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[Changes in left ventricular function induced by isometric exercise in coronary disease].

S De Servi, G Spécchia, D Ardissino

    Archives Des Maladies Du Coeur Et Des Vaisseaux
    |April 1, 1980
    PubMed
    Summary
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    Isometric exercise can impair left ventricular function in chronic coronary heart disease patients. Pathological elevation of left ventricular end-diastolic pressure (LVEDP) during exercise indicates reduced ejection fraction and abnormal relaxation.

    Area of Science:

    • Cardiology
    • Exercise Physiology

    Context:

    • Chronic coronary heart disease (CHD) poses significant challenges to cardiovascular health.
    • Isometric exercise is a common physical activity with potential hemodynamic implications.

    Purpose:

    • To investigate the effects of isometric exercise on left ventricular (LV) function in patients with CHD.
    • To identify hemodynamic markers indicative of impaired LV function during isometric exertion.

    Summary:

    • Sixteen CHD patients underwent isometric exercise testing, with LV pressures and volumes monitored.
    • Patients with elevated left ventricular end-diastolic pressure (LVEDP) during exercise showed decreased ejection fraction, abnormal relaxation, and altered diastolic filling patterns.
    • No significant changes were observed in patients without LVEDP elevation.

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    Impact:

    • Pathological LVEDP elevation during isometric exercise is a key indicator of compromised LV function in CHD.
    • Findings highlight the importance of LVEDP as a hemodynamic index for assessing LV behavior during isometric stress.
    • This research contributes to understanding exercise limitations and guiding patient management in chronic coronary heart disease.