Key result
Radiofrequency ablation achieved higher long-term freedom from recurrence in uncommon atrial flutter with a single circuit compared to multiple circuits (86% vs 20%).
Why the study?
Is radiofrequency ablation effective for different electrophysiological types of uncommon atrial flutter?
Population
37 patients with atrial flutter, including 20 with uncommon atrial flutter
Design
Cohort
Follow-up
long-term
Authors
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May inform circuit mapping before ablation in uncommon atrial flutter; leaves open need for randomized confirmation of single- versus multi-circuit outcomes.
Cohort (n=37)
Is radiofrequency ablation effective for different electrophysiological types of uncommon atrial flutter?
Absolute Event Rate: 86% vs 20%
Radiofrequency ablation is highly effective for uncommon atrial flutter with a single clockwise circuit, but may not be suitable for cases involving multiple circuits.
Gomes et al. (1998) conducted a cohort in Atrial flutter (n=37). Single clockwise circuit (Group I) vs. Multiple circuits and/or localized atrial fibrillation (Group II) was evaluated on Freedom from atrial flutter recurrence on long-term follow-up. Radiofrequency ablation achieved higher long-term freedom from recurrence in uncommon atrial flutter with a single circuit compared to multiple circuits (86% vs 20%).
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