FIGURE LEGENDS:
Fig.1 represents surface electrogram (I, II, III, aVR, aVL, aVF, V1-V6)
and intracardiac electrograms(His d, His p, CS 9,10, CS7,8, CS5,6,
CS3,4, CS1,2 and RV catheter at distal RVOT septum RVd, RV p) showing
the response of long RP tachycardia to His refractory VPC and
spontaneous catheter induced VPB.