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Symptomatic sinus node dysfunction in children without structural heart disease

S M Yabek, T Dillon, W Berman

    Pediatrics
    |May 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

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    Symptomatic sinus node dysfunction is rare in children with healthy hearts. This study highlights three cases of unexplained syncope and bradycardia in children, emphasizing the need for considering sinus node dysfunction in pediatric diagnoses.

    Area of Science:

    • Pediatric Cardiology
    • Electrophysiology
    • Cardiac Electrophysiology

    Background:

    • Sinus node dysfunction (SND) is uncommon in children with structurally normal hearts.
    • Unexplained syncope and bradycardia in pediatric patients warrant thorough cardiac evaluation.

    Observation:

    • Three pediatric cases of symptomatic sinus node dysfunction presenting with syncope and bradycardia are detailed.
    • Both noninvasive and invasive cardiac testing confirmed isolated sinus node dysfunction.
    • Cardiac anatomy was structurally normal in all affected children.

    Findings:

    • Electrophysiologic studies revealed significant abnormalities in sinus node automaticity and sinoatrial conduction.
    • All three children received permanent ventricular pacemakers for treatment.

    Related Experiment Videos

  • Post-pacemaker implantation, all patients remained asymptomatic.

    • Implications:

    • Sinus node dysfunction should be a key consideration in the differential diagnosis of pediatric syncope and dizziness.
    • Early diagnosis and appropriate management, such as pacemaker implantation, can effectively resolve symptoms.
    • This study underscores the importance of comprehensive electrophysiologic assessment in children with unexplained bradyarrhythmias.