title: New Q waves after aortocoronary bypass surgery. Unmasking of an old infarction.
mesh_terms: D006328:Cardiac Catheterization; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000601:surgery; D004562:Electrocardiography; D004691:Endarterectomy; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008943:Mitral Valve / Q000601:surgery; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000209:etiology; D011183:Postoperative Complications; D011859:Radiography; D012501:Saphenous Vein / Q000637:transplantation; D013997:Time Factors; D014182:Transplantation, Autologous