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Related Concept Videos

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Coronary Artery Disease I: Introduction01:30

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Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
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Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

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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 is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
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Coronary Artery Disease II: Pathophysiology01:26

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Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Carotid Artery Calcification: What We Know So Far.

Madeeha Ahmed1, Regina McPherson2, Alexandra Abruzzo3

  • 1Family Medicine, American University of Antigua College of Medicine, Antigua, ATG.

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Carotid artery calcification (CAC), a marker of atherosclerosis, involves distinct intimal and medial types. Early detection via imaging is crucial for managing this condition linked to significant health risks.

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Area of Science:

  • Cardiovascular Medicine
  • Vascular Biology
  • Medical Imaging

Background:

  • Carotid artery calcification (CAC) is a significant indicator of atherosclerosis, associated with increased morbidity and mortality.
  • CAC comprises intimal and medial types, each with unique risk factors and underlying pathological mechanisms.
  • Vascular calcification is an active, regulated process involving inflammation, endothelial dysfunction, and mineral deposition.

Purpose of the Study:

  • To review the pathophysiology, diagnostic modalities, and therapeutic strategies for carotid artery calcification.
  • To highlight the importance of early identification and management of CAC.
  • To discuss the current understanding of vascular calcification as an active biological process.

Main Methods:

  • Review of current literature on carotid artery calcification.
  • Discussion of diagnostic imaging techniques including computed tomography angiography (CTA), magnetic resonance angiography (MRA), duplex ultrasound (DUS), PET-CT, and Optical Coherence Tomography (OCT).
  • Analysis of therapeutic interventions such as best medical care, carotid endarterectomy, and carotid stenting.

Main Results:

  • CAC progresses from microcalcifications due to inflammation to macrocalcifications (hydroxyapatite crystals) that stabilize plaques.
  • Various imaging modalities aid in early detection, plaque composition analysis, and calculating the carotid artery calcification score.
  • Both carotid endarterectomy and carotid stenting show comparable outcomes when considering patient-specific factors.

Conclusions:

  • Early diagnosis of CAC using imaging is critical due to its asymptomatic nature and association with severe outcomes.
  • Management involves best medical care, with surgical interventions like endarterectomy and stenting offering comparable benefits under specific conditions.
  • Understanding CAC as an active, inflammatory process informs diagnostic and therapeutic approaches.