Clinical trials and graft patency data in coronary artery surgery--a 30-year perspective

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Cardiac Surgery

Background:

• Coronary artery disease (CAD) treatment has advanced significantly over the last 50 years.
• Medical, surgical, and percutaneous interventions have evolved, driven by clinical trials and observational studies.
• Current practice in coronary artery revascularization relies heavily on evidence from large-scale studies.

Purpose of the Study:

• To trace the historical evolution of coronary artery disease treatment modalities.
• To review landmark trials comparing medical, surgical, and percutaneous interventions.
• To discuss current trends and future directions in CAD management, including graft choices.

Main Methods:

• Historical review of randomized controlled trials and large cohort observational studies.
• Analysis of comparative effectiveness of different revascularization strategies.
• Examination of graft patency studies and conduit selection in coronary artery bypass surgery.

Main Results:

• Medical therapy and percutaneous intervention are now primary CAD treatments.
• Drug-eluting stents have reduced early recurrence rates associated with percutaneous intervention.
• Coronary artery bypass surgery remains the preferred option for advanced CAD, left main disease, and complex multi-vessel disease, particularly with impaired left ventricular function.

Conclusions:

• Bilateral internal thoracic artery grafting is the preferred conduit for coronary artery bypass surgery, though not universally adopted.
• The optimal choice of arterial conduits is critical for long-term surgical strategy in CAD.
• Ongoing research continues to define the role of various arterial conduits in surgical CAD treatment.