A transparent grid for estimating peak Vcf directly from the echocardiograph recording is described. Estimates so obtained were compared with peak Vcf measurements made by an echocardiographic digitising technique and with the angiographic ejection fraction in 13 patients with normal left ventricular function and 17 patients with impaired left ventricular function. No patient had angiographic s...

Right and left heart volumes, ejection fractions and ventricular outputs were determined from biplane cineangiocardiograms in infants with symptomatic coarctation of the aorta and correlated with clinical and hemodynamic alterations. Patients were divided into two age groups: group 1, aged 3.5 to 14 days and group 2, 5 weeks to 7 1/2 months. Infants in group 1 had severe depressions of left ven...

We have assessed right and left ventricular function by multigated radionuclide ventriculography in 12 consecutive patients with acquired immunodeficiency syndrome (AIDS) grouped according to the CDC classification system for HIV infection. Results were correlated with clinical, electrocardiographic and echocardiographic findings. Clinical examination and chest x-ray films showed no evidence of...

15% [6]. After exploring the clinical characteristics of the patients studied by Bestetti et al. [1], it was found that data related to a higher risk for malignant arrhythmias were more present in the chagasic group than in the hypertensive group, such as the occurrence of ventricular premature complexes (46% versus 18%, p b 0.005), and the necessity for the use of amiodarone (39% versus 19%, p...

BACKGROUND The aim of this study was to assess the effect of left ventricular dysfunction on right ventricular ejection fraction during exercise in heart failure patients and its implications in functional capacity and blood pressure response. METHODS In a cross-sectional study 65 patients with heart failure were included. Left and right ventricular ejection fractions were evaluated by radio-...

Introduction: The purpose of this study was to assess velocity-encoded cardiac magnetic resonance imaging (Ve-CMR) in a population of patients referred for cardiac magnetic resonance imaging (CMR), to determine the variability of atrial function, and to identify clinical parameters associated with left atrial function. Methods: This is a prospective study evaluating patients who were referred t...

We studied the hemodynamic response to supine bicycle exercise in 20 patients late (10 + 2 years) after aortic valve replacement (for aortic stenosis in 12 patients, aortic insufficiency in six patients, and for combined stenosis and insufficiency in two patients). The pulmonary artery wedge pressure was obtained with a pulmonary artery balloon catheter, and left ventriculography was performed ...