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2023 ACC/AHA Chronic Coronary Disease Guideline - An opportunity to reestablish coronary artery bypass
Adnaldo da Silveira Maia1, Magaly Arrais Dos Santos2
1Instituto Dante Pazzanese de Cardiologia, IDPC, São Paulo, Brazil.
Summary
Coronary artery bypass grafting (CABG) remains a vital treatment for multivessel coronary artery disease. Recent guidelines have downgraded CABG recommendations, sparking debate among surgical societies and prompting a review of supporting scientific evidence.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Clinical Evidence Synthesis
Background:
- Coronary artery bypass grafting (CABG) has a long history of evidence-based practice.
- Recent guidelines (2021 ACC/AHA/SCAI, 2023 ACC/AHA) have altered recommendations for CABG in multivessel coronary artery disease.
- Major cardiothoracic surgery societies (AATS, STS) contest these downgraded recommendations.
Purpose of the Study:
- To critically evaluate the scientific evidence supporting coronary artery bypass grafting.
- To provide a broader perspective on the role of CABG in multivessel coronary artery disease.
- To address the controversy surrounding recent guideline changes.
Main Methods:
- Review of published scientific studies and clinical evidence.
- Analysis of guideline recommendations and their impact.
- Synthesis of expert society opinions and positions.
Main Results:
- Evidence from robust studies supports the continued efficacy of CABG.
- The downgrade in recommendations may not fully reflect the existing body of evidence.
- Discrepancies exist between guideline panels and major surgical societies.
Conclusions:
- Further discussion and re-evaluation of evidence are needed regarding CABG for multivessel coronary artery disease.
- The role of CABG should be considered in light of comprehensive scientific data and expert consensus.
- Current evidence suggests CABG remains a crucial revascularization strategy for select patients.

