Abbreviations
OVH: Open Vein Harvesting, EVH: Endoscopic Vein Harvesting, CABG: Coronary Artery Bypass Grafting, OPCAB: Off Pump Coronary Artery Bypass, GSV: Great Saphenous Vein, DM: Diabetes Mellitus, HTN; Hypertension, COPD: Chronic Obstructive Pulmonary Disease, BMI: Body Mass Index, CKD: Chronic Kidney Disease, Hb: Hemoglobin, EF: Ejection Fraction, PVD: Peripheral Vascular Disease, VAS: Visual Analog Scale, SSI: Surgical Site Infection, MIDCAB: Minimal Invasive Direct Coronary Artery Bypass, OPD: Out Patient Discharge.