Abstract

A 33-year-old male, s/p Rastelli procedure at the age of 9 y/o for double outlet right ventricle (DORV) was admitted to our hospital due to ventricular tachycardia (VT). The morphology of clinical VT was LBBB, superior axis (CL 410 ms). During the EP study, 2 types of VTs including the clinical VT were induced. VT2 had LBBB with inferior axis (CL 440 ms). Activation mapping was performed both in VT1 and VT2, early-diastolic potential during VT1 and mid-diastolic potential during VT2 were recorded at the same channel in LVOT.

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