Interactions between two simultaneous tachycardias within an electrically isolated pulmonary vein.
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.
Rostock
Thomas
T
Hôpital Cardiologique du Haut-Lévêque, Bordeaux, France. rostock@uke.uni-hamburg.de
O'Neill
Mark D
MD
Takahashi
Yoshihide
Y
Sanders
Prashanthan
P
Haïssaguerre
Michel
M
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
D000889:Anti-Arrhythmia Agents; D000241:Adenosine