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Graphs of left atrial bipolar voltage recorded during atrial fibrillation (AF, left panel) and during sinus rhythm (SR, right panel) at the high dominant frequency (DF) and non-high DF sites. Note that the high DF sites showed lower voltage during AF than the complex fractionated atrial electrogram (–) sites; however, there was no difference in the SR voltage between the high DF and non-high DF sites.
