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Sinus node dysfunction in a healthy pediatric population.

C Roifman, L Dembo, E Grenadier

    Israel Journal of Medical Sciences
    |June 1, 1984
    PubMed
    Summary
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    Sinus node dysfunction, including sinus arrest and sinoatrial exit block, was identified in 12 healthy children. These asymptomatic children showed no changes over a 2-year follow-up, suggesting a benign condition in this pediatric cohort.

    Area of Science:

    • Pediatric Cardiology
    • Electrophysiology
    • Clinical Research

    Background:

    • Sinus node dysfunction (SND) is a spectrum of cardiac arrhythmias originating in the sinoatrial node.
    • While common in adults, SND in asymptomatic children is less understood.
    • Evaluating prevalence and characteristics of SND in healthy pediatric populations is crucial.

    Purpose of the Study:

    • To investigate the prevalence and clinical presentation of sinus node dysfunction in healthy children.
    • To identify potential etiological factors and anatomical abnormalities associated with pediatric SND.
    • To assess the long-term clinical course and ECG findings in affected children.

    Main Methods:

    • Analysis of electrocardiogram (ECG) recordings from 624 healthy children aged 6-12 years.

    Related Experiment Videos

  • Detailed assessment of 12 children diagnosed with SND, including etiological and anatomical evaluations.
  • 24-hour Holter monitoring to capture cardiac rhythm variations.
  • 2-year follow-up for reassessment of symptomatology, ECG, and physical findings.

    • Main Results:

    • Sinus node dysfunction was detected in 12 out of 624 healthy children (1.9%).
    • Sinus arrest was the most frequent finding (10/12), followed by second-degree sinoatrial exit block (Mobitz type I in 4, Mobitz type II in 3).
    • Two children had holosystolic mitral valve prolapse, within normal population frequency. All children remained asymptomatic with normal physical examinations and showed no changes after 2 years.

    Conclusions:

    • Sinus node dysfunction, particularly sinus arrest, can occur in asymptomatic healthy children.
    • The condition appears to be benign in this cohort, with no progression or adverse events observed over a 2-year follow-up.
    • Further research may be warranted to understand the long-term implications and specific triggers of SND in pediatric populations.