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Coronary disease progression and its effect on left ventricular function

A J Buda, I L Macdonald, K L Kwok

    Chest
    |September 1, 1982
    PubMed
    Summary
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    Coronary disease progression significantly impairs left ventricular ejection fraction, primarily due to myocardial infarction. However, the overall rate of disease progression or collateral vessel development did not predictably alter ventricular function.

    Area of Science:

    • Cardiology
    • Cardiovascular Medicine
    • Medical Imaging

    Background:

    • Assessing the impact of coronary artery disease (CAD) progression on cardiac function is crucial for patient management.
    • Left ventricular (LV) function is a key indicator of cardiac health and prognosis.

    Purpose of the Study:

    • To investigate the relationship between the progression of coronary artery disease and changes in left ventricular function.
    • To identify factors contributing to the decline in left ventricular function in patients with CAD.

    Main Methods:

    • Retrospective study of 47 patients undergoing two cardiac catheterizations.
    • Analysis of coronary artery disease progression and left ventricular ejection fraction (LVEF) changes over a mean interval of 25 months.
    • Comparison between patients with and without significant coronary artery disease.

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    Main Results:

    • Coronary disease progression occurred more frequently in patients with existing CAD (66%) compared to those without (25%).
    • Patients with progressive CAD showed a significant decrease in LVEF (0.63 to 0.51, p<0.01).
    • Myocardial infarction was the primary driver of deteriorating LV function; collateral vessel presence did not significantly alter performance.

    Conclusions:

    • Coronary disease progression, particularly when associated with myocardial infarction, leads to a decline in left ventricular function.
    • The rate or extent of coronary disease progression did not consistently predict changes in global or regional LV function.
    • Collateral vessel development did not appear to significantly mitigate the negative impact of CAD progression on ventricular performance.