Ventricular Assistance Device
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Early reduction of pulmonary arterial hypertension in patients using a long-term mechanical ventricular assistance device: a cross-sectional study
ABSTRACT BACKGROUND: Severe pulmonary arterial hypertension (PAH) is a contraindication for heart transplantation (HT). It has been correlated with increased early and late mortality, mainly associated with right ventricular failure. Ventricular assistance devices (VADs) can promote reduction of intracardiac pressures and consequent reduction of PAH over th
Sao Paulo Medical Journal. Publicado em: 2022
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2. Heterotopic Heart Transplantation as a Left Ventricular Biological Assistance: a New Two-Stage Method Proposal
Abstract Since Barnard’s first heterotopic heart transplant in 1974, Copeland’s method has been the greatest contribution to heterotopic transplants but has the drawback of donor’s right ventricular atrophy. This new method proposes a modification in the anastomosis of the superior vena cava aiming to pre-serve donor’s right ventricular function by d
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-12
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3. 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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4. Avaliação e aperfeiçoamento de uma bomba de sangue centrífuga implantável ápice ventricular para assistência cardíaca / Evaluation and improvement of an apico-aortic centrifugal blood pump for cardiac assist
In this work an experimental study was realized with the Apico-Ventricular Blood Pump (AVBP) used as a ventricular assist device. This study is part of the device s development and the results were used for project evaluation and improvement. AVBP is a continuous flow centrifugal blood pump for ventricular assistance in chronic cardiac patients. Initially, a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2012
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5. Projeto, construção e testes de um dispositivo de assistência ventricular : bomba de sangue centrífuga implantável / Design, manufacturing and evaluation of a ventricular assistance device : implantable centrifugal blood pump
Uma Bomba de Sangue Centrífuga Implantável (BSCI) foi projetada e construída para assistência ventricular de longa duração no tratamento de pacientes portadores de doenças cardiovasculares. A proposta do projeto foi desenvolver um Dispositivo de Assistência Ventricular (DAV) com custos reduzidos, originalidade de desenho e tecnologia nacional. A geom
Publicado em: 2011
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6. Estudo do controle uni-axial do mancal de levitação magnética do tipo atração para potência nula (ZPC, zero power control). / Control study of uni-axial magnetic levitation bearing type attraction to zero power (ZPC, zero power control).
O mancal magnético base deste trabalho é de 1-GDL(grau de liberdade) de controle uni-axial com circuito magnético híbrido do tipo atração, o qual foi desenvolvido em 2000 na Escola Politécnica da Universidade de São Paulo por Silva e Horikawa [1][2]. Nas duas extremidades do rotor são fixados ímãs, e em oposição ficam os atuadores eletromagnéti
Publicado em: 2011
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7. Emprego da anastomose cavo-pulmonar associada a assistência ventricular esquerda com bomba centrífuga em modelo experimental de disfunção biventricular / Cavo-pulmonary anastomosis associated to centrifugal pump left ventricle assistance in a experimental model of biventricular heart failure
Introdução: A utilização de dispositivos de assistência ventricular esquerda (DAVE) proporciona melhor manejo dos pacientes que necessitam de métodos alternativos como ponte para o transplante cardíaco. Parcela significativa dos pacientes sob uso de DAVE desenvolve falência de ventrículo direito (VD), com elevada mortalidade. Propusemos estudo exper
Publicado em: 2008
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8. Projeto, construção e testes de desempenho "In Vitro" de uma bomba de sangue centrifuga implantavel / Design, manufacture and performance tests "In Vitro" of an implantable centrifugal blood pump
An implantable centrifugal blood pump was developed for long-term ventricular assistance in cardiac patients. In vitro tests were performed, as wear evaluation, performance tests and hemolysis tests in human blood. Preliminary tests were performed with a non-implantable pump in order to properly locate the inlet port. Numerical computational simulations were
Publicado em: 2007
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9. Implantable left ventricular assist devices: an evolving long-term cardiac replacement therapy.
OBJECTIVE: The authors' 8-year experience with both inpatient and outpatient left ventricular assist device (LVAD) support is presented to show the possibilities and limitations of long-term outpatient mechanical circulatory assistance. SUMMARY BACKGROUND DATA: The limitation of suitable cardiac donors has led to the use of LVADs as a temporizing measure for
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10. Mechanical Circulatory Assist Devices
Cardiogenic shock occurs in about 10% of the 1.5 million patients who suffer myocardial infarction and in approximately 1% of the 200,000 patients who undergo open-heart surgery each year. The ventricular assist device decreases the workload of the failing ventricles and increases the blood flow through the coronary system. Recovery of failing myocardium aft