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Atrial conduction velocity and risk of recurrent atrial fibrillation after ablation: Time to blank the blanking period?

Atrial fibrillation (AF) can be maintained by rapid focal firing with fibrillatory conduction or by re-entrant activity. Typically, we associate the former mechanism with paroxysmal atrial fibrillation while an evolved substrate mediating re-entry is more commonly associated with the persistent form. This pathophysiological distinction, however, is blurred, since the terms paroxysmal or persistent are phenotypical descriptors of heterogenous substrates which may involve both mechanisms. This article is protected by copyright. All rights reserved.