February 28, 2026Open Access

Early recurrence of atrial arrhythmia following catheter ablation of atrial tachycardia consecutive to ablation of atrial fibrillation using the updated blanking period

Q: What is the clinical evidence from this study?

Study design: Cohort. Population: Atrial tachycardia subsequent to atrial fibrillation ablation (n=194). Intervention: Early recurrence of atrial arrhythmia (within 56 days) vs. No early recurrence. Primary outcome: Late recurrence of atrial arrhythmia (beyond 56 days) (HR 1.53, 95% CI 1.05-2.34, p=0.02).

Key Result

Early recurrence of atrial arrhythmia within 56 days after catheter ablation of atrial tachycardia subsequent to atrial fibrillation ablation was associated with late recurrence (HR 1.53).

Study Design

Type

Cohort (n=194)

Multicenter

PICO

Population

Atrial tachycardia subsequent to atrial fibrillation ablation (n=194)

Intervention / Comparator

Early recurrence of atrial arrhythmia (within 56 days) vs No early recurrence

Primary Outcome

Late recurrence of atrial arrhythmia (beyond 56 days) — HR 1.53 (1.05-2.34), p=0.02

Main Result

Effect estimate: HR 1.53 (95% CI 1.05-2.34)

Absolute Event Rate: 69% vs 58%

p-value: p=0.02

Limitations

Single-center retrospective analysis with a modest sample size
Recurrent atrial arrhythmia detected using intermittent Holter monitoring or clinically, likely underestimating rates
Findings primarily apply to thermal (RF) ablation
Use of conventional AT mapping techniques cannot exclude mismatch of ATs with centrifugal activation
Unable to assess relationship between early and late recurrence on quality of life and healthcare utilization

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Discussion

Authors

Raphael Spittler

Electrophysiology

Antonia Dalmer

Cardiac Imaging

Karoline Linke

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References and Citations

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Discussion

Cite this study

Spittler et al. (Wed,) conducted a cohort in Atrial tachycardia subsequent to atrial fibrillation ablation (n=194). Early recurrence of atrial arrhythmia (within 56 days) vs. No early recurrence was evaluated on Late recurrence of atrial arrhythmia (beyond 56 days) (HR 1.53, 95% CI 1.05-2.34, p=0.02). Early recurrence of atrial arrhythmia within 56 days after catheter ablation of atrial tachycardia subsequent to atrial fibrillation ablation was associated with late recurrence (HR 1.53).

synapsesocial.com/papers/6a025aa79cddff7633412e43 — DOI: https://doi.org/10.25358/openscience-14529

Early recurrence of atrial arrhythmia following catheter ablation of atrial tachycardia consecutive to ablation of atrial fibrillation using the updated blanking period

Key Result

Study Design

PICO

Main Result

Limitations

Citation Network

Connected Papers

Discussion

Authors

Actions

References and Citations

Citation Network

Connected Papers

Discussion

Cite this study