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Cardiac channelopathies in pediatric patients - 7-years single center experience

V Illikova1, P Hlivak1, R Hatala1

  • 1Departments of Arrhythmias and Pacing and ICU, Children's Cardiac Center, Comenius University School of Medicine and National Cardiovascular Institute, Slovak Medical University School of Medicine, Bratislava, Slovakia.

Journal of Electrocardiology
|January 3, 2015
PubMed

Insights

Channelopathies in children, including Long QT syndrome and catecholaminergic polymorphic ventricular tachycardia, require early diagnosis. Clinical presentation and genetic testing guide treatment for sudden cardiac death prevention.

Area of Science:

  • Cardiology
  • Genetics
  • Pediatrics

Background:

  • Channelopathies arise from genetic mutations affecting myocardial ion channels.
  • These conditions create an arrhythmogenic substrate, increasing the risk of sudden cardiac death.
  • Focus on clinical and ECG presentation and management in Slovakian children.

Purpose of the Study:

  • To analyze the clinical and ECG presentation of channelopathies in children.
  • To evaluate the management strategies for pediatric channelopathies.
  • To highlight the role of genetic testing in diagnosis and treatment.

Main Methods:

  • Retrospective analysis of 22 children admitted with suspected channelopathy (2007-2014).
  • Genetic testing performed in 19 patients.
  • Review of clinical data, ECG findings, and treatment outcomes.

Main Results:

  • 14 out of 22 patients were symptomatic.
  • Genetic confirmation of Long QT syndrome in 8 patients and catecholaminergic polymorphic ventricular tachycardia in 5 patients.
  • Treatment involved beta-blockers (20 patients), with additions of mexiletine or flecainide (5 patients); 9 received implantable cardiac defibrillators.

Conclusions:

  • Integrated approach using clinical presentation and genetic testing is crucial for diagnosing and managing pediatric channelopathies.
  • Early diagnosis facilitates timely and appropriate treatment and lifestyle adjustments.
  • Effective management can mitigate risks associated with channelopathies, including sudden cardiac death.
Abstract

Keywords:
ChannelopathyChildrenGenetic testing

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