Unstable angina. Unstable angina pectoris = heart failure or history of unstable angina Angina pectoris requiring antianginal medications Unstable angina Unstable angina pectoris ? months prior to study participation Unstable angina Unstable angina Unstable angina Unstable angina pectoris Unstable angina pectoris. Unstable angina pectoris or cardiac arrhythmia Known unstable or uncontrolled angina pectoris Angina pectoris requiring therapy Unstable angina pectoris or cardiac arrhythmia; Angina pectoris requiring therapy Unstable angina pectoris Unstable angina defined as angina (or anginal equivalent) or more times per week despite medical therapy. Unstable angina pectoris on medication Unstable angina Unstable cardiac disease, including unstable angina or unstable hypertension, as defined by the need for change in medication for lack of disease control within the last three months If they have angina or unstable coronary disease Have unstable angina Angina Unstable angina or angina requiring surgical or medical intervention; and/or unstable angina, Unstable angina Unstable angina Unstable angina Patients with unstable occlusive disease (eg, crescendo angina) History of unstable angina within year of study entry Unstable angina