Angiographic estimation of atherosclerotic disease burden in a coronary artery fed by collaterals: a potential
Grigorios Tsigkas1, Panagiota Mylona, Periklis Davlouros
1Cardiology Department, University Hospital of Patras, Patras, Greece. gregtsig@hotmail.com
Insights
Percutaneous coronary intervention successfully treated a chronic total occlusion in the left anterior descending artery. Comprehensive assessment of collateral circulation is crucial for complex coronary artery disease management.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Biology
Background:
- Revascularization strategies like percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) have advanced.
- A significant patient subset is ineligible for PCI or CABG due to complex coronary anatomy.
- Challenges include diffuse disease, small vessels, chronic total occlusions (CTO), and calcified lesions.
Observation:
- A middle-aged, asymptomatic patient with a CTO lesion in the left anterior descending artery was successfully treated with PCI.
- Coronary angiography alone may underestimate atherosclerotic burden in collateral-dependent arteries.
- Detailed assessment of collateral flow is vital for treatment decisions.
Findings:
- Successful PCI for a CTO lesion in the left anterior descending artery was achieved.
- Collateral circulation assessment, including residual antegrade flow and collateral filling, is critical.
- Invasive or noninvasive techniques can aid in evaluating collateral function.
Implications:
- This case highlights the potential of PCI in managing CTOs previously deemed untreatable.
- Accurate assessment of collateral pathways can refine revascularization decision-making in complex coronary artery disease.
- Improved understanding of collateral circulation may expand treatment options for patients with severe coronary artery disease.
Abstract:
Despite the remarkable advances in revascularization strategies made during the last decade, a significant proportion of patients are excluded from either percutaneous coronary intervention or coronary artery bypass grafting because of unsuitable coronary anatomy. Diffuse severe coronary artery disease, small vessel caliber, chronic total occlusions, or extremely calcified vessels are frequent reasons for deferring revascularization with either percutaneous coronary intervention or coronary artery bypass grafting. We present a case concerning a middle-aged asymptomatic patient who was treated successfully with percutaneous coronary intervention due to a chronic total occlusion lesion of the left anterior descending artery. Coronary angiography is an inadequate method for the estimation of the burden of atherosclerotic disease in an artery fed by collaterals. Assessment of any residual antegrade flow, and ipsilateral and contralateral collateral filling of the segments distal to the occlusion with invasive or noninvasive techniques, could affect the appropriate decision-making by physicians.
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