Key result
A single 3-minute freeze strategy for cryoballoon ablation showed equal efficacy to a conventional 4-minute plus bonus freeze approach for 2-year freedom from arrhythmias (77.5% vs 78.8%; P=0.82).
Why the study?
Does a single 3-minute freeze strategy maintain efficacy and reduce procedural times compared to a conventional 4-minute plus bonus-freeze strategy in patients with paroxysmal atrial fibrillation undergoing cryoballoon ablation?
Population
160 patients with paroxysmal atrial fibrillation undergoing pulmonary vein isolation, mean age 58.0 ± 13.3…
Comparison
Single 3-minute freeze strategy using… vs Conventional 4-minute plus bonus-freeze strategy…
Design
Cohort
Follow-up
2 years
Authors
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May support shorter 3-minute freezes to reduce procedure time in paroxysmal AF; leaves open confirmation in randomized trials.
Cohort (n=160)
No
Does a single 3-minute freeze strategy maintain efficacy and reduce procedural times compared to a conventional 4-minute plus bonus-freeze strategy in patients with paroxysmal atrial fibrillation undergoing cryoballoon ablation?
Absolute Event Rate: 77.5% vs 78.8%
p-value: p=0.82
A single 3-minute freeze strategy for second-generation cryoballoon ablation in paroxysmal AF is as effective as the conventional 4-minute plus bonus freeze approach at 2 years, while significantly reducing procedure and fluoroscopy times.
Ciconte et al. (2016) conducted a cohort in Paroxysmal atrial fibrillation (PAF) (n=160). Single 3-minute freeze strategy using second-generation cryoballoon vs. Conventional 4-minute plus bonus-freeze strategy was evaluated on Freedom from atrial tachyarrhythmias at 2 years (p=0.82). A single 3-minute freeze strategy for cryoballoon ablation showed equal efficacy to a conventional 4-minute plus bonus freeze approach for 2-year freedom from arrhythmias (77.5% vs 78.8%; P=0.82).
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