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Figure 6 The vein of Marshall (VOM) activations during sinus rhythm and during atrial fibrillation (AF) are shown. Panel A depicts an actual electrogram from site e in panel C during AF. A and M indicate atrial and VOM activations, respectively. Panel B shows actual activations during one beat of sinus rhythm, and the actual VOM activations recorded in activations 1, 3, 4, and 5 of panel C (local atrial electrograms were omitted). The isochronal maps of sinus rhythm and seven consecutive VOM activations during AF are shown in panel C.
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