Figure 1. Regular wide complex tachycardia at 180 bpm, with a relatively narrow QRS duration of 120 bpm. The RBBB pattern with left axis deviation is typical for a fascicular VT originating from the LV septum.
Figure 3. 3D electroanatomic voltage map of the endocardial surface of the left ventricle, posterior view. Discrete posterior wall scar (bipolar, < 0.5 mV; region of red) extends from the base to mid ventricle.
Figure 4. 3D electroanatomic map of the left ventricular septum, RAO caudal view. The sites of Purkinje potentials are marked (light purple dots) and outline the course of the branches of the left posterior fascicle.