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Related Concept Videos

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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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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Vulnerable plaque imaging: updates on new pathobiological mechanisms.

Konstantinos Toutouzas1, Georgios Benetos2, Antonios Karanasos3

  • 1First Department of Cardiology, Hippokration Hospital, Athens Medical School, 114 Vasilissis Sofias Av., 11527 Athens, Greece ktoutouz@gmail.com.

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Identifying vulnerable atherosclerotic plaques is crucial for preventing cardiovascular events. New research explores local plaque features like microcalcifications and biomechanics to improve prediction accuracy.

Keywords:
Endothelial shear stressInflammationMiRNAsMicrocalcificationsVulnerable plaque

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Area of Science:

  • Cardiovascular Research
  • Pathology
  • Medical Imaging

Background:

  • Early identification of vulnerable, rupture-prone atherosclerotic plaques aims to prevent cardiovascular events.
  • Current imaging techniques identify plaque vulnerability, but their clinical predictive value is limited as few plaques rupture or cause clinical events.
  • The factors driving localized plaque vulnerability within a pro-inflammatory environment remain largely unknown.

Purpose of the Study:

  • To review novel mechanisms implicated in vulnerable plaque formation and rupture.
  • To analyze the potential clinical value of these newly recognized mechanisms.

Main Methods:

  • Literature review of recent research on vulnerable plaque formation and rupture.
  • Analysis of emerging local plaque features and their contribution to plaque instability.
  • Evaluation of the clinical implications of identified mechanisms.

Main Results:

  • Newly recognized local features, such as microcalcifications and biomechanical factors, are implicated in vulnerable plaque development.
  • These factors may explain the localized vulnerability of culprit plaques.
  • Understanding these mechanisms is key to improving risk stratification.

Conclusions:

  • Emerging local features offer new insights into vulnerable plaque formation and rupture.
  • Further research into these mechanisms could enhance the clinical prediction of cardiovascular events.
  • Translating these findings into clinical practice holds significant potential for cardiovascular event prevention.