JACC -- Narayan et al. 52 (22): 1782 Figure IG7

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Figure 7 Kaplan-Meier Survival Curve Based Upon AP Amplitude Alternans

Action potential (AP) amplitude alternans (k $≥$ 1.47) prospectively predicted sustained ventricular tachycardia (VT)/ventricular fibrillation (VF) or implantable cardioverter-defibrillator (ICD) therapy (in the validation sample) on Kaplan-Meier analysis (p = 0.04). Solid line = AP amplitude alternans; dashed line = no AP amplitude alternans.