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Figure 1 (A) Kaplan-Meier curve for arrhythmic events in patients with a negative electrophysiological test versus patients with a positive electrophysiological test plus internal cardioverter-defibrillator (ICD) implantation. (B) Kaplan-Meier survivorship curve for cardiac mortality (combined sudden and nonsudden) in the group that underwent electrophysiological testing plus ICD implantation versus the group of patients not tested electrophysiologically (no-consent group). PVS = programmed ventricular stimulation.