Key result
Recurrence of atrial flutter after radiofrequency ablation was significantly lower in patients with complete versus incomplete isthmus block (0% vs 37.5%; P<0.0001).
Why the study?
Does radiofrequency catheter ablation prevent recurrent atrial flutter or fibrillation in patients with typical atrial flutter?
Cohort (n=144)
Does radiofrequency catheter ablation prevent recurrent atrial flutter or fibrillation in patients with typical atrial flutter?
Absolute Event Rate: 0% vs 37.5%
p-value: p=<0.0001
While radiofrequency ablation of typical atrial flutter is highly effective with low flutter recurrence, patients remain at significant long-term risk for developing atrial fibrillation, particularly those with a prior history or inducible atrial fibrillation.
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Targeting complete isthmus block may lower flutter recurrence; extends observational support for this endpoint but leaves open randomized confirmation.
TAI et al. (1998) conducted a cohort in typical atrial flutter (n=144). Complete isthmus block during radiofrequency ablation vs. Incomplete isthmus block was evaluated on recurrent atrial flutter (p=<0.0001). Recurrence of atrial flutter after radiofrequency ablation was significantly lower in patients with complete versus incomplete isthmus block (0% vs 37.5%; P<0.0001).
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