Assessment of Myocardial Viability Utilizing Myocardial Contrast Echocardiography

Fecha de inicio: 1 de mayo de 1999

Patients undergoing evaluation for CAD who show at least two myocardial segments with wall motion abnormalities on a baseline echocardiogram will be offered to participate in this study. Patients will be adults older than 21 years of age. No pre-menopausal patients who are lactating, are pregnant or potentially pregnant as judged by history, physical examination, ultrasound or urine pregnancy test. No one with unstable angina. No subjects with recent myocardial infarction (less than 1 month). No one with frequent ectopy which precludes adequate imaging acquisition. No subjects with significant hypertension (systolic blood pressure greater than 170 mm Hg). No hypotension with basal sitting systolic arterial pressure less than 100 mm HG confirmed 30 minutes later. No subjects with sinus tachycardia greater than or equal to 100 beats/minute. No atrial fibrillation. No inadequate two-dimensional echocardiographic windows.