Safety and Effectiveness of No-touch Technique for Ascending Aorta in Minimally Invasive Cardiac Surgery Coronary Artery Bypass Grafting(MICS-CABG)
The goal of this single-center prospective cohort study is to compare perioperative safety metrics and follow-up survival analyses in patients receiving Minimally Invasive Cardiac Surgery Coronary Artery Bypass Grafting(MICS-CABG) and Off-Pump Coronary Artery Bypass(OPCAB). The main question it aims to answer is: Is the bridge vessel patency rate of patients in the MICS-Notouch group noninferior to that of a saphenous vein bridge with conventional open-chest bypass? Participants will be divided into two groups: Exposure group (MICS-Notouch group): non-extracorporeal circulation multiple coronary artery bypass grafting surgery performed under direct visualization of a small incision in the left chest, including the application of LIMA (left internal mammary artery) + SVG (saphenous vein) multiple bypass grafting. Control group (OPCAB group): conventional median chest opening, non-extracorporeal circulation multi-branch coronary artery bypass graft surgery.
• Patients with angina pectoris who experience functional limitations in daily life and work despite conservative medical treatment and who require coronary artery bypass grafting surgery, as confirmed by coronary angiography, are eligible for enrollment.
• Patients with calcification of the ascending aorta, as confirmed by CT, who are not suitable for sidewall clamping are also eligible for enrollment.