Figure 6From: Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients Differences in (A) rS pattern in lead V1, (B) QS pattern inlead V1, and (C) precordial R-wave transition occurring by lead V3 between PVCs/IVTs originating from the septal portion of the tricuspid annulus (Septal origin) and those originating from the free-wall portion of tricuspid annulus (FW origin). Back to article page