Letter by Berruezo et al Regarding Article, “Impact of Local Ablation on Interconnected Channels Within Ventricular Scar: Mechanistic Implications for Substrate Modification”

We have read with interest the article of Tung et al.1 The authors conclude that substrate ablation by targeting relatively earlier late potentials can eliminate remote areas of slow conduction. We agree with this affirmation. However, the authors also claim that this is the first demonstration of the merits of substrate ablation by targeting the conducting channel entrance into the scar. We are compelled to point out that this is not the case.Two years ago, on December …