Therapeutic Options for Left Main, Left Main Equivalent, and Three-Vessel Disease

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Cardiac Surgery

Background:

• Patients with left main, left main equivalent, and three-vessel coronary artery disease (CAD) have advanced disease and poor prognosis.
• Guideline-directed medical therapy is often insufficient, necessitating mechanical revascularization with coronary artery bypass graft (CABG) surgery or percutaneous coronary intervention (PCI).

Purpose of the Study:

• To review the current evidence comparing CABG surgery and PCI for revascularization in patients with advanced CAD, specifically left main and three-vessel disease.
• To identify patient subgroups and disease characteristics where PCI may be a viable alternative to CABG.

Main Methods:

• Review of clinical trial data, including SYNTAX, FREEDOM, EXCEL, and NOBLE trials.
• Analysis of outcomes based on disease severity (SYNTAX score), patient comorbidities (diabetes), and clinical presentation (stable vs. acute myocardial infarction).

Main Results:

• PCI is preferred for acute myocardial infarction. CABG remains the standard for stable advanced CAD.
• PCI may be suitable for low-to-intermediate SYNTAX score left main disease and low SYNTAX score three-vessel disease.
• CABG surgery demonstrated superiority in diabetic patients with multivessel disease.
• Recent trials suggest PCI has a favorable role in select low-to-moderate risk left main stem disease patients.

Conclusions:

• The choice between CABG and PCI for advanced CAD depends on disease complexity, patient factors, and clinical presentation.
• PCI is increasingly recognized as a valuable alternative to CABG in specific patient subsets with left main and three-vessel coronary artery disease.