Junctional ectopic tachycardia in six paediatric patients

Area of Science:

• Pediatric Cardiology
• Electrophysiology

Background:

• Junctional ectopic tachycardia (JET) is a rare but serious arrhythmia in children.
• Early diagnosis and effective management are crucial for improving outcomes and preventing complications like cardiomyopathy.

Purpose of the Study:

• To evaluate the clinical presentation and treatment responses in a cohort of six pediatric patients with JET.
• To assess the efficacy of various therapeutic strategies, including antiarrhythmic drugs and interventional procedures.

Main Methods:

• Retrospective case series analysis of six children diagnosed with JET.
• Review of presenting symptoms, cardiac function, treatment regimens (amiodarone, digoxin, sotalol, radiofrequency ablation, pacemaker insertion), and patient outcomes.

Main Results:

• Two siblings presented with early-childhood cardiopulmonary failure; one survived with combination therapy. Four later-childhood patients developed tachycardia-induced cardiomyopathy.
• Sotalol, alone or in combination, partially reduced heart rate in four patients. Myocardial function recovery varied and depended on arrhythmia control.
• One patient underwent radiofrequency His bundle ablation and pacemaker insertion for refractory arrhythmia.

Conclusions:

• Treatment of pediatric junctional ectopic tachycardia requires individualized approaches.
• Sotalol demonstrates partial efficacy in heart rate control for JET.
• Achieving sinus rhythm was not observed in this cohort, highlighting the challenges in managing this condition.