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Related Experiment Videos

Cardiac arrhythmias--update 1987.

P J Schmidt, M D Ezri, P Denes

    Disease-A-Month : DM
    |July 1, 1987
    PubMed
    Summary

    Cardiac arrhythmias stem from impulse generation or conduction issues, influenced by the nervous system. Diagnosis uses noninvasive and invasive tests, with treatment tailored to the specific arrhythmia and underlying heart conditions.

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    Area of Science:

    • Cardiology
    • Electrophysiology

    Background:

    • Cardiac arrhythmias arise from abnormal impulse initiation, conduction (e.g., reentry), or both.
    • The autonomic nervous system significantly influences the development of cardiac arrhythmias.
    • Arrhythmias can occur with or without underlying heart disease.

    Purpose of the Study:

    • To outline the mechanisms, diagnosis, and treatment of clinical cardiac arrhythmias.
    • To categorize arrhythmias and associated clinical syndromes.
    • To emphasize the role of underlying heart disease in treatment selection.

    Main Methods:

    • Noninvasive testing: ECG, ambulatory monitoring, exercise testing, signal averaging.
    • Invasive testing: Intracardiac electrophysiologic studies, catheter mapping.
    • Treatment modalities: Antiarrhythmic drugs, pacemakers, defibrillators, surgery.

    Main Results:

    • Arrhythmias are classified as bradyarrhythmias or tachyarrhythmias (supraventricular/ventricular).
    • Specific syndromes link to arrhythmias: preexcitation, long QT, sick sinus, and tachycardia-bradycardia.
    • ECG and electrophysiologic studies define specific arrhythmias and their mechanisms.

    Conclusions:

    • Treatment strategies for cardiac arrhythmias depend on the specific diagnosis, mechanism, and presence of organic heart disease.
    • Comprehensive evaluation involving various diagnostic tools is crucial for effective management.
    • Tailoring therapy, including drugs, pacing, or surgery, is essential for optimal patient outcomes.

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