Atrial Fibrillation Ablation by the Epicardial Approach.

Q: What is the clinical evidence from this study?

Study design: Review. Population: Atrial fibrillation. Intervention: Epicardial and hybrid (epicardial-endocardial) ablation vs. Endocardial catheter ablation or standalone epicardial ablation.

Anil K. Gehi; Andy C. Kiser; J. Paul Mounsey

doi:10.4022/jafib.979

February 28, 2014

Atrial Fibrillation Ablation by the Epicardial Approach.

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Key result

Hybrid epicardial and endocardial ablation demonstrates improved efficacy for treating persistent or long-standing persistent atrial fibrillation compared to standalone endocardial or epicardial approaches.

Why the study?

Does epicardial or hybrid ablation improve freedom from atrial fibrillation in patients with atrial fibrillation compared to standard catheter ablation or medical therapy?

Structured PICO

Does epicardial or hybrid ablation improve freedom from atrial fibrillation in patients with atrial fibrillation compared to standard catheter ablation or medical therapy?

P

Population

Patients with atrial fibrillation, particularly those with persistent or long-standing persistent AF, enlarged left atria, or those who have failed prior endocardial catheter ablation.

I

Intervention

Epicardial surgical ablation and hybrid (combined epicardial and endocardial) ablation techniques.

C

Comparator

Standard endocardial catheter ablation, antiarrhythmic drug therapy, or no treatment (as reviewed across various studies).

O

Outcome

Freedom from atrial fibrillation or atrial arrhythmias (typically defined as no episodes > 30 seconds).

Hybrid and minimally invasive epicardial ablation approaches offer a highly effective alternative for maintaining sinus rhythm in patients with difficult-to-treat persistent atrial fibrillation, balancing improved durability against increased procedural morbidity.

Limitations

Significant anatomic considerations and challenges in creating contiguous transmural lesions on a beating heart
Higher surgical risk with epicardial ablation compared to endocardial approaches
Lack of randomized controlled trials comparing hybrid ablation to multiple staged endocardial ablations
No cost-effectiveness studies performed to justify the additive cost of the hybrid procedure

Implication

May support hybrid ablation for persistent AF; hypothesis-generating and requires RCTs before practice change.

Abstract

Catheter ablation is an effective treatment for atrial fibrillation (AF). However, over long-term follow-up, it is becoming clear that AF often recurs and repeat ablation is required. With the goal of improving efficacy, particularly in those patients with risk factors for poor outcomes using a standard endocardial ablation technique, surgical epicardial ablation has emerged as an alternative methodology. Since its advent in the 1980s, surgical ablation techniques have continued to evolve. New ablation tools make a minimally invasive surgical approach possible. And most recently, we have seen the development of a hybrid (epicardial and endocardial) approach to AF ablation, which can draw upon the advantages of both options.

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Cite This Study

Gehi et al. (2014) conducted a review in Atrial fibrillation. Epicardial and hybrid (epicardial-endocardial) ablation vs. Endocardial catheter ablation or standalone epicardial ablation was evaluated. Hybrid epicardial and endocardial ablation demonstrates improved efficacy for treating persistent or long-standing persistent atrial fibrillation compared to standalone endocardial or epicardial approaches.

synapsesocial.com/papers/6a159fc215658026c0829892 https://doi.org/10.4022/jafib.979