JACC -- Badhwar et al. 0 (2005): j.jacc.2005.07.042v1 Figure IG2

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Figure 2 (A) Intracardiac recording during sinus rhythm in a patient showing a characteristic potential (P) following the coronary sinus (CS) atrial electrogram (A) (arrows). (B) Intracardiac recording during tachycardia showing the CS (P) now preceding the CS (A) (arrows).