Key result
High-density mapping in a patient with paroxysmal atrial fibrillation revealed two different pulmonary vein tachycardias interacting in a "ping-pong" manner within an isolated pulmonary vein.
Case Report (n=1)
This case report demonstrates the complex electrophysiological mechanisms, specifically interacting reentrant tachycardias, that can occur within an isolated pulmonary vein in a patient with paroxysmal AF.
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.
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Rostock et al. (2007) conducted a case report in Paroxysmal atrial fibrillation (n=1). High-density mapping was evaluated. High-density mapping in a patient with paroxysmal atrial fibrillation revealed two different pulmonary vein tachycardias interacting in a "ping-pong" manner within an isolated pulmonary vein.
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