Coronary revascularization for patients with unprotected left main coronary artery disease: evidence, guidelines, and
Issam D Moussa1, S Chiu Wong, Ted Feldman
1Department of Medicine, Division of Cardiology, Weill Medical College of Cornell University, New York, New York 10021, USA. ism9003@med.cornell.edu
Insights
Current guidelines favor coronary artery bypass graft (CABG) surgery over percutaneous coronary interventions (PCI) for unprotected left main coronary artery disease (ULMCAD). This review examines the weak evidence and advocates for patient-centered decision-making.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Current guidelines recommend coronary artery bypass graft (CABG) surgery (Class IA) for unprotected left main coronary artery disease (ULMCAD) revascularization.
- Percutaneous coronary interventions (PCI) for ULMCAD are currently a Class III recommendation.
- The evidence supporting these guideline recommendations is considered weak and outdated.
Purpose of the Study:
- To critically reevaluate the current state-of-the-art in revascularization for patients with ULMCAD who are suitable surgical candidates.
- To highlight the discrepancy between existing practice guidelines and patient-centered clinical decision-making.
- To appraise the evidence base for current guidelines and review emerging data comparing CABG and PCI for ULMCAD.
Main Methods:
- Literature review and critical appraisal of existing evidence.
- Analysis of current clinical practice guidelines for ULMCAD.
- Evaluation of contemporary data on CABG versus PCI for ULMCAD.
Main Results:
- Guideline recommendations for ULMCAD treatment are based on weak and outdated evidence.
- A divergence exists between guideline-based practice and patient-centered decision-making.
- Emerging data may challenge the current preferential recommendation for CABG over PCI in select ULMCAD patients.
Conclusions:
- The current evidence supporting guideline recommendations for ULMCAD revascularization is insufficient.
- A contemporary approach to ULMCAD treatment requires critical appraisal of evidence and patient-specific factors.
- Decision-making for ULMCAD should integrate current knowledge and prioritize patient-centered care over rigid guideline adherence.
Abstract:
The current clinical practice guidelines categorize the use of coronary artery bypass graft (CABG) surgery for revascularization of patients with unprotected left main coronary artery disease (ULMCAD) as a class IA recommendation while it categorize the use of percutaneous coronary interventions (PCI) as a class III recommendation. The evidence underlying these recommendations is weak and out dated. The purpose of this review is to critically reevaluate current state-of-the-art with respect to revascularization of patients with ULMCAD who are acceptable surgical candidates. In doing so we will highlight the divergence between practice guidelines and patient-centered clinical decision-making; critically appraise the "evidence" underlying the current practice guidelines; review the emerging data regarding utility of CABG versus PCI in these patients; and finally discuss the elements of a contemporary approach to clinical decision-making in light of the current state of knowledge.
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