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Related Experiment Videos

Electrical alternation.

A G Arcebal, L Lemberg

    Heart & Lung : the Journal of Critical Care
    |July 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    ST segment alternans, a rare finding, is observed in 30% of Prinzmetal

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    Area of Science:

    • Cardiology
    • Electrophysiology

    Background:

    • ST segment alternans is an infrequent electrocardiographic phenomenon.
    • Prinzmetal's angina is characterized by coronary artery vasospasm.

    Observation:

    • ST segment alternans is observed in 30% of patients diagnosed with Prinzmetal's angina.
    • This association is particularly noted when ST segment elevation is significant.

    Findings:

    • Ventricular arrhythmias frequently occur in the presence of ST segment alternans.
    • The concurrence of ST segment alternans and Prinzmetal's angina suggests a link between myocardial ischemia and arrhythmogenesis.

    Implications:

    • Understanding this association may improve risk stratification in patients with Prinzmetal's angina.
    • Further research into the mechanisms underlying ST segment alternans in vasospastic angina is warranted.