Key result
Dual-loop intra-atrial re-entrant tachycardia was present in 20% of patients after right atriotomy, and radiofrequency ablation success was significantly lower in these patients compared to those with single-loop circuits (63% vs 94%, p=0.046).
Population
40 consecutive patients with intra-atrial re-entrant tachycardia after open-heart surgery involving an…
Design
Cohort
Authors
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May prompt detailed entrainment mapping post-atriotomy; leaves open whether tailored strategies improve dual-loop ablation success.
Observational (n=40)
No
Absolute Event Rate: 63% vs 94%
p-value: p=0.046
Dual-loop intra-atrial re-entrant tachycardia occurs in approximately 20% of patients after right atriotomy and is associated with lower ablation success rates, emphasizing the need for careful electroanatomical and entrainment mapping.
Seiler et al. (2006) conducted an observational in Intra-atrial re-entrant tachycardia (IART) after open-heart surgery (n=40). Radiofrequency catheter ablation in dual-loop IART vs. Radiofrequency catheter ablation in single-loop IART was evaluated on Acute procedural success (termination of all re-entry circuits and inability to re-induce any IART) (p=0.046). Dual-loop intra-atrial re-entrant tachycardia was present in 20% of patients after right atriotomy, and radiofrequency ablation success was significantly lower in these patients compared to those with single-loop circuits (63% vs 94%, p=0.046).
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