Publications by authors named "Maria L E Vicario"
Background: Strain rate is a promising echocardiographic technique which adds further information to that obtained with two-dimensional echocardiography and tissue Doppler imaging (TDI). The present study aimed to evaluate the effects of acute isotonic volume expansion on left ventricular function in patients with idiopathic dilated cardiomyopathy (DCM) utilizing TDI and strain rate measurements.
Methods: Ten patients with DCM and a left ventricular ejection fraction (LVEF) View Article and Find Full Text PDF
Unlabelled: Coronary artery disease (CAD) risk factors influence the hyperemic response in patients without coronary artery stenosis. The aim of this study was to evaluate the influence of risk factors on coronary flow reserve (CFR) estimated by (99m)Tc-sestamibi cardiac imaging in patients with 1-vessel CAD.
Methods: Forty-eight patients with 1-vessel CAD were enrolled in the study.
Background: This study compared coronary flow reserve (CFR) estimated by technetium 99m sestamibi imaging with the results obtained with intracoronary Doppler in patients with coronary artery disease. Intraobserver and interobserver reproducibility of the radionuclide-estimated CFR was also assessed.
Methods And Results: Fourteen consecutive patients (mean age, 54 +/- 7 years) with documented coronary artery disease in whom percutaneous coronary intervention was planned underwent dipyridamole (0.
Background: The myocardial length-tension and the force-frequency relations are important mechanisms that regulate the contractile strength of the heart.
Aims: To evaluate in humans the effect on left ventricular function of the interaction between the myocardial length-tension and force-frequency relations.
Methods And Results: Eight patients with dilated cardiomyopathy (DCM) and 6 control subjects underwent radionuclide monitoring of left ventricular function during atrial pacing, saline loading and atrial pacing at the end of saline loading.
Background: Patients with mild heart failure show a reduction in preload reserve mechanism during volume expansion. At this time, the effects of volume expansion on left ventricular (LV) diastolic filling in this subset of patients have not been well characterized.
Methods: We evaluated the effects of acute volume loading on Doppler parameters of LV filling in 10 healthy control subjects and in 12 patients with idiopathic dilated cardiomyopathy (DCM).