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Updated: May 23, 2026

A New Murine Model of Endovascular Aortic Aneurysm Repair
Published on: July 7, 2013
Aortic atherosclerosis and embolic events
Muhamed Saric1, Itzhak Kronzon
1Leon H. Charney Division of Cardiology, New York University Langone Medical Center, New York, NY 10016, USA. muhamed.saric@nyumc.org
Insights
Aortic plaques, a sign of atherosclerosis, can cause serious embolisms. Management focuses on general atherosclerosis treatment as specific therapies for aortic embolism are lacking.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
Background:
- Aortic plaques result from atherosclerosis, characterized by lipid accumulation and inflammation in the aorta.
- These plaques can lead to thromboemboli and atheroemboli, causing diverse clinical manifestations.
Purpose of the Study:
- To describe the nature of aortic plaques and their embolic potential.
- To highlight diagnostic modalities and current management strategies for aortic embolism.
Main Methods:
- Review of the pathophysiology of atherosclerosis and aortic plaque formation.
- Discussion of clinical consequences of aortic embolism.
- Emphasis on transesophageal echocardiography for diagnosis.
Main Results:
- Aortic plaques can generate thromboemboli causing large artery occlusion (e.g., stroke) and atheroemboli causing small artery occlusion (e.g., blue toe syndrome, renal insufficiency).
- Transesophageal echocardiography is the standard for visualizing thoracic aortic plaques.
Conclusions:
- Aortic embolism is a significant complication of atherosclerosis with varied clinical presentations.
- Currently, no specific treatments exist for aortic embolism; management relies on controlling underlying atherosclerosis.
Abstract:
Aortic plaques are a manifestation of the general process of atherosclerosis in which there is a progressive accumulation of cholesterol and other lipids in the intimal-medial layer of the aorta with secondary inflammation, repetitive fibrous tissue deposition, and eventually luminal surface erosions and appearance of often mobile thrombi protruding into the lumen of the aorta. Aortic plaques may give rise to two types of emboli: thromboemboli and atheroemboli (cholesterol crystal emboli). Thromboemboli are relatively large, tend to occlude medium to large arteries, and cause strokes, transient ischemic attacks, and renal infarcts and other forms of peripheral thromboembolism. Cholesterol crystal emboli are relatively minute, tend to occlude small arteries and arterioles, and may cause the blue toe syndrome, new or worsening renal insufficiency, gut ischemia, etc. Transesophageal echocardiography remains the gold standard for visualization of aortic plaques in the thoracic aorta. There are no proven therapies for aortic embolism per se; general atherosclerosis management strategies are recommended.
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