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Diagnostics of main coronary artery stenoses and occlusions: multiplane transoesophageal Doppler echocardiographic

A V Vrublevsky1, A A Boshchenko, R S Karpov

  • 1Cardiology Research Institute, Tomsk, Russian Academy of Medical Sciences, Siberian Branch, Russia. alexvr@mail.tomsknet.ru

European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology
|March 8, 2002
PubMed

Insights

Transoesophageal echocardiography (TEE) accurately diagnoses coronary artery stenosis using Doppler flow. This non-invasive method correlates well with quantitative coronary angiography, offering a reliable alternative for assessing coronary artery disease.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Vascular Ultrasound

Background:

  • Coronary artery disease (CAD) affects millions globally, necessitating accurate diagnostic tools.
  • Stenotic atherosclerosis of coronary arteries poses a significant risk for cardiovascular events.
  • Current diagnostic methods may be invasive or have limitations.

Purpose of the Study:

  • To compare the diagnostic capabilities of multiplane transoesophageal echocardiography (TEE) and quantitative coronary angiography (QCA).
  • To evaluate the accuracy of TEE in detecting stenotic and occlusive atherosclerosis in major coronary arteries.
  • To establish Doppler echocardiography criteria for diagnosing coronary artery stenoses and occlusions.

Main Methods:

  • Study included 94 patients with diagnosed coronary artery disease.
  • Multiplane transoesophageal echocardiography (TEE) was employed for imaging.
  • Quantitative coronary angiography (QCA) served as a reference standard.
  • A modified continuity equation was used for stenosis calculation: stenosis (%) = 100 x (1 - prestenotic VTI(d)/stenotic VTI(d)).

Main Results:

  • TEE demonstrated high sensitivity and specificity for diagnosing coronary artery atherosclerosis.
  • Correlation between TEE and QCA results was high for all major coronary arteries (LMCA, LDA, CX, RCA; r=0.82-0.85, P<0.001).
  • Doppler echocardiography criteria were developed for hemodynamically significant stenoses (>50%) and occlusions.

Conclusions:

  • Transoesophageal Doppler evaluation of coronary blood flow is an accurate, non-invasive method for diagnosing coronary artery stenoses.
  • TEE offers a reliable alternative to more invasive diagnostic procedures for CAD.
  • The modified continuity equation provides a quantitative measure of stenosis severity.
Abstract

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