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Related Experiment Videos

Effect of oral disopyramide therapy on left ventricular function.

A C Greene, A S Iskandrian, A H Hakki

    Chest
    |March 1, 1983
    PubMed
    Summary

    Oral disopyramide therapy can worsen left ventricular function, especially in patients with pre-existing ejection fraction abnormalities. This cardiac effect may go unnoticed clinically, even with safe drug levels.

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    Area of Science:

    • Cardiology
    • Pharmacology

    Background:

    • The impact of disopyramide on cardiac function is debated.
    • Left ventricular function is a critical measure of heart health.

    Purpose of the Study:

    • To investigate the effects of oral disopyramide on left ventricular function.
    • To determine if disopyramide impacts ejection fraction in patients.

    Main Methods:

    • Utilized first-pass radionuclide ventriculography.
    • Employed a multicrystal gamma camera for imaging.
    • Studied 19 patients receiving disopyramide therapy or not.

    Main Results:

    • Disopyramide therapy led to a decline in left ventricular function.
    • The deterioration was observed in patients with abnormal ejection fractions.

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  • Adverse effects occurred despite maintaining safe therapeutic serum levels.

    • Conclusions:

    • Oral disopyramide can impair left ventricular function.
    • This cardiac effect is often clinically unrecognized.
    • Patient ejection fraction status is a key factor in disopyramide's cardiac impact.