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[Evaluation of the heart conduction system in patients with ventricular allorhythmia]

V F Antiuf'ev, M V Arkhipov, V P Fedorchenko

    Kardiologiia
    |July 1, 1987
    PubMed

    Insights

    Ventricular allorhythmias often indicate underlying sinus node dysfunction and atrioventricular conduction issues. Caution is advised when using anti-arrhythmic drugs with negative chrono- and dromotropic effects in these patients.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Cardiac Electrophysiology

    Context:

    • Intracardiac electrophysiologic studies were performed in 51 patients.
    • Focus on patients diagnosed with ventricular allorhythmias.

    Purpose:

    • To investigate the relationship between ventricular allorhythmias and the sinus node and cardiac conductive system.
    • To assess the prevalence of sinus node and atrioventricular conduction abnormalities in patients with ventricular allorhythmias.

    Summary:

    • Electrophysiologic studies revealed that 50% of patients with ventricular allorhythmias had impaired sinus node function.
    • Abnormal atrioventricular impulse conduction was also observed in a significant portion of these patients.
    • Findings suggest a link between ventricular allorhythmias and underlying electrical conduction system defects.

    Impact:

    • Highlights the importance of comprehensive electrophysiologic evaluation in patients with ventricular allorhythmias.
    • Suggests a need for careful consideration of drug effects on heart rate (chrono-tropic) and conduction (dromo-tropic) when prescribing anti-arrhythmic medications.
    • Informs clinical practice regarding the management of arrhythmias and potential drug-induced complications.

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