Roger D. White, M.D., from the Departments of Anesthesiology and Internal Medicine, Division of Cardiovascular Diseases and the Department of Emergency Medicine, Division of Pre-hospital Care at Mayo Clinic in Rochester, MN, discusses his article of a case of out-of-hospital cardiac arrest with 96 minutes of continued pulselessness and relentless ventricular defibrillation appearing in the June 2011 issue of Mayo Clinic Proceedings and as an Online First article.