- Only patients with a normal cardiac history and physical exam or in lieu of this, an institutionally normal ejection fraction as measured by either ECHO or MUGA scan are eligible; specifically, there should be: no EKG evidence of active cardiac disease (i.e., arrhythmias, ischemia), no history of congestive heart failure (CHF), no history of myocardial infarction or ischemia, no history of arrhythmia (other than bradycardia treated by pacing), no current cardiac medications for the control of CHF or arrhythmias, no S3 gallop rhythm, or peripheral edema, and no chest X-ray findings compatible with CHF; EKG must be performed within 42 days prior to registration