[Assessment of right ventricular function using contrast echocardiography in patients with myocardial infarction].

Objective: To evaluate right ventricular size, motility, and ejection fraction (RVEF) by contrast echocardiography.

Methods: We studied consecutive patients admitted to the coronary intensive care unit with acute inferior myocardial infarction, without prior infarction and with or without right ventricle involvement, according to accepted electrocardiographic findings. Polygelin, 3.

The value of electrocardiographic R-wave changes in exercise testing: Preexercise versus postexercise measurements.

To determine the usefulness of R-wave amplitude changes during exercise testing for the diagnosis of coronary artery disease (CAD) and to understand the discrepancies that have been described in the literature regarding their value, we studied two groups of patients by means of electrocardiographic (EKG) treadmill testing and coronary arteriography. Group I was composed of 149 patients who were studied prospectively. The specificity of R-wave changes measured from preexercise to immediately postexercise (SRV(5)) was 81%, but that of R-wave changes measured from preexercise to peak exercise (URV(5)) was 46%.