This week we review a recent report from the team at Boston Children's Hospital about a novel approach to avoid heart block during complex congenital heart surgery? Assistant Professor of Pediatrics at Harvard Medical School Elizabeth DeWitt shares with us her insights into a recent report she co-authored by the departments of surgery and cardiology at her institution about intraoperative mapping of conduction. How easy is it to identify the conduction system and how effective at avoiding heart block? Who is a good candidate for this approach? Dr. DeWitt offers her insights as does Dr. John Triedman, Chief of Electrophysiology and a co-author. Dr. Triedman also shares with us information regarding the upcoming PedirhythmX conference that will be held in Boston 9/22-9/24. DOI: 10.1016/j.xjtc.2021.11.017