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Focal Atrial Tachycardia Originating From the Right Atrial Appendage Masquerading as Inappropriate Sinus Tachycardia. 2021

Fatemeh Adabifirouzjaei, and Anthony Nicholas DeMaria, and Gordon Ho
Division of Cardiology, University of California-San Diego, Cardiovascular Institute, La Jolla, California, USA.

Focal atrial tachycardia arising from the right atrial appendage (RAAT) may be misdiagnosed as sinus tachycardia. The electrocardiogram from this case demonstrates a negative notched P-wave in leads V1 and V2 during RAAT compared with a beat of sinus rhythm. RAAT was confirmed and eliminated with mapping and ablation. (Level of Difficulty: Advanced.).

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