- Patients with evidence of ischemia or stress testing, Electrocardiogram (ECG) evidence of ischemia, a significant arrhythmia, cardiac failure, recent coronary surgery, uncontrolled hypertension, angina or a myocardial infarction within 12 months. Pretreatment stress test will be required for all participants greater than 50 years of age or 45 years of age if diabetic.