Investigators will enroll 400 patients with ischemic cardiomyopathy who were admitted to the Chinese PLA General Hospital. All patients enrolled in this study will collect detailed baseline clinical data, including blood, enzymes (troponin, creatine kinase), blood sugar, serum creatinine, blood lipid levels (LDL lipoprotein cholesterol, high density lipoprotein cholesterol, triglycerides, total cholesterol), brain natriuretic peptide (BNP), inflammatory markers (high sensitivity C- reactive protein, interleukin-6), endothelin (ET-1), pancreas glucagon-like peptide -1 (GLP-1) and superoxide dismutase (SOD).