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Related Experiment Video

Updated: Jul 2, 2026

Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model
07:49

Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model

Published on: February 14, 2025

Aortic arch atheroma.

Jorge A Zavala1, Pierre Amarrenco, Stephen M Davis

  • 1National Stroke Research Institute, Heidelbergh Heights, Victoria, Australia.

International Journal of Stroke : Official Journal of the International Stroke Society
|August 19, 2008
PubMed
Summary
This summary is machine-generated.

Severe aortic arch atheroma significantly increases stroke risk. Identifying this condition via transoesophageal echocardiogram is crucial for patients with unexplained ischemic stroke to guide aggressive prevention strategies.

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Area of Science:

  • Cardiovascular Medicine
  • Neurology
  • Vascular Surgery

Background:

  • Severe atheroma of the aortic arch is a significant risk factor for stroke and peripheral embolism.
  • The prevalence of severe aortic arch atheroma in acute ischemic stroke patients (over 20%) rivals that of atrial fibrillation and carotid atherosclerosis.
  • Atheroma thickness >4mm or mobile components increase recurrent stroke risk, especially in elderly, smokers, or those with hypertension/diabetes.

Purpose of the Study:

  • To highlight the clinical significance of severe aortic arch atheroma as a cause of stroke.
  • To recommend diagnostic approaches for identifying aortic arch atheroma in stroke patients.
  • To discuss secondary prevention strategies for patients with aortic arch atheroma.

Main Methods:

  • Literature review and synthesis of existing data on aortic arch atheroma and stroke.
  • Analysis of odds ratios for stroke associated with severe and mobile atheroma.
  • Discussion of diagnostic modalities, including transoesophageal echocardiogram.
  • Review of current and proposed secondary prevention strategies.

Main Results:

  • Severe aortic arch atheroma has an odds ratio >4 for stroke; mobile atheroma has an odds ratio >12.
  • Transoesophageal echocardiogram is a reasonable method to diagnose severe aortic arch atheroma in cryptogenic stroke.
  • Patients with severe aortic arch atheroma face a high risk of recurrent events (14.2% per year).

Conclusions:

  • Severe aortic arch atheroma is an established, significant, and prevalent cause of ischemic stroke.
  • Prompt diagnosis via transoesophageal echocardiogram is warranted in select stroke patients.
  • Aggressive secondary prevention is necessary, with ongoing trials to determine optimal therapy (antiplatelets vs. anticoagulation).