Is pulmonary vein isolation enough for persistent atrial fibrillation?

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Pulmonary vein isolation (PVI) is a standard treatment for atrial fibrillation (AF).
• Suboptimal success rates are frequently reported for PVI in persistent AF cases.
• Adjuvant ablation strategies targeting substrate modification outside pulmonary veins are being investigated to enhance PVI efficacy.

Purpose of the Study:

• To review the current evidence on the efficacy of adjuvant ablation in addition to PVI for persistent AF.
• To summarize different approaches for adjuvant ablation in persistent AF.
• To discuss the outcomes and future directions of adjuvant ablation strategies.

Main Methods:

• Literature review of studies investigating adjuvant ablation alongside PVI in persistent AF.
• Analysis of reported outcomes and success rates for various adjuvant ablation techniques.
• Synthesis of current evidence and expert opinions on the topic.

Main Results:

• Persistent AF presents unique challenges to PVI success.
• Adjuvant ablation strategies show potential for improving outcomes in persistent AF.
• Various substrate-based ablation approaches are being explored, with differing results.

Conclusions:

• Additional ablation targeting the atrial substrate beyond PVI may improve outcomes in persistent AF.
• Further research is needed to optimize adjuvant ablation techniques and patient selection.
• Future perspectives include refining substrate mapping and ablation strategies for persistent AF.