- History of any or more of the following cardiovascular conditions: cardiac angioplasty (within 6 months) or stenting (within 6 months) and/or myocardial infarction (MI) (within 6 months) or cerebro-vascular event within the past 6 months, unstable angina, vascular disease, class III or IV, congestive heart failure (as defined by the New York Heart Association (NYHA))