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Related Experiment Videos

Alternating atrial and ventricular tachycardia.

R M Jordan, J H McAnulty, L Ritzmann

    British Heart Journal
    |June 1, 1979
    PubMed
    Summary

    This case study details alternating atrial and ventricular tachycardia in a myocardial infarction patient. Atrial tachycardia interrupted ventricular tachycardia, indicating a retrograde conduction block and highlighting the need for intra-atrial ECG for diagnosis.

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    Area of Science:

    • Cardiology
    • Electrophysiology
    • Internal Medicine

    Background:

    • Describes a patient experiencing alternating atrial and ventricular tachycardia.
    • The patient had a history of acute myocardial infarction and was undergoing digitalis treatment.

    Observation:

    • Atrial tachycardia, sometimes with aberrant ventricular conduction, could interrupt ventricular tachycardia.
    • Ventricular tachycardia could not interrupt atrial tachycardia, suggesting a retrograde conduction block.

    Findings:

    • Demonstrates the phenomenon of alternating atrial and ventricular arrhythmias.
    • Aberrant ventricular conduction in tachycardia can mimic ventricular tachycardia.

    Implications:

    • Highlights the diagnostic challenge posed by alternating tachycardias.
    • Suggests intra-atrial electrocardiography may be essential for accurate diagnosis in such cases.
    • Emphasizes the importance of differentiating supraventricular tachycardia with aberrant conduction from true ventricular tachycardia.

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