Multiple Arterial Revascularization versus Single in a patients with coronary artery disease

INTERVENTION: A randomized study comparing two groups of patients undergoing coronary artery bypass grafting (CABG) at our institute. Patient first group underwent multiarterial coronary bypass surgery (left and right mammary arteries, radial artery). Materials: Two hundred patients listed for CABG Procedures: All CABGs were performed through a median sternotomy during cardiopulmonary bypass. Full heparinization was given. It anticipated to take an additional 20 minutes for multiarterial coronary bypass surgery Who: heart surgeon with 10 years experience Mode of delivery: face to face Number of times: twice / week to the surgeon performing the CABG procedure All participants will be followed for up to 12 years after the initial surgery. CONDITION: Cardiovascular ‐ Coronary heart disease Coronary artery bypass grafting patency;Coronary heart disease; ; Coronary artery bypass grafting patency ; Coronary heart disease Surgery ‐ Surgical techniques PRIMARY OUTCOME: Coronary flow reserve on Single photon emission computed tomography (SPECT)[Assessed once at 30 days post‐surgery] Major adverse cardiac events (MACE) (which are death from any cause, myocardial infarction [MI], or unplanned revascularization for ischemia). This outcome is assessed by data‐linkage to medical records.[Death from any cause, myocardial infarction [MI], or unplanned revascularization for ischemia are assessed for 30 days post‐surgery.] SECONDARY OUTCOME: Major adverse cardiac events(MACE) (which are death from any cause, myocardial infarction [MI], or unplanned revascularization for ischemia). This outcome is assessed by data‐linkage to medical records.[at 1 and 5 year after operation] INCLUSION CRITERIA: coronary artery disease