Adverse events Adverse events after coronary artery bypass grafting will be recorded. These might include myocardial infarction, myocardial ischemia, bradycardia, hypotension, and stent thrombosis. The investigators will provide a detailed record of date of onset, treatment-related processing method, and possible relationship with treatment. All adverse reactions should be reported to the researcher in charge and clinical Institutional Review Board within 24 hours.