The Importance of Bidirectional Block during Pulmonary Vein Isolation

The definition of a successful ablation of atrial fibrillation can vary among electrophysiologists. A commonly described endpoint is bidirectional block of the four pulmonary veins. A case is described in which entrance block into a pulmonary vein was achieved early during pulmonary vein isolation....

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Bibliographic Details
Published in:Pacing and clinical electrophysiology 2013-05, Vol.36 (5), p.e143-e145
Main Authors: KIM, JOONHYUK, DESAI, SHALIN, JADONATH, RAM, BELDNER, STUART J.
Format: Article
Language:English
Subjects:
ablation
atrial fibrillation
Atrial Fibrillation - diagnosis
Atrial Fibrillation - surgery
Catheter Ablation
electrocardiogram
electrophysiology – clinical
Female
Heart Conduction System - surgery
Humans
Middle Aged
Pulmonary Veins - surgery
Reoperation
Treatment Failure
Treatment Outcome
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Description
Summary:The definition of a successful ablation of atrial fibrillation can vary among electrophysiologists. A commonly described endpoint is bidirectional block of the four pulmonary veins. A case is described in which entrance block into a pulmonary vein was achieved early during pulmonary vein isolation. However, triggers from the pulmonary vein continued to conduct into the atrium, revealing the block was only unidirectional. Further ablation resulted in true electrical isolation and highlights the importance of achieving bidirectional block. (PACE 2013; 36:e143–e145)
ISSN:0147-8389
1540-8159
DOI:10.1111/j.1540-8159.2012.03446.x