Arterialization in coronary artery surgery in Japan and Hong Kong

Area of Science:

• Cardiovascular Surgery
• Vascular Biology
• Graft Patency

Background:

• Saphenous vein grafts used in coronary artery bypass grafting (CABG) are prone to atherosclerosis, leading to graft failure over time.
• Vein graft disease significantly impacts long-term patient outcomes and cardiac event rates following CABG procedures.
• Internal thoracic artery grafts demonstrate superior long-term patency and clinical results compared to vein grafts.

Purpose of the Study:

• To evaluate the long-term efficacy of different conduits in coronary artery bypass grafting.
• To explore the potential of utilizing autologous arterial conduits beyond the internal thoracic artery for myocardial revascularization.
• To assess the safety and effectiveness of multi-arterial grafting strategies in CABG.

Main Methods:

• Review of historical data and clinical assessments of various graft conduits used in CABG over 35 years.
• Comparative analysis of long-term patency rates between saphenous vein grafts and arterial grafts.
• Investigation into the clinical utilization and outcomes of newly investigated autologous arterial conduits.

Main Results:

• Saphenous vein grafts exhibit significant deterioration due to atherosclerosis (vein graft disease).
• Internal thoracic artery grafts maintain excellent long-term patency, correlating with improved longevity and fewer postoperative cardiac events.
• Clinical use of additional autologous arterial conduits alongside the internal thoracic artery is feasible.

Conclusions:

• Multi-arterial grafting strategies in coronary artery bypass grafting can be safely implemented.
• The use of multiple arterial conduits, including the internal thoracic artery, is associated with improved long-term results in CABG patients.
• Arterial conduits represent a promising alternative to vein grafts for enhanced myocardial revascularization outcomes.