Results: 18

Trabalho Miocárdio: uma revisão sistemática do novo método de ecocardiografia e aplicações clínicas

ABC., imagem cardiovasc; 35 (4), 2022
Fundamento: O trabalho miocárdico (MW) é uma nova modalidade de imagem que surgiu como uma forma potencial de avaliação da função ventricular esquerda (VE) em vários cenários clínicos. Ele calcula curvas de tensão de ecocardiografia de rastreamento de manchas (STE) com uma curva de pressão LV ...

Reserva de velocidade de fluxo coronariano e da contratilidade miocárdica sob estresse no dilema da memória isquêmica pós-infarto

ABC., imagem cardiovasc; 35 (1), 2022

Cenário Disfuncional dos Principais Componentes Responsáveis pelo Equilíbrio do Trânsito de Cálcio Miocárdico na Insuficiência Cardíaca Induzida por Estenose Aórtica

Arq. bras. cardiol; 118 (2), 2022
Resumo Fundamento O remodelamento cardíaco patológico se caracteriza por disfunção diastólica e sistólica, levando à insuficiência cardíaca. Neste contexto, o cenário disfuncional do trânsito de cálcio miocárdico (Ca2+) tem sido pouco estudado. Um modelo experimental de estenose aórtica t...

Deslocamento linear longitudinal do ventrículo esquerdo comparado ao strain longitudinal global por ressonância magnética cardiovascular

ABC., imagem cardiovasc; 35 (2), 2022
Introdução: A função sistodiastólica do ventrículo esquerdo é prognóstica nas doenças cardiovasculares e pode ser avaliada por strain longitudinal global por meio de ecocardiografia e de ressonância magnética cardíaca. O strain longitudinal global pela ressonância magnética cardíaca exige ...

Essential oil of the leaves of Eugenia sulcata preserve myocardial contractility and does not present immunotoxicity

The essential oil of the leaves of Eugenia sulcata, in the Myrtaceae family, has a demonstrated antihypertensive effect, but its effects on heart muscle and its toxicity have not yet been elucidated. Little chemical or biological data are available for E. sulcata, whether emphasizing the beneficial effec...

Physical Exercise and Regulation of Intracellular Calcium in Cardiomyocytes of Hypertensive Rats

Arq. bras. cardiol; 111 (2), 2018
Abstract Background: Regulation of intracellular calcium (Ca2+) in cardiomyocytes is altered by hypertension; and aerobic exercise brings benefits to hypertensive individuals. Objective: To verify the effects of aerobic exercise training on contractility and intracellular calcium (Ca2+) transients of c...

Influence of Aerobic Training on The Mechanics of Ventricular Contraction After Acute Myocardial Infarction: A Pilot Study

Arq. bras. cardiol; 110 (4), 2018
Abstract The study of myocardial contractility, based on the new anatomical concepts that govern cardiac mechanics, represents a promising strategy of analysis of myocardial adaptations related to physical training in the context of post-infarction. We investigated the influence of aerobic training on ph...

Moderate Continuous Aerobic Exercise Training Improves Cardiomyocyte Contractility in Β1 Adrenergic Receptor Knockout Mice

Arq. bras. cardiol; 110 (3), 2018
Abstract Background: The lack of cardiac β1-adrenergic receptors (β1-AR) negatively affects the regulation of both cardiac inotropy and lusitropy, leading, in the long term, to heart failure (HF). Moderate-intensity aerobic exercise (MCAE) is recommended as an adjunctive therapy for patients w...

Risk factors for delayed extubation after ventricular septal defect closure: a prospective observational study

Objective: The objective of our study was to determine the feasibility of early extubation and to identify the risk factors for delayed extubation in pediatric patients operated for ventricular septal defect closure. Methods: A prospective, observational study was carried out at our Institute. This stud...

Effect of Lactation on myocardial vulnerability to ischemic insult in rats

Arq. bras. cardiol; 108 (5), 2017
Abstract Background: Cardiovascular diseases are the leading cause of mortality and long-term disability worldwide. Various studies have suggested a protective effect of lactation in reducing the risk of cardiovascular diseases. Objective: This study was designed to assess the effects of pregnancy and ...