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Percutaneous Treatment of Coronary Chronic Total Occlusions Part 1: Rationale and Outcomes
Alfredo Galassi1, Aaron Grantham2, David Kandzari3
1University of Catania, Catania, Italy.
Insights
Treating coronary chronic total occlusions (CTOs) with percutaneous coronary intervention (PCI) can improve heart function and symptoms. A multidisciplinary heart team approach is crucial for optimal strategy and patient outcomes.
Area of Science:
- Cardiology
- Interventional Cardiology
Background:
- Coronary chronic total occlusions (CTOs) are prevalent in coronary artery disease patients.
- CTOs are associated with poorer clinical outcomes and reduced likelihood of complete revascularization.
- Successful CTO percutaneous coronary intervention (PCI) improves angina and left ventricular function.
Purpose of the Study:
- To review the clinical significance of CTOs.
- To discuss the benefits and considerations of CTO PCI.
- To outline optimal strategies for managing CTOs.
Main Methods:
- Literature review on CTOs and their management.
- Discussion of heart team evaluation for revascularization strategies.
- Emphasis on pre-procedural planning and patient consultation.
- Recommendation for drug-eluting stents in CTO PCI.
Main Results:
- Successful CTO PCI improves angina and left ventricular function.
- Potential benefits include reduced arrhythmic events and improved survival (currently unproven).
- Drug-eluting stents show lower restenosis rates than bare metal stents for CTO PCI.
Conclusions:
- CTO PCI can significantly benefit patients with coronary artery disease.
- A heart team approach is essential for optimal treatment planning.
- Ad hoc PCI is discouraged; thorough planning and patient discussion are vital.
- Drug-eluting stents are recommended for CTO PCI to minimize restenosis.
Abstract:
Coronary chronic total occlusions (CTOs) are commonly encountered in patients with coronary artery disease. Compared to patients without coronary CTOs, those with CTO have worse clinical outcomes and lower likelihood of complete coronary revascularisation. Successful CTO percutaneous coronary intervention (PCI) can significantly improve angina and improve left ventricular function. Although currently unproven, successful CTO PCI might also reduce the risk for arrhythmic events in patients with ischaemic cardiomyopathy, provide better tolerance of future acute coronary syndrome, and possibly improve survival. Evaluation by a heart team comprised of both interventional and non-interventional cardiologists and cardiac surgeons is important for determining the optimal revascularisation strategy in patients with coronary artery disease and CTOs. Ad hoc CTO PCI is generally not recommended, so as to allow sufficient time for (a) discussion with the patient about the indications, goals, risks, and alternatives to PCI; (b) careful procedural planning; and (c) contrast and radiation exposure minimisation. Use of drug-eluting stents is recommended for CTO PCI, given the lower rates of angiographic restenosis compared to bare metal stents.
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