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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

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Coronary endothelial dysfunction is associated with a reduction in coronary artery compliance and an increase in wall

Takuro Takumi1, Eric H Yang, Verghese Mathew

  • 1Division of Cardiovascular Disease, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA. lerman.amir@mayo.edu

Heart (British Cardiac Society)
|May 8, 2010
PubMed

Insights

Early atherosclerosis involves endothelial dysfunction, reduced coronary artery compliance, and increased wall shear stress. This study investigated these factors in patients without significant coronary stenosis.

Area of Science:

  • Cardiovascular Research
  • Medical Imaging
  • Atherosclerosis Research

Background:

  • Endothelial dysfunction is linked to arterial stiffness in major arteries.
  • Early atherosclerosis can affect coronary artery properties.

Purpose of the Study:

  • To investigate the association between coronary endothelial dysfunction, coronary artery compliance, and wall shear stress.
  • To examine these factors in patients with early atherosclerosis.

Main Methods:

  • Assessed coronary endothelial function using intracoronary acetylcholine in 120 patients.
  • Calculated acceleration of peak velocity (ACC) and wall shear rate (WSR).
  • Measurements were taken at baseline and after nitroglycerin to isolate compliance.

Main Results:

  • Patients with abnormal endothelial function showed higher WSR and ACC post-nitroglycerin.
  • Nitroglycerin altered coronary flow patterns without increasing coronary blood flow.
  • Abnormal endothelial function correlated with decreased coronary artery compliance and increased WSR.

Conclusions:

  • Early coronary atherosclerosis with endothelial dysfunction is associated with reduced coronary artery compliance.
  • Increased wall shear stress is observed early in the atherosclerosis process.
  • Coronary wall properties are impacted early in atherosclerosis.
Abstract

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