Rationale: A Swedish cardiac surgical centre has published numerous studies demonstrating that harvesting the SVG with a cushion of surrounding fat and without vein graft distension, "no touch" technique, improved surrogate markers of vein preservation in operative specimens. Graft patency was superior in a single small RCT (8.5 year patency: "no touch" 90% vs. conventional 76%, p=0.01, adjusted OR 3.7, 95% CI 1.4-9.6, p=0.007).