- Subjects with a history at any time in the past of coronary artery disease, congestive heart failure, angina, myocardial infarction, any cardiac surgery, valvular heart disease, clinically significant arrhythmia, dyspnea, pulmonary edema, stroke, or transient ischemic attack. ECG exclusion criteria: Heart rate-<40 and >100 beats per minute, PR Interval-<120 and >200msec, QRS duration-<70 and >110msec.