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Related Concept Videos

Arteries of the Head and Neck01:26

Arteries of the Head and Neck

The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
Assessment of the Cardiovascular System II: Inspection01:29

Assessment of the Cardiovascular System II: Inspection

Inspection is the initial step in assessing the cardiovascular system. It involves a detailed visual examination that provides crucial information about a patient's circulatory and cardiac health. This systematic process, conducted from head to toe, helps identify signs of cardiovascular conditions by observing physical appearance, skin and mucous membranes, jugular and carotid pulsations, chest symmetry, and the condition of the extremities.
Head and Neck
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
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Atherosclerosis III: Management

Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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Related Experiment Video

Updated: Jun 16, 2026

A Model of Disturbed Flow-Induced Atherosclerosis in Mouse Carotid Artery by Partial Ligation and a Simple Method of RNA Isolation from Carotid Endothelium
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Symptomatic Nonstenotic Carotids: A Topical Review.

Luis Savastano1, Waleed Brinjikji2, Helmi Lutsep3

  • 1Department of Neurosurgery, University of California San Francisco (L.S.).

Stroke
|October 11, 2024
PubMed
Summary

Carotid artery disease management is shifting from stenosis degree to plaque vulnerability. Identifying high-risk features in nonstenotic carotid plaques could improve stroke prediction and treatment.

Keywords:
carotid plaqueintraplaque hemorrhageischemic strokeriskvulnerable plaque

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Area of Science:

  • Vascular Neurology
  • Cardiovascular Medicine
  • Interventional Radiology

Background:

  • Current carotid artery disease management prioritizes stenosis degree (≥50%) for stroke risk assessment and intervention.
  • This approach may overlook vulnerable plaques in nonstenotic (<50%) arteries, contributing to cryptogenic strokes.
  • Intraplaque hemorrhage and other plaque features offer superior prognostic value over stenosis alone.

Purpose of the Study:

  • To review the historical context of carotid artery disease management.
  • To integrate contemporary biomarkers of plaque vulnerability into a mechanistic understanding of thromboembolization.
  • To discuss imaging tools, clinical studies, and targeted treatments for symptomatic nonstenotic carotid artery disease.

Main Methods:

  • Historical review of carotid artery disease management guidelines.
  • Analysis of contemporary biomarkers for plaque vulnerability (e.g., intraplaque hemorrhage, lipid-rich necrotic core, fibrous cap rupture).
  • Review of imaging modalities for detecting vulnerable plaque features.
  • Synthesis of recent clinical studies on symptomatic nonstenotic carotid disease and its management.

Main Results:

  • Accumulating evidence highlights structural and biological plaque features as critical indicators of stroke risk.
  • Symptomatic nonstenotic carotid plaques with high-risk features may underlie a subset of embolic strokes of undetermined source.
  • Advanced imaging is revealing the prevalence and natural history of this underdiagnosed condition.

Conclusions:

  • Reclassifying symptomatic nonstenotic carotid plaques with high-risk features is proposed.
  • Targeted treatments for this subgroup could prevent recurrent cerebrovascular events.
  • High-level evidence is needed to align clinical practice with contemporary understanding of plaque instability.