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[Diagnosis of coronary atherosclerosis using echocardiography with bicycle ergometry exercise]

D V Dupliakov, V M Emel'ianenko, L P Svetlakova

    Terapevticheskii Arkhiv
    |January 22, 2005
    PubMed

    Insights

    Stress echocardiography (SEC) shows high sensitivity and specificity for diagnosing coronary artery atherosclerosis, particularly in patients post-myocardial infarction. Incorporating hemodynamic parameters enhances diagnostic accuracy.

    Area of Science:

    • Cardiology
    • Diagnostic Imaging

    Background:

    • Coronary artery atherosclerosis poses a significant cardiovascular risk.
    • Accurate diagnosis is crucial for effective patient management.

    Purpose of the Study:

    • To evaluate the sensitivity and specificity of stress echocardiography (SEC) for diagnosing coronary artery (CA) stenosis.
    • To assess SEC's efficacy in patients with a history of Q-wave myocardial infarction.

    Main Methods:

    • A study involving 75 patients (70 males, 5 females; mean age 53.7 years) with coronary atherosclerosis.
    • Analysis of various stress echocardiography parameters, including impaired local contractility index (ILCI), anginal episodes, ejection fraction (EF) changes, and end-volumes.

    Main Results:

    • ILCI demonstrated high sensitivity (77.8% for univessel, 90.4% for multivessel lesions) and specificity (85.7%).
    • Other parameters showed varying sensitivities: anginal episode (65.4%), EF increment <5% (63.9%), increased end-systolic volume (61.1%), ST depression (48.1%), and increased end-diastolic volume (38.9%).
    • Three parameters achieved 100% sensitivity: impossible >5% EF rise, increased end-systolic and end-diastolic volumes, and anginal attack (85.7%).

    Conclusions:

    • SEC is a valuable tool for diagnosing coronary artery atherosclerosis.
    • Assessing hemodynamic parameters during SECG is essential for objective results and improved diagnostic specificity.
    Abstract

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