Sinus Node Dysfunction in Children, Adolescents, and Young Adults

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Abstract
Thirty children and young adults with ECG and clinical evidence of sinus node dysfunction (SND) are described. Ages ranged from 3 days to 25 yr. Of these, 10 patients had inappropriate sinus bradycardia, 16 had periods of sinus arrest and 9 had sinoatrial exit block. A total of 22 patients had significant heart disease and SND developed in 13 after cardiac surgery. Eight patients with SND had no obvious heart disease. Seven patients were symptomatic, having either syncopal (3) or near-syncopal episodes (4). The 3 with syncope have received permanent demand pacemakers. Although significant SND occurs most frequently in children with congenital heart disease, particularly following corrective cardiac surgery, it may occur in otherwise normal individuals.

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