Abstract Echocardiography is the most used diagnostic method for measuring left ventricular systolic function indices. It is possible to estimate, in a quick, available, and non-invasive way, parameters such as ventricular volumes, stroke volume, and ejection fraction. Being an expert in the technique is quite important to estimate these parameters accurately. Being able to refine the technique constantly is also important, and this is closely associated with the examiner’s experience and knowledge of the current software solutions. In this review […]

Introduction The echocardiogram plays a central role in assessments of patients with heart failure (HF), contributing to its classification, etiology definition, severity stratification, hemodynamic assessment, and clinical follow-up. HF has been historically divided according to the echocardiographic parameter left ventricular ejection fraction (LVEF). The most recent classification divided it into preserved (≥50%), reduced (≤40%), and slightly reduced LVEF (41–49%)., Different societies have recently proposed a universal definition of HF that involves the presence of symptoms and signs caused by structural […]

Abstract Introduction: Chagas disease, an infection caused by the protozoan Trypanosoma cruzi, is an important health problem worldwide that causes cardiac dilation, arrhythmias, and death. Heart failure is a complex syndrome with high morbidity and mortality rates that progresses with similar complications. The New York Heart Association functional classification is used to categorize heart failure severity and stratify heart disease risks and therapies. A reduced left ventricular ejection fraction measured by echocardiography is directly related to a poor prognosis. Objective: […]

Abstract Background Left ventricular ejection fraction is one of the most used echocardiographic parameters in clinical practice. Its estimation by two-dimensional manual method (Simpson method) has limited reproducibility and accuracy, and semi-automatic methods have been proposed. It becomes necessary to compare the semi-automatic two-dimensional method with more accurate methods of assessing left ventricular ejection fraction, such as measurement by automatic three-dimensional echocardiography. Objective To compare the left ventricular ejection fraction, and left ventricular end-diastolic and end-systolic volumes estimates by the […]

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Summary Introduction Modification of internal thoracic artery flow occurs after its anastomosis in the left anterior descending coronary artery. Objective To evaluate the effect of ligation of the proximal branches of anastomosed internal thoracic artery flow on the left anterior descending in relation to velocities and coronary flow velocity reserve in patients with left ventricular ejection fraction preserved (> 50%). Methods Prospective study of patients with left ventricular ejection fraction > 50% and revascularized. Group I was composed of 25 […]

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Summary Introduction The left ventricle diastolic dysfuntion (LVDD) can lead to heart failure with preserved ejection fraction. Echocardiography, especially the tissue Doppler, is the main exam. The clinic has dyspnea as a typical symptom, which is evaluated by modified Medical Research Council (mMRC). However, there are few studies that investigate what is the association between the symptom and LVDD. Objective Evaluate if dyspnea is associated with the advancement of LVDD and if there is a linkage between mMRC and the […]