Fig. 2From: Permanent left bundle branch area pacing utilizing intracardiac echocardiogramFluoroscopic image of RV and His bundle potential. Left plane: fluoroscopic image of RV at the RAO 30° projection. a, the summit site of the tricuspid annulus; b, RV apex. Right plane: inter-cardiac electrocardiogram of the lead. When the lead tip was at the summit site, the His bundle potential (arrows) was shown. RV, right ventricleBack to article page