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Preventable sudden death: the "long Q-T syndrome"

E U Neel

    Journal of Adolescent Health Care : Official Publication of the Society for Adolescent Medicine
    |September 1, 1981
    PubMed
    Summary

    Long QT syndrome (LQTS) is a critical consideration for adolescent syncope. Early identification using Bazett

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    Area of Science:

    • Cardiology
    • Clinical Electrophysiology
    • Genetics

    Background:

    • Syncope in adolescents necessitates considering rare but serious conditions.
    • Long QT syndrome (LQTS) is a primary cardiac channelopathy associated with ventricular arrhythmias.

    Observation:

    • A case of cardiac arrest in an adolescent with LQTS is presented.
    • Bazett's formula is a key method for identifying patients with prolonged QTc intervals.

    Findings:

    • LQTS should be included in the differential diagnosis for adolescent syncope.
    • Prolonged QTc interval and syncope in LQTS patients correlate with high mortality from ventricular arrhythmias.

    Implications:

    • Prompt diagnosis and management of LQTS are crucial for preventing sudden cardiac death.
    • Beta-blocker therapy, such as propranolol, is indicated for patients with LQTS, syncope, and prolonged QTc intervals.
    • This case highlights the importance of recognizing LQTS in adolescents presenting with syncope.

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