Nationwide Survey of Catheter Ablation for Atrial Fibrillation: The Japanese Catheter Ablation Registry of Atrial Fibrillation (J-CARAF)
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Key result
At 1 year after catheter ablation, 70.9% of patients with paroxysmal atrial fibrillation and approximately 60% with non-paroxysmal atrial fibrillation achieved freedom from arrhythmia or clinical success.
Population
1,208 patients who underwent catheter ablation for atrial fibrillation with 1-year follow-up data, average…
Design
Cohort
Follow-up
1 year
Authors
Discussion
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Member takes
Implication
Registry data support ablation counseling in AF; extends observational benchmarks but leaves open randomized validation of predictors.
Study Design
Type
Cohort (n=1,208)
Multicenter
Yes
Structured PICO
P
Population
1,208 patients who underwent catheter ablation for atrial fibrillation (AF) with 1-year follow-up data, average age 61.9 years, 76.7% male, in Japan. Included 64.3% paroxysmal AF (PAF), 20.4% persistent AF (pAF), and 15.3% long-standing pAF (LS-pAF).
I
Intervention
Catheter ablation for atrial fibrillation (76.3% first session, 20.2% second session, 3.5% subsequent sessions)
O
Outcome
1-year successful outcome (composite of freedom from AF/AFL/AT recurrence or clinical/partial success)composite
Main Result
Absolute Event Rate: 70.9% vs 61.4%
p-value: p=<0.01
In a nationwide Japanese registry, catheter ablation for atrial fibrillation achieved a 1-year success rate of approximately 70% for paroxysmal AF and 60% for non-paroxysmal AF, with shorter procedure times and elimination of AF inducibility predicting favorable outcomes.
Limitations
- Follow-up data were obtained for only half of the initially registered patients, potentially missing patients with unfavorable outcomes.
- Pharmacological treatment, frequency of outpatient visits, and judgment of AF recurrence were entrusted to each individual physician.
- Details of postprocedural AF induction methods were not included in the survey.
- Follow-up data obtained for only half of registered patients
- Pharmacological treatment, frequency of outpatient visit, and judgment of AF recurrence were entrusted to each physician
- Details of postprocedural AF induction were not included in the survey
Cite This Study
Murakawa et al. (2014) conducted a cohort in Atrial Fibrillation (n=1,208). Catheter ablation vs. Comparison between AF types (paroxysmal vs. persistent/long-standing persistent) was evaluated on Freedom from AF/AFL/AT recurrence or clinical/partial success at 1 year (p=<0.01). At 1 year after catheter ablation, 70.9% of patients with paroxysmal atrial fibrillation and approximately 60% with non-paroxysmal atrial fibrillation achieved freedom from arrhythmia or clinical success.
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