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Example of 23-year-old man carrying a PKP2 mutation with exercise-induced ventricular tachycardia from right ventricular outflow tract. The endocardial bipolar voltage map (0.5–1.5 mV) during sinus rhythm showed no significant area of scar, contrary to the unipolar voltage map (3.5–5.5 mV), which predicted areas of scar observed in the epicardium.
