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Related Experiment Videos

Sinus node dysfunction in children, adolescents, and young adults.

S M Yabek, J M Jarmakani

    Pediatrics
    |April 1, 1978
    PubMed
    Summary
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    Sinus node dysfunction (SND) affects children and young adults, often linked to heart disease or surgery. It can occur in individuals without apparent heart issues, sometimes causing syncope requiring pacemakers.

    Area of Science:

    • Pediatric Cardiology
    • Electrophysiology

    Background:

    • Sinus node dysfunction (SND) is a critical condition affecting heart rhythm in pediatric patients.
    • Understanding the prevalence and causes of SND in young individuals is essential for timely diagnosis and management.

    Observation:

    • The study describes 30 children and young adults (3 days to 25 years) with electrocardiographic and clinical evidence of SND.
    • Specific SND types observed include inappropriate sinus bradycardia (10 patients), sinus arrest (16 patients), and sinoatrial exit block (9 patients).
    • SND was associated with significant heart disease in 22 patients, developing post-cardiac surgery in 13, while 8 had no apparent heart disease.

    Findings:

    • Seven patients (23%) were symptomatic, experiencing syncope (3) or near-syncope (4).
    • Three patients with syncope required permanent demand pacemakers.

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  • SND is most common in children with congenital heart disease, especially after corrective surgery, but can also affect healthy individuals.

    • Implications:

    • Early recognition of SND in pediatric patients is crucial, particularly those with congenital heart disease or post-cardiac surgery.
    • The findings highlight the need for vigilant monitoring for SND in at-risk pediatric populations.
    • SND can manifest in individuals without underlying heart conditions, underscoring the importance of comprehensive cardiac evaluation.