JACC -- Klingenheben et al. 38 (7): 2013 Figure IG2

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Figure 2 Reproducibility of T-wave alternans (TWA) analysis. (A) TWA amplitudes (alternan voltage [V_alt]) at two repetitive drug-free baseline measurements in 12 patients. (B) Representative TWA recordings in a patient with stable TWA amplitutes (V_alt) at repetitive drug-free measurements (NS = not significant). BPM = beats per minute; HR = heart rate.