Left atrial-pulmonary vein reentrant tachycardia following pulmonary vein isolation.

Pulmonary vein isolation has become the cornerstone of ablation for atrial fibrillation. However, it is sometimes followed by the development of left atrial macro-reentrant tachycardia. There is evidence to suggest that the myocardial sleeves within the pulmonary veins may be implicated in the mechanism of the tachycardia. Here we present a case of a post-ablation macro-reentrant tachycardia, in which the pulmonary veins and left atrial myocardium were involved.