Fig. 10.
Pace mapping of PVC in a patient with CPVT [43]. (A) A perfect pace map of the second beat of the CPVT was obtained on the left ventricular septum. Purkinje potential at that point was recorded during the PVC and sinus rhythm. (B) A perfect pace map of the first beat of a PVC was obtained at the left coronary cusp. A discrete pre-potential was recorded during the PVC, and a delayed potential was recorded during sinus rhythm.