Skip to main content

Catheter-based ablation of supraventricular tachycardias in a paediatric population – a decade of experience at a single centre

Accessory atrioventricular pathways (AP) and dual AV nodal physiology are common substrates for paroxysmal supraventricular tachycardias (SVT) in children and adolescents. Definitive treatment can be achieved by catheter ablation with either radiofrequency (RF) or cryoenergy. Aim of this study was to assess effectiveness and safety of RF- and cryoenergy ablation in a paediatric population.

During the last 10 years 562 EP studies have been performed in 479 children and adolescents at our institution. Median age was 12.1 yrs (range 0.4 – 19.8). Indications included patient’s preference (67.3%), drug refractory SVT (31.5%) and malignant arrhythmias (1.2%). RF was used in 75%, cryoenergy in 16 %, both energy sources in 8%. No ablation was performed in 1%. Congenital heart disease was present in 39 children (6.9%).

Substrates documented were APs in 54.6% and AVNRT in 42.6%. APs and AVNRT combined were present in 2.8%. APs were interrupted in 90.5% (RF) / 90% (cryoenergy). Dual AV nodal physiology was successfully treated in 98.5% (RF) / 100% (cryoenergy). In 70 patients, repeated EPS due to SVT relapse or recurrent preexitation pattern was necessary. In 3 patients (0.5%) pacemaker implantation due to AV-block after RF ablation was necessary (AVNRT n=2; AP n=1). Routinely performed coronary angiography showed insignificant coronary artery narrowing in 2 patients (0.3%) after RF ablation of right posteroseptal AP. In 1 case (0.2%), thrombosis of the right coronary artery occurred after intercoronary mapping with a 2F catheter. In 2 cases (0.3%), pericardial effusion was evident and required puncture after cryo- and RF- ablation, respectively. Vessel injuries at the puncture site with need for surgical intervention occurred in 6 cases (1%).

Catheter ablation of SVT in children and adolescents was safe and effective. Major complications were noted after RF-application only. Therefore, cryoenergy may be considered as energy source of choice for ablation in the rightseptal area.

Author information

Affiliations

Authors

Rights and permissions

Open Access  This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

David, B., Sophia, B., Thomas, K. et al. Catheter-based ablation of supraventricular tachycardias in a paediatric population – a decade of experience at a single centre. Mol Cell Pediatr 1, A29 (2014). https://doi.org/10.1186/2194-7791-1-S1-A29

Download citation

  • Published:

  • DOI: https://doi.org/10.1186/2194-7791-1-S1-A29

Keywords

  • Congenital Heart Disease
  • Catheter Ablation
  • Pericardial Effusion
  • Supraventricular Tachycardia
  • Pacemaker Implantation