Key result
CARTO-guided RF ablation achieves ~80% early procedural success for pediatric idiopathic VA.
Why the study?
Does radiofrequency current ablation prevent arrhythmia recurrences at 24 h in children and adolescents with idiopathic ventricular arrhythmia?
Observational (n=30)
No
Does radiofrequency current ablation prevent arrhythmia recurrences at 24 h in children and adolescents with idiopathic ventricular arrhythmia?
Radiofrequency current ablation is a safe and highly effective early treatment for idiopathic ventricular arrhythmia in children, with success dependent on the presence of spontaneous arrhythmia during the procedure.
Supports procedural feasibility in pediatric idiopathic VA; leaves open need for prospective trials on durability.
BACKGROUND AND AIM: The aim of the study was to evaluate early effectiveness of radiofrequency (RF) current ablation for idiopathic ventricular arrhythmia (iVA) in children and to identify factors affecting treatment results. METHODS: Among over 600 children, 30 ablation procedures were performed for iVA. Patient age ranged from 2.0 to 17.9 years (mean 14.7 ± 3.1). We analysed arrhythmia recurrences at 24 h and the effect of patient age, arrhythmia location, type of anaesthesia, and the presence of spontaneous arrhythmia during the procedure on the treatment results. RESULTS: Sixteen (53%) children had right ventricular (RV) arrhythmia, including RV outflow tract arrhythmia in 9 of them (56%). In 14 (47%) children, arrhythmia was located in the left ventricle (LV), including LV outflow tract in 2 children, and the posterior fascicle in 4 children. The procedure was effective in 13 (81%) children in the RV arrhythmia group and in 11 (78%) children in the LV arrhythmia group, including all children with fascicular tachycardia. The only variable that affected the treatment results was the presence of spontaneous arrhythmia during the procedure (p = 0.012). No procedural complications were noted. CONCLUSIONS: RF current ablation of iVA is a safe procedure with high early effectiveness. The only variable that affected the treatment results was the presence of spontaneous arrhythmia during the procedure.
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Miszczak‐Knecht et al. (2014) conducted an observational in Idiopathic ventricular arrhythmia (n=30). Radiofrequency current ablation (CARTO system) was evaluated on Procedural success at 24 hours. Radiofrequency current ablation using the CARTO system achieved an 80% early procedural success rate at 24 hours for idiopathic ventricular arrhythmia in children and adolescents.
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