12. History of any of the following within the last 6 months before administration of the first dose of the drug: Ischemic myocardial event, including angina requiring therapy and artery revascularization procedures. Ischemic cerebrovascular event, including transient ischemic attack and artery revascularization procedures. Requirement for inotropic support (excluding digoxin) or serious (uncontrolled) cardiac arrhythmia (including atrial flutter/fibrillation, ventricular fibrillation or ventricular tachycardia). Placement of a pacemaker for control of rhythm. New York Heart Association (NYHA) Class III or IV heart failure. Pulmonary embolism.