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Early post-infarction angina: usefulness of dipyridamole-echocardiography test

E Picano, F Lattanzi, M Masini

    European Heart Journal
    |December 1, 1986
    PubMed

    Insights

    Dipyridamole-echocardiography testing (DET) effectively identifies ischemia in post-infarction angina patients. This safe diagnostic tool helps localize ischemia and assess coronary lesion significance.

    Area of Science:

    • Cardiology
    • Diagnostic Imaging
    • Nuclear Cardiology

    Background:

    • Early post-infarction angina presents a diagnostic challenge in assessing coronary artery disease.
    • Accurate localization of ischemic regions is crucial for guiding therapeutic decisions.

    Purpose of the Study:

    • To evaluate the diagnostic utility of dipyridamole-echocardiography test (DET) in patients with early post-infarction angina.
    • To assess the safety and feasibility of DET in this patient cohort.

    Main Methods:

    • Thirty-nine patients with early post-infarction angina underwent dipyridamole-echocardiography testing.
    • DET involved continuous 2-D echocardiography monitoring during dipyridamole infusion.
    • Analysis focused on identifying patterns of new or worsening myocardial asynergy.

    Main Results:

    • The dipyridamole-echocardiography test demonstrated a sensitivity of 74% in detecting ischemia.
    • Two distinct patterns of positive DET were observed: worsening of baseline asynergy (Type 1) and new asynergy (Type 2).
    • Type 1 positivity correlated with single-vessel disease, while Type 2 positivity was associated with multivessel coronary involvement.

    Conclusions:

    • Dipyridamole-echocardiography test is a safe and feasible method for localizing ischemia relative to the infarct zone.
    • DET aids in evaluating the hemodynamic significance of coronary lesions in post-infarction angina patients.
    • The test's ability to differentiate asynergy patterns offers insights into coronary artery disease extent.

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