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Figure 2 Example of a successful ablation of frequent premature ventricular complexes from the left ventricular outflow tract (LVOT). (A) Shown are both unipolar (Abl uni) and bipolar (Abl bi) electrograms from the ablation catheter positioned at the LVOT. (B and C) Radiograms obtained in the right anterior oblique (RAO 30°) (B) and left anterior oblique (LAO 60°) view (C) show the successful ablation site. The distal electrodes of the ablation catheter (ABL) are positioned in the LVOT just below the left coronary cusp of the aortic valve in the region of the aortomitral continuity. Schematic drawings present the position of the aortic valve area (AV) and the mitral annulus (MA). CS = coronary sinus; RVA = right ventricular apex.