- History of cardiac disease including congestive heart failure New York Heart Association (NYHA) Class >/=III, unstable angina (anginal symptoms at rest) or new-onset angina (within the last 6 months) or myocardial infarction within the past 6 months or cardiac arrhythmias requiring anti-arrhythmic therapy except for beta-blockers and digoxin; evidence for uncontrolled coronary artery disease (e.g. major regional wall motion abnormalities on baseline echocardiography or a left ventricular ejection fraction (LVEF) <45%)