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Does early catheter ablation (<1 year) reduce atrial fibrillation recurrence compared with delayed ablation: A
Daniel Bradach1, Srilakshmi Ajith2, Thuslim Sheik3
1St. George's University School of Medicine, University Centre, Grenada.
Insights
Early catheter ablation (CA) within 12 months of diagnosis significantly reduces atrial fibrillation (AF) recurrence and hospitalizations compared to delayed CA. This finding supports timely intervention for symptomatic AF patients.
Area of Science:
- Cardiology
- Electrophysiology
- Public Health
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia globally.
- Catheter ablation (CA) effectively treats symptomatic AF.
- Early CA may prevent disease progression and reduce adverse cardiovascular events.
Purpose of the Study:
- To compare clinical outcomes of early (<12 months) versus delayed (>12 months) CA after AF diagnosis.
- To evaluate the impact of timing on AF recurrence, mortality, and hospitalizations.
- To synthesize pooled data on early vs. delayed CA standardized by diagnosis-to-ablation time.
Main Methods:
- Systematic literature search of major databases (PubMed, EMBASE, Scopus, Cochrane).
- Inclusion of observational cohort studies published until December 1, 2025.
- Primary outcome: AF recurrence; secondary outcomes: mortality, hospitalizations, MACCE.
Main Results:
- 10 studies with 22,748 patients analyzed.
- Early CA significantly lowered AF recurrence risk (RR 0.69; p=0.007) and AF-related hospitalizations (RR 0.58; p=0.04).
- No significant differences in mortality, MACCE, or stroke were observed between early and delayed CA.
Conclusions:
- Early CA (<12 months) demonstrates superior outcomes in reducing AF recurrence and hospitalizations.
- Findings suggest a benefit for early intervention in managing AF.
- Further randomized trials are warranted to confirm long-term benefits and identify optimal patient subgroups.
Background:
Atrial fibrillation (AF) is the most common cardiac arrhythmia worldwide. Catheter ablation (CA) is an effective therapy for symptomatic AF. Emerging evidence indicates that early CA may attenuate disease progression and reduce major adverse cardiovascular and cerebrovascular events (MACCE). There is a lack of high-quality pooled data comparing clinical outcomes of early versus delayed CA using a standardized diagnosis-to-ablation time. This meta-analysis evaluates whether early CA (<12 months) versus delayed CA (>12 months) after AF diagnosis is linked to differences in clinical outcomes, including AF/atrial arrhythmia recurrence, mortality, AF-related hospitalization, and MACCE.
Methods:
A systematic literature search of PubMed, EMBASE, Scopus and the Cochrane Central Register of Controlled Trials and observational cohort studies until December 1, 2025, was conducted. The primary outcome was AF recurrence.
Results:
A total of 10 studies including 22,748 patients were analyzed. For the primary outcome, early CA (<12 months) was associated with a significantly lower risk of AF recurrence compared with delayed ablation (>12 months) (RR 0.69; 95% CI, 0.54-0.88; p = 0.007, I2 = 92). Subgroup analyses suggested a consistent benefit in persistent AF populations. For secondary outcomes, early ablation was associated with a reduced risk of AF-related hospitalization (RR 0.58; 95% CI 0.39-0.86; p = 0.04; I2 = 0%) and repeat electrical cardioversion (RR 0.66; 95% CI 0.48-0.91; p = 0.03; I2 = 34%). No significant differences were observed for all-cause mortality, repeat ablation, MACCE, cardiovascular hospitalization, antiarrhythmic drug use, stroke/transient ischemic attack, or all-cause hospitalization.
Conclusion:
Early CA (<12 months) was associated with significantly lower rates of AF recurrence, electrical cardioversion, and AF-related hospitalizations compared with delayed CA (>12 months). Future randomized controlled trials are needed to evaluate potential long-term benefits and to identify patient subgroups most likely to benefit from early CA.
