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English⧼Colon⧽ F2: Intracardiac mapping for monomorphic PVCs of RVOT origin. A: a deflectable ablation catheter and a 20-pole variable circular mapping catheter were placed at RVOT using long guiding sheathes. The circular mapping catheter with 25 mm diameter was positioned at 1 cm below pulmonary valve. The tip of ablation catheter was positioned at anterolateral wall of RVOT 2 cm below pulmonary valve, where the earliest ventricular activation signal was recorded during activation mapping for spontaneous PVCs. B: ECG before radiofrequency catheter ablation showed fragmented QRS complex with T wave inversion in V1. C: however, the fragmentation of QRS complex and T wave inversion disappeared after successful ablation. PVC: premature ventricular complex, RVOT: right ventricular outflow tract, ABL: ablation catheter, LAO: left anterior oblique view, ECG: eletrocardiogram.