What is coronary artery bypass grafting (CABG)?

We take a part mostly of internal mammary artery (easy access) and less from gastro-epiploic artery (GEA) and rarely radial artery. We may take greater and lesser saphenous vein grafts Do coronary anastomosis, so we get arterial CABG We may also do venous CABG (in case we do 4 CABGs) Atypical CABGs (LIMA-LAD, LIMA-Dg-LAD, SV-Mg)