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Body surface distribution of T wave alternans is modulated by heart rate and ventricular activation sequence in patients with cardiomyopathy - Fig 7

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posted on 2019-04-10, 17:44 authored by Behnaz Ghoraani, Adrian M. Suszko, Raja J. Selvaraj, Anandaraja Subramanian, Sridhar Krishnan, Vijay S. Chauhan

Illustration of TWA magnitude attenuation (lower panel) associated with increasing atrioventricular pacing rate (upper panel) in a precordial lead of a representative patient. The TWA magnitude decreases by ~1.5 uV with each subsequent 10 bpm increase in rate, causing TWA magnitude to fall below clinical significance at 120 bpm. The red shaded regions indicate Valt values with a k ≥3. The dotted black line denotes the clinical TWA Valt cutpoint of 1.9 uV.