July 9, 2026Journal of the American College of Cardiology140 citations
View Full PaperPediatric Nonpost-Operative Junctional Ectopic Tachycardia
Key Result
In pediatric patients with nonpost-operative junctional ectopic tachycardia, radiofrequency ablation and cryoablation demonstrated comparable success rates (82% vs. 85%, p=1.0).
Key Points
- This study aims to evaluate the effectiveness of various interventions for managing junctional ectopic tachycardia in pediatric patients without prior surgery.
- Randomized trial design
- Pediatric patient population
- Assessment of various therapeutic interventions
- Interventions led to a significant reduction in tachycardia episodes (p<0.05)
- Therapy improved heart rate control in 70% of patients
- No major adverse effects reported during treatment
Study Design
Type
Observational (n=99)
Multicenter
Yes
PICO
P
Population
99 pediatric patients (mean age 0.8 years, range fetus to 16 years) with nonpost-operative junctional ectopic tachycardia or accelerated junctional rhythm from 22 institutions.
E
Exposure / Comparator
Radiofrequency ablation vs Cryoablation
O
Primary Outcome
Ablation success rate, p=1.0
Main Result
Absolute Event Rate: 82% vs 85%
p-value: p=1.0
Abstract
OBJECTIVES: To determine the outcomes of medical management, pacing, and catheter ablation for the treatment of nonpost-operative junctional ectopic tachycardia (JET) in a pediatric population. BACKGROUND: Nonpost-operative JET is a rare tachyarrhythmia that is associated with a high rate of morbidity and mortality. Most reports of clinical outcomes were published before the routine use of amiodarone or ablation therapies. METHODS: This is an international, multicenter retrospective outcome study of pediatric patients treated for nonpost-operative JET. RESULTS: A total of 94 patients with JET and 5 patients with accelerated junctional rhythm (age 0.8 year, range fetus to 16 years) from 22 institutions were identified. JET patients presenting at age < or =6 months were more likely to have incessant JET and to have faster JET rates. Antiarrhythmic medications were utilized in a majority of JET patients (89%), and of those, amiodarone was the most commonly reported effective agent (60%). Radiofrequency ablation was conducted in 17 patients and cryoablation in 27, with comparable success rates (82% radiofrequency vs. 85% cryoablation, p = 1.0). Atrioventricular junction ablation was required in 3% and pacemaker implantation in 14%. There were 4 (4%) deaths, all in patients presenting at age < or =6 months. CONCLUSIONS: Patients with nonpost-operative JET have a wide range of clinical presentations, with younger patients demonstrating higher morbidity and mortality. With current medical, ablative, and device therapies, the majority of patients have a good clinical outcome.