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Sinus node dysfunction in children.

W J Lee¹, M H Wu, M L Young

¹Department of Pediatrics, Provincial Tao-Yuan General Hospital, Taiwan, R.O.C.

Zhonghua Minguo Xiao Er Ke Yi Xue Hui Za Zhi [Journal]. Zhonghua Minguo Xiao Er Ke Yi Xue Hui

|May 1, 1992

Summary

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Sinus node dysfunction (SND) is rare in pediatric cardiac patients, affecting 0.84%. Thorough investigation is recommended for these patients due to potential conduction system diseases.

Area of Science:

Pediatric Cardiology
Electrophysiology
Cardiac Electrophysiology

Background:

Sinus node dysfunction (SND) is a critical condition affecting heart rhythm.
The prevalence and characteristics of SND in pediatric cardiac patients are not well-defined.

Purpose of the Study:

To determine the incidence of SND in pediatric cardiac patients.
To characterize the clinical presentation, electrophysiologic findings, and outcomes of pediatric patients with SND.

Main Methods:

Retrospective review of pediatric cardiac patients over seven years.
Analysis of clinical data, electrocardiograms, electrophysiologic studies, and exercise tests.
Evaluation of treatment strategies and patient outcomes.

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Main Results:

Seven out of 829 pediatric cardiac patients (0.84%) were diagnosed with SND.
Onset ranged from 4 months to 8 years, with symptoms including syncope and bradycardia.
Electrophysiologic studies revealed prolonged sinus node recovery time and conduction abnormalities in all patients.

Conclusions:

SND is uncommon in pediatric cardiac patients but associated with significant conduction system disease.
Thorough investigation, including electrophysiologic studies, is crucial for managing pediatric SND.
While anti-arrhythmic drugs were used, pacemaker implantation was necessary for two patients.