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Figure 2 The 12-lead electrocardiogram (ECG) showing the difference between the right leads (V1 to V2) and the left leads (V5 to V6). (A) The ECG. (B) Detail of V2 and V6 demonstrating a 70-ms wider right-sided QRS compared with the left-sided one. (C) An ECG record of the patient during ventricular tachycardia (VT). The VT is left bundle branch block QRS configuration with 250-ms cycle length, originating in the right ventricular midseptal area.
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