A Clinical Randomized Controlled Trial of the New Method of Selective Coronary Vein Bypass Graft (SCVBG)

Exclusion Criteria

• •Severe heart failure(ejection fraction under 35%) or non coronary atherosclerotic heart disease patients such as combined with severe valvular heart disease.
• •Patients with acute myocardial infarction.
• •Assistant examinations indicate that the bridge vessels can't be used；The left subclavian artery stenosis and/or LIMA lesions；RIMA lesions；varicosis of both great saphenous vein.