Siebels H, et al. - Researchers evaluated the procedural safety, efficacy, and impact on long-term outcome in children and adolescents (aged < 19 years) who underwent radiofrequency current energy (RFC) catheter ablation for the treatment of atrioventricular nodal reentrant tachycardia (AVNRT). Special emphasis was laid on modulation vs ablation of the AV nodal slow pathway (SP). They found that it was safe to perform RFC-guided ablation for AVNRT in children and adolescents and this treatment modality provided an acceptable long-term freedom from recurrences. Comparable acute and long-term success rates were offered by SP modulation and SP ablation. Even after years of freedom from tachycardia-related symptoms, the occurrence of late AVNRT recurrences could be reported.