Lessons From Radiofrequency Redo-Procedure After Cryoballoon Pulmonary Vein Isolation for Paroxysmal Atrial Fibrillation
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Key result
Atrial arrhythmia recurrences following cryoballoon pulmonary vein isolation were associated with focal pulmonary vein reconnections in 64% of initially isolated veins, which were readily ablated with focal radiofrequency delivery.
Population
44 patients who underwent a second ablation procedure using radiofrequency catheter for recurrent atrial…
Design
Cohort
Follow-up
7.7 ± 9 months (time to redo procedure)
Authors
Discussion
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Implication
Focal reconnections may guide redo ablation after cryoballoon PVI; hypothesis-generating for recurrence mechanisms and requires prospective validation.
Study Design
Type
Observational (n=44)
Multicenter
No
Structured PICO
P
Population
44 patients (mean age 57, 41% female) with recurrent atrial arrhythmia after an initial cryoballoon pulmonary vein isolation for paroxysmal atrial fibrillation who underwent a redo radiofrequency ablation procedure.
I
Intervention
Redo ablation procedure using focal radiofrequency catheter delivery
O
Outcome
Pulmonary vein reconduction rate, location of conduction gaps, and procedural parameters during redo radiofrequency ablationsurrogate
Atrial arrhythmia recurrences after cryoballoon pulmonary vein isolation are associated with focal reconnections at preferential anatomical sites, which can be effectively treated with focal radiofrequency ablation.
Limitations
- Single-center study
- Small sample size
- Non-randomized observational design
Cite This Study
Godin et al. (2013) conducted an observational in Paroxysmal Atrial Fibrillation (n=44). Radiofrequency redo ablation was evaluated on Pulmonary vein reconduction. Atrial arrhythmia recurrences following cryoballoon pulmonary vein isolation were associated with focal pulmonary vein reconnections in 64% of initially isolated veins, which were readily ablated with focal radiofrequency delivery.
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