Comparability of Noninvasive Microvolt T-Wave Alternans Versus Invasive Ventricular Programmed Stimulation to Guide Implantable Cardioverter-Defibrillator Implantation in Patients at Risk of Sudden Death

In this issue of the Journal, Costantini et al. (1) publish a study comparing noninvasive microvolt T-wave alternans (MTWA) with invasive electrophysiological study with ventricular programmed stimulation (EPS) to identify patients at risk of sudden cardiac death (SCD) who might benefit from an implantable cardioverter-defibrillator (ICD).