Long-term success is considered as freedom from arrhythmic events from the end of the blanking period to at least 36 months of follow-up after the ablation procedure in the absence of antiarrhythmic drugs.ĪF as a condition includes different clinical subtypes, and the success rate of catheter ablation (CA) of AF is hugely affected by patient characteristics. 6 1-year success is defined as freedom from arrhythmic events without antiarrhythmic drugs documented from the end of the blanking period (usually 3 months after ablation) to 12 months of follow-up. In a consensus document published by the Heart Rhythm Society, an ablation’s success is defined as freedom from symptomatic or asymptomatic AF, atrial tachycardia, or atrial flutter lasting ≥30 seconds after AF ablation. Success rates vary between 60% and 80%, for paroxysmal AF (PAF), depending on ablation strategies, and between 50% and 60% for persistent AF. 2,3 High acute success rates are achievable, but durable efficacy of previously successful PVIs for AF still remains a challenge, and finding the predictors of AF recurrence is of major importance. 1 Pulmonary vein isolation (PVI) in patients with symptomatic AF has become a well-established treatment option. ![]() AF is the most common sustained arrhythmia in clinical routine, and is associated with cardiovascular and cerebrovascular complications, dementia and mortality.
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