Catheter Ablation of Supraventricular Tachycardia in Children Using Three-Dimensional Electroanatomic Mapping Systems; A Single Center Experience

Abstract

Abstract Background Supraventricular tachycardia is the most frequently seen tachycardia in children and catheter ablation of the tachycardia substrate using 3-D mapping systems has evolved. The aim of this study was to present data on catheter ablation of SVT in children and adolescents.Methods Patients with supraventricular tachycardia and asymptomatic Wolff-Parkinson-White syndrome undergoing an electrophysiological study at our center between 2015 January and 2022 December were identified from our institutional database.Results At the time of the procedure, the median age was 12.8 (2.1–19.4) years, and the median body weight was 52 (13–125) kg. There were 138 total ablations with 123 (91.1%) acutely successful ablations performed in 135 individual patients. 71/135 (58.2%) patients with ablation had an accessory pathway, and 59/135 (43.7%) patients with ablation had atrioventricular nodal reentry tachycardia. Atrial ectopic tachycardia was detected in a total of 5 patients. The acute success rate of Wolff-Parkinson-White syndrome was 87% while it was found as 100% in atrioventricular nodal reentry tachycardia. There was a significant difference between patients with and without an accessory pathway in terms of final success. Permanent complete AV block was not observed. There was no statistically significant difference in terms of recurrence with the mapping systems used.Conclusions In conclusion, ablation is highly curative and safe in the first-line treatment of SVT in children. 3-D mapping systems should be preferred because of radiation risk in children, and there is no difference between two different systems in terms of success.