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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
Severe coronary artery disease: is there a place for percutaneous coronary intervention?
William R Herzog1, Andrew Farb
1Carnegie 568, The Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD 21287, USA. wherzog1@jhmi.edu
Insights
Coronary artery bypass graft surgery remains the primary treatment for severe coronary artery disease. However, percutaneous coronary intervention shows comparable survival rates, though requiring more repeat procedures.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Severe coronary artery disease (CAD), including multivessel and left main artery disease, presents complex management challenges.
- Coronary artery bypass graft (CABG) surgery is the traditional treatment, but advancements in percutaneous coronary intervention (PCI) prompt reevaluation of treatment strategies.
- The evolution of PCI from balloon angioplasty to drug-eluting stents has enabled its application in more complex CAD cases.
Purpose of the Study:
- To review major clinical trials comparing PCI and CABG for severe CAD, focusing on the SYNTAX trial.
- To evaluate the contemporary role and appropriateness of PCI in managing advanced coronary artery disease.
- To discuss the implications of recent trial results for clinical decision-making in severe CAD.
Main Methods:
- Chronological review of major clinical trials comparing PCI and CABG prior to the SYNTAX trial.
- In-depth analysis of the SYNTAX trial results and their impact on current practice.
- Discussion of patient selection criteria and limitations of percutaneous revascularization in advanced CAD.
Main Results:
- Long-term survival rates between PCI and CABG are comparable in patients with advanced CAD, even with evolving percutaneous technologies.
- Patients undergoing PCI for advanced CAD require repeat revascularization more frequently than those treated with CABG.
- A significant number of patients with complex CAD are excluded from trials due to the inability to achieve equivalent revascularization with PCI.
Conclusions:
- Percutaneous coronary intervention has a defined role in managing selected patients with advanced coronary artery disease.
- Coronary artery bypass graft surgery continues to be the primary therapeutic approach for the majority of patients with severe CAD.
- Ongoing technological advancements in PCI may further expand its applicability in complex coronary artery disease management.
Abstract:
Management of severe coronary artery disease (CAD), defined as multivessel disease with or without significant left main artery disease remains a topic for considerable discussion. Although coronary artery bypass graft (CABG) surgery has been the mainstay of treatment, the steady pace of improvement in percutaneous coronary intervention (PCI) continues to beg the question as to whether PCI can perform as well as CABG for these patients. This short review is intended to place the recently published SYNTAX (Synergy between PCI with Taxus and Cardiac Surgery) trial in perspective, considering the previous major clinical trials in this field and to further consider whether PCI can be used appropriately in the management of patients with advanced CAD. The major clinical trials comparing PCI to CABG published prior to SYNTAX are briefly reviewed in chronologic order. The SYNTAX trial is reviewed in more depth and the implications of its results for contemporary clinical management are discussed. PCI has been applied to more advanced forms of CAD as percutaneous technology has evolved from balloon angioplasty to bare metal stents to drug eluting stents. Long-term survival has remained comparable between PCI and CABG patients despite the more advanced nature of disease treated in more recent trials, recognizing that a significant number of patients are excluded from randomization because equivalent revascularization is not achievable percutaneously. Repeat revascularization is more frequently required in PCI patients than in CABG patients. PCI has a role to play, although CABG remains the mainstay of therapy for patients with advanced CAD.
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