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Updated: Aug 4, 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

[Hemodynamic study for the assessment of atherosclerotic occlusive disease]

H Shigematsu1, Y Hosoi, T Komiyama

  • 1Department of Surgery, Faculty of Medicine, University of Tokyo, Japan.

Nihon Geka Gakkai Zasshi
|July 1, 1996
PubMed

Insights

Doppler ultrasonography is a reliable method for assessing ischemic limb severity. Near infrared spectroscopy offers new insights into muscle oxygenation during exercise in arteriosclerosis obliterans patients.

Area of Science:

  • Vascular Medicine
  • Diagnostic Imaging
  • Biomedical Engineering

Context:

  • Ischemic limb assessment is crucial for managing peripheral artery diseases.
  • Arteriosclerosis Obliterans (ASO) significantly impacts limb perfusion and function.
  • Current diagnostic methods for limb ischemia vary in reliability and reproducibility.

Purpose:

  • To evaluate Doppler ultrasonography as a simple and reliable tool for assessing ischemic limb severity.
  • To explore the potential of Near Infrared Spectroscopy (NIRS) for continuous muscle oxygenation monitoring during exercise in ASO patients.
  • To define critical ankle brachial index (ABI) thresholds for endangered limbs and predict intermittent claudication severity.

Summary:

  • Doppler ultrasonography provides a simple, reliable, and reproducible method for assessing ischemic limb severity, with a critical ankle brachial index around 0.3 indicating danger.
  • Doppler studies can predict muscle ischemia after exercise based on resting state measurements, aiding in the evaluation of intermittent claudication.
  • Near Infrared Spectroscopy (NIRS) offers a novel, direct, and continuous method for monitoring oxygenated and deoxygenated hemoglobin in ischemic calf muscles during exercise, assessing muscle ischemia in ASO patients.

Impact:

  • Establishes Doppler ultrasonography as a gold standard for non-invasive limb ischemia assessment.
  • Introduces NIRS as a promising new modality for objective, exercise-based evaluation of muscle ischemia in ASO.
  • Highlights the need for objective, reproducible, and standardized diagnostic techniques applicable during and after exercise.

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