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Junctional tachycardia, alternatively known as junctional ectopic tachycardia (JET), originates from the atrioventricular (AV) junction, which encompasses the AV node and His bundle. JET is rarely encountered, especially in the adult population, and its pathogenesis remains incompletely understood. Furthermore, its…

Key Points Atypical or nonisthmus-dependent atrial flutter and atrial macroreentry requires fixed or functional barriers and regions of slow conduction. Atypical flutters are often recognized after catheter ablation or surgical treatment of atrial fibrillation (AF) or after surgery that involves…