Kauppila JP, et al. - Researchers here sought to assess the association of initial recorded rhythm and underlying cardiac disease in sudden cardiac arrest. At the time of sudden cardiac arrest (SCA) in non-ischemic cardiac disease, asystole (ASY) and pulseless electrical activity (PEA) were the more common presenting rhythm than ventricular fibrillation (VF) or ventricular tachycardia (VT). In this work, the decreasing trend of ischemic heart disease as a cause of SCA could partly explain the increasing trend of ASY/PEA.