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Related Experiment Videos

Digitalis cardiotoxicity.

C Fisch, S B Knoebel

    Journal of the American College of Cardiology
    |May 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Digitalis toxicity, a historical concern, has seen its prevalence decline due to improved understanding of drug interactions and therapeutic drug monitoring. This review focuses on specific digitalis-induced arrhythmias, some now rarely seen.

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    Area of Science:

    • Cardiology
    • Clinical Pharmacology

    Background:

    • Digitalis toxicity has been recognized since 1785, with electrocardiographic documentation beginning in the late 19th century.
    • The prevalence of digitalis toxicity increased with the popularization of electrocardiography and the use of digitoxin in high doses.
    • Decreased toxicity correlates with better understanding of electrolyte interactions and appropriate digoxin dosing for arrhythmias.

    Observation:

    • Early electrocardiographs allowed for the recording of digitalis-induced arrhythmias.
    • Increased use of digoxin at doses optimized for inotropic effects, rather than arrhythmia management, contributed to a decline in toxicity.
    • Serum level determinations and the concept of therapeutic drug levels have helped prevent digitalis toxicity.

    Findings:

    • This report details arrhythmias highly specific to digitalis toxicity.

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  • It also discusses arrhythmias that were once common but are now rarely observed.
  • Arrhythmias are classified based on their likely electrophysiologic mechanisms.

    • Implications:

    • Understanding these specific arrhythmias aids in diagnosing digitalis toxicity.
    • Recognizing less common arrhythmias is crucial for managing complex patient cases.
    • This review provides insights into the evolving landscape of digitalis toxicity and its management.