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jce12251-sup-0001-FigureS1.tif327KSupplemental Figure 1: Case 1. Intracardiac electrograms during ventricular bigeminy. The ablation catheter (ABL) is placed just within the left main coronary artery ostium, which was found to be the earliest site of ventricular activation during PVCs and VT. Arrow points to earliest sites of activation with significant conduction delay prior to the exit to the ventricular myocardium. Spontaneous exit block is noted for the next beat. Hatched arrow points to local arterial activation with exit block.
jce12251-sup-0002-FigureS2.tif787KSupplemental Figure 2: Fluoroscopy image in left anterior oblique position showing ablation catheter in left cusp and right coronary angiogram. The right coronary cusp is delineated by dye.
jce12251-sup-0003-FigureS3.tif1185KSupplemental Figure 3: CARTO image displaying ablation lines from case 1/2/3. Red dots = ablation lesions; Yellow dots = conduction tissue and fascicular signals location; Pink dots = fragmented signals; White dot = site of best pace mapped considered as exit site.

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