Key result
Very late recurrence (>12 months) of atrial fibrillation after ablation occurred in 6% of patients and was associated with fewer multiple AF foci than late recurrence (23% vs 63%, P=0.02).
Why the study?
Does very late recurrence of atrial fibrillation (>12 months) have a different clinical outcome compared to late recurrence (within 12 months) in patients who underwent catheter ablation for paroxysmal AF?
Population
207 patients with drug-refractory paroxysmal atrial fibrillation who underwent successful focal ablation or…
Comparison
Catheter ablation vs Late recurrent AF
Design
Cohort
Follow-up
mean 30 +/- 11 months, up to 51 months
Authors
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Very late AF recurrence may reflect fewer triggers and a benign course; leaves open tailored surveillance strategies pending prospective validation.
Observational (n=207)
Does very late recurrence of atrial fibrillation (>12 months) have a different clinical outcome compared to late recurrence (within 12 months) in patients who underwent catheter ablation for paroxysmal AF?
Absolute Event Rate: 23% vs 63%
p-value: p=0.02
Very late recurrence of atrial fibrillation (>12 months) after ablation for paroxysmal AF is rare (6%) and associated with a more benign clinical course requiring fewer antiarrhythmic drugs than earlier recurrences.
HSIEH et al. (2003) conducted an observational in Paroxysmal atrial fibrillation (n=207). Catheter ablation vs. Late recurrent AF (within 12 months) was evaluated on Incidence of multiple (≥2) AF foci (p=0.02). Very late recurrence (>12 months) of atrial fibrillation after ablation occurred in 6% of patients and was associated with fewer multiple AF foci than late recurrence (23% vs 63%, P=0.02).
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