Study population
A total of 183 ablation procedures in patients with SHD who underwent catheter ablation for VT by using an irrigated ablation catheter between November 2009 and December 2018 were retrospectively searched. This retrospective observational analysis evaluated VT ablation procedures in patients with SHD in whom PES was not performed at the end of the VT ablation procedure. The study was approved by Institutional Review Boards at Tokyo Metropolitan Hiroo Hospital, all patients provided written informed consent.