Successful cryoablation for typical atrial flutter in a toddler with sinus node dysfunction: the youngest case report
Abstract
Background: We describe the youngest (2.8 years, 9 kg) successful cavotricuspid isthmus (CTI) cryoablation whose medical management was complicated with severe sinus node dysfunction and recurrent atrial flutter despite medical therapy (sotalol). Case summary: mapping system. Cavotricuspid isthmus proved to be 'in' circuit with entrainment. Point-by-point 2 min cryolesions resulted in termination of atrial flutter, and later bidirectional block (>120 ms) was confirmed. There was no recurrence post-ablation (>1.5-year follow-up). Conclusion: Ablation offers a less invasive approach (vs. pacemaker implantation) to toddlers with tachyarrhythmia and coexisting conduction disease, limiting medical management option.
Fields of Study & Subjects
Cardiac Arrhythmias and Treatments
Atrial Fibrillation Management and Outcomes
Cardiac electrophysiology and arrhythmias
Publication details
- Journal / source
- European Heart Journal - Case Reports
- Volume
- 10
- Issue
- 2
- Pages
- ytag023–ytag023
- Publication date
- 26 January 2026
- Language
- EN