2007
DOI: 10.1111/j.1540-8167.2007.00870.x
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Atrial Tachycardia Transition During Ablation of Persistent Atrial Fibrillation: What is the Mechanism?

Abstract: Case PresentationThe sequential ablation strategy for persistent atrial fibrillation involves a series of predetermined ablation steps while monitoring of the impact after each step by measuring AF cycle length at "sentinel" electrodes, principally the right and left atrial appendages. 1,2 We describe a 69-year-old woman undergoing ablation for persistent AF in whom atrial fibrillation reverted to atrial tachycardia during the procedure. The left ventricular ejection fraction was 68% and the left atrial Figure… Show more

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Cited by 2 publications
(2 citation statements)
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“…2 and 3). 6 We were fortunate to make this observation since a catheter generally remains in the CS throughout the study during our procedures and the new tachycardia after the type 1A transition was usually macro‐reentry related either to the cavotricuspid isthmus or perimitral region. That is, a recording electrode relatively close to the ablation site was available to serve as an analogue for measuring the “postpacing interval” of entrainment.…”
Section: Discussionmentioning
confidence: 99%
“…2 and 3). 6 We were fortunate to make this observation since a catheter generally remains in the CS throughout the study during our procedures and the new tachycardia after the type 1A transition was usually macro‐reentry related either to the cavotricuspid isthmus or perimitral region. That is, a recording electrode relatively close to the ablation site was available to serve as an analogue for measuring the “postpacing interval” of entrainment.…”
Section: Discussionmentioning
confidence: 99%
“…Dual‐loop AT was defined as the concomitance of 2 simultaneously reentrant circuits, a difference between the PPI and TCL from the dominant circuit of ≤20 milliseconds, and a sudden transformation to a new reentrant tachycardia maintained by the second circuit after ablation of the dominant tachycardia . Dual‐loop AT is common in patients with postcardiac surgery, especially in correlation with congenital heart disease .…”
Section: Commentarymentioning
confidence: 99%