Chamber Of Perfusion
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. New insight on the relationship between lethal electrical fields versus cardiomyocyte orientation
Abstract Introduction Cardiovascular diseases represent a major cause of death world-wide and one of their greatest complications is the development of cardiac arrhythmias, in which ventricular fibrillation (VF) stands out as the most severe one. The only therapy that reverses VF is defibrillation. However defibrillatory shock is capable of killing heart c
Res. Biomed. Eng.. Publicado em: 13/09/2018
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2. Testing electrode suitability for field stimulation of high-threshold biological preparations
IntroductionA problem posed by electrical field (E) stimulation of biological preparations with high excitation threshold is that the E intensity required for excitation is likely to induce water electrolysis at the electrode surface, which can alter the extracellular medium and cause deleterious effects on the cells. In this study, different electrode mater
Res. Biomed. Eng.. Publicado em: 2015-09
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3. Regurgitação valvar funcional em insuficiência cardíaca congestiva descompensada: monitoração não-invasiva por bioimpedância cardíaca e ecocardiografia e resposta à terapêutica / Functional valvular incompetence in decompensated heart failure: noninvasive monitoring and response to medical management.
Objective: We hypothesized that functional mitral and tricuspid valvular incompetence (MR and TR, respectively) are reversible causes of reduced cardiac output in decompensated heart failure (DF) that accompanies systolic dysfunction in ischemic or nonischemic cardiomyopathy. Background: DF, defined as signs and symptoms of heart failure at rest, is rooted i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2009
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4. Aneurysm pulsatility after endovascular exclusion: an experimental study using human aortic aneurysms
OBJECTIVE: To measure the pulsatility of human aneurysms before and after complete exclusion with an endograft. METHOD: Five aortic aneurysms obtained during necropsy were submitted to pulsatile perfusion before and after implantation of a bifurcated endograft. The specimens were contained in a closed chamber filled with saline solution. A vertical tube atta
Clinics. Publicado em: 2008
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5. In vitro Candida spp adhesion on acrylic resins and denture liners / Avaliação in vitro da adesão de Candida spp sobre a superficie de resinas acrilicas para base e reembasamento de protese removiveis
Candida-associated stomatitis is reported in up to 67% of a population wearing dentures. Recently, disease-associated Candida species have shifted from C. albicans to norralbicans species. Since factors such as presence of saliva and oral bacteria appear to play a major role in the initial phases of yeasts adhesion, this study aimed to determine whether thes
Publicado em: 2006
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6. Estudo comparativo de parâmetros elétricos na absorção de substratos Na+/H+-dependentes em epitélio jejunal e ileal de coelho em câmaras de ussing / Comparative study of electric parameters in the substratum absorption Na+/H+-dependentes in epitélio jejunal and ileal de coelho in Chambers of Ussing
A cólera é uma doença que se tornou endêmica no Nordeste do Brasil após a pandemia iniciada no Peru em 1991. A toxina do Vibrio cholerae (TC) causa potente ação secretória no intestino delgado, podendo levar a desequilíbrio hidro-eletrolítico e choque hipovolêmico nos pacientes com cólera. Postulamos que a administração de substratos, tais como
Publicado em: 2002
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7. Ocular hypothermia: anterior chamber perfusion.
The anterior chambers of 27 rabbit eyes were perfused at constant pressure with room temperature (25 degrees C) or cooled (11 degrees C) balanced salt solution at constant flow rates of 4.8 ml/min or 8.5 ml/min. Intraocular temperature changes in the anterior chamber, anterior vitreous, mid vitreous, and posterior vitreous and on the retina surface were moni
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8. Effects of permanent dual chamber pacing on myocardial perfusion in symptomatic hypertrophic cardiomyopathy.
OBJECTIVE: Angina and the presence of myocardial ischaemia are common in hypertrophic cardiomyopathy. Dual chamber pacing results in clinical improvement in these patients. This study evaluates the effects of permanent dual chamber pacing on absolute regional myocardial perfusion and perfusion reserve. SETTING: University hospital. PATIENTS AND DESIGN: Six p
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9. Redistribution of myocardial perfusion during permanent dual chamber pacing in symptomatic non-obstructive hypertrophic cardiomyopathy: a quantitative positron emission tomography study.
Dual chamber pacing causes significant symptomatic improvement in many patients with hypertrophic cardiomyopathy. The mechanism behind this beneficial response is not fully understood. Positron emission tomography showed a redistribution of myocardial flow during pacing in a patient with non-obstructive hypertrophic cardiomyopathy. Early septal activation re
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10. Comparison of Acute Alterations in Left Ventricular Relaxation and Diastolic Chamber Stiffness Induced by Hypoxia and Ischemia: ROLE OF MYOCARDIAL OXYGEN SUPPLY-DEMAND IMBALANCE
To clarify conflicting reports concerning the effects of ischemia on left ventricular chamber stiffness, we compared the effects of hypoxia at constant coronary perfusion with those of global ischemia on left ventricular diastolic chamber stiffness using isolated, perfused rabbit hearts in which the left ventricle was contracting isovolumically. Since chambe
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11. Effect of hypothermic perfusion on corneal endothelial morphology.
The effect of moderate in-vivo hypothermic perfusion on corneal endothelial integrity was studied in the cat. Eleven cats underwent in-vivo anterior chamber perfusion for 30 minutes with either normothermic (23 degrees C) or hypothermic (5 degrees C) perfusate. Corneas were then evaluated clinically (biomicroscopy), functionally (vital staining), and morphol
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12. Development of a novel microperfusion chamber for determination of cell membrane transport properties.
A novel microperfusion chamber was developed to measure kinetic cell volume changes under various extracellular conditions and to quantitatively determine cell membrane transport properties. This device eliminates modeling ambiguities and limitations inherent in the use of the microdiffusion chamber and the micropipette perfusion technique, both of which hav