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Figure 3 (A) In the PV-AF patients, the DF of the PV ostium was significantly higher than the DF of the LA (near the PV ostium), and the DF of the LA was significantly higher than that of the RA (posterolateral wall). The lowest DFs were located in the CS, RA, and SVC, which were far away from the highest DF and the initiating ectopy. (B) In the patients with SVC-AF, the DF was highest inside the SVC or SVC ostium, with a significant frequency gradient to the RA, LA, PV, and CS. Abbreviations as in Figure 2.
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