Abstract： To the Editor:A 65-year-old patient was admitted into Department of Coronary Heart Disease of The First Affiliated Hospital on June 10,2014 because of"paroxysmal chest pain for 13 years and relapsed and aggravated for 5 days." Patient experienced squeezing pain in the precordium with chest congestion,palpitation,and excessive perspiration but without any spreading,nausea and vomiting under no any apparent incentives 13 years ago.Those symptoms might be eased after 20 min of rest.Patient was diagnosed and treated as acute anterior myocardial infarction (MI) in a local hospital,and discharged after improved by secondary prevention of drug treatment.Chest pain was relapsed and aggravated 5 d ago,and patient was admitted into the hospital for further treatment.Past history included 8-year history of Type Ⅱ diabetes.Auxiliary examinations showed that electrocardiogram (ECG) was sinus rhythm and no deviated cardiac electric axis;the heart rate was 57 beats/min;lead Ⅱ,Ⅲ,aVF and V3-V6 had abnormal Q waves and no flat or invert T waves.The primary diagnoses after admission were:(1) coronary heart disease (CHD),unstable angina (UA),and old MI (inferior wall and anterior wall);(2) Type Ⅱ diabetes.