title: Unstable angina: the case for operation.
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000000981:diagnostic imaging / Q000503:physiopathology; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D005260:Female; D005500:Follow-Up Studies; D006321:Heart / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000188:drug therapy / Q000209:etiology; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011183:Postoperative Complications; D012306:Risk