 - History of any of the following cardiac conditions within 6 months of screening: myocardial infarction, acute coronary syndrome, unstable angina, new onset atrial fibrillation, new onset atrial flutter, second- or third-degree atrioventricular block, ventricular fibrillation, ventricular tachycardia, heart failure, cardiac surgery, interventional cardiac catheterization with or without a stent placement, interventional electrophysiology procedure, or presence of implanted defibrillator. 