Graft Patency

The Pilot study for the COMFORT Trial is a single centre trial to determine the feasibility of the full COMFORT Trial. The main COMFORT Trial will be a multi-centre trial to investigate the coronary artery bypass grafting outcomes when harvesting the Left Internal Mammary Artery (LIMA) using a skeletonized approach (artery is isolated without the surrounding veins, fascia and nerves) compared to harvesting the LIMA using a non-skeletonized approach (artery is isolated with the surrounding veins, fascia and nerves). Harvesting the LIMA with the non-skeletonized approach is the standard technique. Participants will complete a Coronary Artery Tomography scan at 1 year to determine if the LIMA graft remains open. Follow up of the participants will continue until 2 years post surgery.

This is a prospective, randomized, double-blind controlled trial comparing the clinical efficacy of total arterial grafting (internal thoracic artery and radial artery) versus conventional mixed grafting (internal thoracic artery and great saphenous vein) in the left coronary artery system during coronary artery bypass grafting (CABG). A total of 400 patients undergoing elective CABG at the Second Hospital of Jilin University will be enrolled and randomized into two groups. The primary endpoint is graft patency at 12 months postoperatively, evaluated by coronary angiography or CT angiography. Secondary outcomes include perioperative complications, major adverse cardiovascular events (MACE), and long-term clinical prognosis. The study aims to provide evidence-based guidance on optimal graft selection in CABG.