Key result
Two-catheter pediatric SVT ablation yields ~1% recurrence at 12 months without complications.
Why the study?
Catheter ablations for SVT in pediatric patients typically have high success and low complication rates, but outcomes using a simplified two-catheter approach were not well characterized.
Does a two-catheter approach for SVT ablation provide safe and effective outcomes in pediatric patients?
Observational (n=150)
No
Does a two-catheter approach for SVT ablation provide safe and effective outcomes in pediatric patients?
A simplified two-catheter approach for SVT ablation in pediatric patients is highly effective and safe, yielding a 98.7% overall success rate at 1 year without complications.
Answers are grounded in this paper and cite their sources.
Supports feasibility of simplified two-catheter ablation for pediatric SVT; hypothesis-generating and warrants prospective multicenter validation.
BACKGROUND: Catheter ablations are an established treatment for supraventricular tachycardia (SVT) in pediatric patients with high success and low complication rates typically. This study evaluated the procedural outcomes, safety, and recurrence rates of pediatric patients undergoing SVT ablation using a two-catheter approach. METHODS: A retrospective review was performed of 150 pediatric patients who underwent electrophysiology studies and catheter ablation for SVT. All patients were younger than 21 years, with arrhythmia mechanisms including atrioventricular nodal reentrant tachycardia (AVNRT), ectopic atrial tachycardia (EAT), atrial flutter, and other accessory pathway-mediated tachycardias. All electrophysiology (EP) studies and catheter ablations were performed using a two-catheter access approach at the University of California at Davis by a sole operator with typically just a catheter in the coronary sinus and a second linear catheter (right atrial/ ventricular/ His) to start. All patients had follow-up of one year or if recurrence than 1 year from subsequent ablation. RESULTS: Acute procedural success was achieved in all patients. The median age at the time of ablation was 13 years (IQR: 8-16 years). The median weight and height were 53.9 kg (IQR: 34.6-67.6 kg) and 157.3 cm (IQR: 137-170 cm), respectively. No intraprocedural complications were observed, including vascular access complications. Additionally, no postprocedural complications occurred, including pericardial effusion, cardiac tamponade, air embolism, thrombus formation, or heart block. Two patients experienced arrhythmia recurrence within 12 months of follow-up, corresponding to a recurrence rate of 1.3% and an overall success rate of 98.7%. Recurrence occurred in one patient with a Mahaim pathway and one patient with a left posterolateral accessory pathway. CONCLUSION: A two-catheter access approach may be safely performed with good short-and medium-term outcomes in pediatric patients.
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Cervantes et al. (2026) conducted an observational in Supraventricular tachycardia (SVT) (n=150). Two-catheter approach for SVT ablation was evaluated on Arrhythmia recurrence within 12 months. A two-catheter approach for SVT ablation in pediatric patients achieved 100% acute procedural success, no complications, and a 1.3% recurrence rate at 12 months.
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