides sobre parametros eletrocardiograficos e morfologicos em ratos Wistar machos recem desmamados.
The study was conducted on male wealing Wistar rats. They were exposed, by gavage, to deltamethrin and permethrin and the carditoxic effects of the pyrethroids and protective effects of dietary fibres were determinated. The purposes of this study were the eletrocardiographics evaluation, the histopathological study of the liver and heart and the residues det
Publicado em: 2008
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12. Prevalence of hepatitis C and B virus infection in patients with idiopathic dilated cardiomyopathy in Brazil: a pilot study
The idiopathic dilated cardiomyopathy (IDMC) is a disease of the cardiac muscle characterized by systolic dilation and/or dysfunction of one or both ventricles, symptoms of congestive heart failure and risk of early death. Several studies in animal models and in humans have supported the hypothesis of the viral infection as initial event in the immunopathoge
Brazilian Journal of Infectious Diseases. Publicado em: 2007-06