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Related Experiment Videos

Serial serum digoxin concentrations and quantitative electrocardiographic changes.

P Joubert, B Kroening, M Weintraub

    Clinical Pharmacology and Therapeutics
    |December 1, 1975
    PubMed
    Summary

    Serum digoxin levels correlate with electrocardiogram (ECG) changes in elderly patients with heart failure. T-wave amplitude was the most sensitive ECG marker, offering insights for digitalis glycoside monitoring.

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    Area of Science:

    • Cardiology
    • Pharmacology

    Background:

    • Digoxin is a commonly prescribed digitalis glycoside for heart failure.
    • Monitoring serum digoxin concentrations is crucial for therapeutic efficacy and toxicity.
    • Electrocardiography (ECG) provides valuable information on cardiac function.

    Purpose of the Study:

    • To investigate the correlation between serum digoxin concentrations and quantitative ECG parameters.
    • To identify specific ECG variables sensitive to digoxin levels.
    • To assess the reversibility of ECG changes upon digoxin discontinuation.

    Main Methods:

    • A 6-month study involving four elderly female patients with mild congestive cardiac failure in sinus rhythm.
    • Patients were treated with digoxin, and serum concentrations were monitored.

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  • Quantitative analysis of various ECG parameters, including T-wave amplitude, was performed.

    • Main Results:

    • Significant linear correlations were observed between serum digoxin concentrations and several quantitative ECG parameters.
    • T-wave amplitude emerged as the most significant ECG variable correlating with digoxin levels.
    • Discontinuation of digoxin led to the reversion of ECG changes to baseline values.

    Conclusions:

    • Quantitative ECG changes, particularly T-wave amplitude, are potentially useful indicators of digoxin levels.
    • These findings support the use of quantitative ECG analysis in clinical and research settings involving digitalis glycosides.
    • Non-invasive ECG monitoring may aid in optimizing digoxin therapy.