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Figure 8 Left atrial horizontal position: gross lesions with charring and fluoroscopic image. This linear and contiguous encircling subpulmonary lesion was created with radiofrequency power titration of up to 20 W with no temperature control. Char was formed near the periphery of the electrode–tissue contact areas. The lesions are bridged with desiccated, blushed tissues between most of the individual burns. Abbreviations as in Figure 7.