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[Arrhythmic cardiomyopathy. Case report].

Violeta Streangă1, A G Dimitriu, C Iordache

  • 1Universitatea de Medicină şi Farmacie Gr.T. Popa Iaşi, Facultatea de Medicină, Clinica I Pediatrie.

Revista Medico-Chirurgicala a Societatii De Medici Si Naturalisti Din Iasi
|April 19, 2005
PubMed
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Radiofrequency ablation successfully treated a young boy's incessant sinus node reentrant tachycardia and secondary dilated arrhythmic cardiomyopathy. A subsequent successful third ablation restored normal sinus rhythm and regressed the cardiomyopathy.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Pediatric Cardiology

Background:

  • Sinus node reentrant tachycardia and automatic atrial tachycardia can lead to secondary dilated arrhythmic cardiomyopathy in children.
  • Radiofrequency ablation is a common treatment for supraventricular tachycardias.

Observation:

  • An 11-year-old boy presented with incessant sinus node reentrant tachycardia and secondary dilated arrhythmic cardiomyopathy, successfully treated with radiofrequency ablation.
  • Two years later, the patient developed incessant automatic atrial tachycardia and worsening arrhythmic cardiomyopathy, requiring repeat ablation procedures.

Findings:

  • The initial radiofrequency ablation for sinus node reentrant tachycardia was successful.
  • A second catheter ablation for automatic atrial tachycardia failed to resolve the arrhythmia and cardiomyopathy.

Related Experiment Videos

  • A third, distinct catheter ablation four months later successfully eliminated the automatic atrial tachycardia, restoring normal sinus rhythm and achieving complete regression of the arrhythmic cardiomyopathy.

    • Implications:

    • This case highlights the potential for recurrent or new atrial tachycardias following initial ablation in pediatric patients.
    • Multiple catheter ablation procedures may be necessary to achieve long-term rhythm control and reverse cardiomyopathy in complex cases.
    • Successful ablation can lead to significant improvement and potential resolution of secondary arrhythmic cardiomyopathy in pediatric patients.