title: Interactions between two simultaneous tachycardias within an electrically isolated pulmonary vein.
abstract: Pulmonary vein (PV) arrhythmogenicity underlying the maintenance of atrial fibrillation (AF) may be explained by three mechanisms: enhanced automaticity, triggered activity, and reentry. There are only a few reports describing sustained PV tachycardias (PVT) following electrical disconnection from the left atrium, in which the electrophysiological features are most consistent with a reentrant mechanism. We describe the case of a patient with paroxysmal AF demonstrating PVT within an isolated PV with high-density mapping revealing two different PVTs interacting in a "ping-pong" manner.
authors.affiliation: Hôpital Cardiologique du Haut-Lévêque, Bordeaux, France. rostock@uke.uni-hamburg.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Rostock
authors.forename: Mark D
authors.initials: MD
authors.lastname: O'Neill
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Prashanthan
authors.initials: P
authors.lastname: Sanders
authors.forename: Michel
authors.initials: M
authors.lastname: Haïssaguerre
mesh_terms: D000241:Adenosine / Q000627:therapeutic use; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000150:complications / Q000601:surgery; D017115:Catheter Ablation / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D011667:Pulmonary Veins / Q000187:drug effects / Q000503:physiopathology*; D013610:Tachycardia / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D000889:Anti-Arrhythmia Agents; D000241:Adenosine