Related Experiment Video

Updated: Aug 16, 2026

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
08:42

Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research

Published on: October 22, 2014

[Diffuse atherosclerotic disease unmasked by invasive physiologic assessment of coronary flow]

Fernando Mendes Sant'Anna1, Expedito E Ribeiro da Silva, Leonardo Alves Batista

  • 1Santa Helena Hospital do Coração, Cabo Frio, RJ. fernandomendes@cardiol.br

Arquivos Brasileiros De Cardiologia
|August 23, 2005
PubMed

Insights

Coronary atherosclerosis is often diffuse, not just focal. Fractional flow reserve (FFR) measurements revealed widespread disease despite a stented lesion, highlighting the importance of comprehensive assessment in patients with coronary artery disease.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Vascular Biology

Background:

  • Coronary atherosclerosis is a complex, diffuse process often underestimated by traditional angiography.
  • Stable angina post-acute myocardial infarction (AMI) requires careful evaluation of coronary lesions.

Observation:

  • A patient with a severe lesion in the left anterior descending artery (ADA) after AMI showed significant ischemia (FFR=0.37).
  • Post-stent implantation in the ADA, the FFR remained borderline (0.75), indicating persistent ischemia.

Findings:

  • Intracoronary pressure measurements using a pressure wire (PW) demonstrated a continuous pressure increase from distal to proximal ADA.
  • This pressure gradient indicated diffuse atherosclerosis, not solely focal stenosis at the stented site.

Implications:

  • Angiography may not fully reveal the extent of diffuse coronary atherosclerosis.
  • FFR assessment, including pullback analysis, is crucial for understanding the physiological significance of coronary lesions and guiding treatment decisions.
  • Comprehensive medical management is essential for patients with diffuse coronary artery disease.

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