The elusive link between coronary lesion morphology and dobutamine stress echocardiography results. The EDIC (Echo

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Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft

Published on: September 15, 2023

J Heyman, P Salvadé, E Picano

    International Journal of Cardiac Imaging
    |November 14, 1997
    PubMed

    Insights

    Complex coronary lesion morphology does not increase ischemia risk during dobutamine stress echocardiography (DASE) in non-obstructive single-vessel disease. This finding suggests plaque complexity doesn't predict adrenergic stress test outcomes.

    Area of Science:

    • Cardiology
    • Diagnostic Imaging
    • Interventional Cardiology

    Background:

    • Complex coronary lesion morphology is linked to ischemia during vasodilator stress.
    • The impact of plaque morphology on adrenergic stress tests is unknown.
    • This study investigates plaque morphology and dobutamine-atropine stress echocardiography (DASE).

    Purpose of the Study:

    • To assess the relationship between coronary plaque morphology and DASE results.
    • To determine if complex coronary lesions increase vulnerability during adrenergic stress testing.

    Main Methods:

    • Analyzed DASE and coronary angiography in 42 patients with single-vessel disease.
    • Classified lesions as simple or complex based on Ambrose criteria.
    • Compared DASE positivity, peak dobutamine dose, and wall motion score index between groups.

    Main Results:

    • No significant difference in DASE positivity between simple (72%) and complex (62%) lesion groups.
    • Similar peak dobutamine doses and Wall Motion Score Index in both groups.
    • Groups were comparable in age, stenosis severity, and prior infarction history.

    Conclusions:

    • Complex coronary plaque morphology is not associated with increased ischemia during dobutamine-induced stress.
    • Coronary lesion complexity does not predict DASE outcomes in non-obstructive single-vessel disease.
    Abstract

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