Prognostic significance of angina pectoris before first acute myocardial infarction

Abstract To delineate the clinical significance and prognostic importance of a history of chronic or new onset angina pectoris before acute myocardial infarction (AMI), 732 consecutive patients admitted for a first AMI were studied and divided into 3 groups. Two hundred patients (27%) had chronic angina before AMI (>1 month); 247 patients (34%) had new onset angina before AMI (