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Angioscopic assessment of coronary lesions underlying thrombus
S Waxman1, M A Mittleman, S W Zarich
1Cardiovascular Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA.
Insights
This study found that coronary artery plaques with thrombus are typically yellow and disrupted. This supports that lipid-rich plaques are prone to thrombosis and disruption.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Pathology
Background:
- Intracoronary thrombus formation is a critical event in various coronary syndromes.
- Understanding the characteristics of coronary lesions associated with thrombus is essential for effective treatment.
- Percutaneous transluminal coronary angioplasty (PTCA) is a common intervention for coronary artery disease.
Purpose of the Study:
- To investigate the angioscopic characteristics of coronary lesions containing thrombus before PTCA.
- To correlate plaque morphology with the presence of intracoronary thrombus in patients with coronary syndromes.
Main Methods:
- Angioscopy was used to visualize coronary lesions in patients undergoing PTCA.
- Lesions associated with thrombus were specifically analyzed for plaque characteristics.
- Data from patients with various coronary syndromes were included.
Main Results:
- Coronary lesions underlying intracoronary thrombus were predominantly characterized as yellow and/or disrupted.
- These findings align with in vitro studies indicating the thrombogenicity of lipid-rich plaques.
- Plaque disruption was observed to be associated with in situ thrombosis.
Conclusions:
- Yellow, disrupted plaques are characteristic of coronary lesions with thrombus.
- Lipid-rich plaques are highly thrombogenic.
- Plaque disruption is a significant factor in the development of in situ coronary thrombosis.
Abstract:
This study examines the characteristics of coronary lesions in which thrombus is found as assessed by angioscopy before percutaneous transluminal coronary angioplasty in patients with various coronary syndromes. Our findings demonstrate that the plaque underlying intracoronary thrombus is usually yellow and/or disrupted, and support in vitro observations that lipid-rich plaques are highly thrombogenic and that disruption of these plaques is associated with in situ thrombosis.