This week we delve into the world of electrophysiology and review a recent report from the team at Primary Children’s hospital on the use of intravascular ultrasound for EP ablation procedures in children. How is this technology useful for ‘routine’ ablations in kids? Are there some forms of tachycardia where its use is more important than others? How does it lower procedural time or improve efficacy? We speak with Dr. Thomas Pilcher, chief of pediatric electrophysiology at Primary Children’s about his center's recent report in the use of this technology for ablation in children and those with congenital heart disease. https://doi.org/10.1093/europace/euae047