Key result
In patients with recurrent atrial fibrillation after pulmonary vein isolation, recovery of conduction from the previously ablated segment was observed in 83% of patients and 71% of isolated veins.
Why the study?
Does recovery of pulmonary vein conduction cause recurrence of atrial fibrillation after pulmonary vein isolation in patients with drug-refractory AF?
Population
85 patients with symptomatic, drug-refractory atrial fibrillation undergoing pulmonary vein isolation. Mean…
Design
Cohort
Follow-up
15.5±10 months (after the second session)
Authors
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Pulmonary vein reconnection was associated with most AF recurrences after PVI; leaves open whether targeted re-isolation improves outcomes.
Observational (n=85)
No
Does recovery of pulmonary vein conduction cause recurrence of atrial fibrillation after pulmonary vein isolation in patients with drug-refractory AF?
The major cause of atrial fibrillation recurrence after pulmonary vein isolation is the recovery of conduction from previously ablated segments, suggesting that additional targeted ablation sessions can improve procedural success.
Noguchi et al. (2004) conducted an observational in Atrial fibrillation (n=85). Radiofrequency catheter ablation for pulmonary vein isolation was evaluated on Recovery of left atrium to pulmonary vein (LA-PV) conduction in patients with recurrent AF. In patients with recurrent atrial fibrillation after pulmonary vein isolation, recovery of conduction from the previously ablated segment was observed in 83% of patients and 71% of isolated veins.
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