Catheter Ablation as First-Line Therapy in Persistent Atrial Fibrillation: Patient Characteristics and Clinical...

Area of Science:

• Cardiology
• Electrophysiology
• Medical Interventions

Background:

• Persistent atrial fibrillation (PerAF) management often involves antiarrhythmic drugs (AADs) or catheter ablation.
• Catheter ablation is a viable alternative for rhythm control in PerAF patients.

Purpose of the Study:

• To determine the prevalence of catheter ablation as a first or second-line strategy for PerAF.
• To analyze patient characteristics and clinical outcomes associated with early vs. later ablation strategies.

Main Methods:

• A multicenter observational study of 2,083 patients undergoing first-time PerAF ablation (Jan 2020-Sep 2021).
• Patients were stratified into first-line ablation and second-line ablation groups.
• Comparison of demographics, comorbidities, and clinical outcomes between the two groups.

Main Results:

• 52% of patients received ablation as a first-line therapy.
• First-line ablation patients were more likely male and had fewer comorbidities (hypertension, heart failure) compared to second-line.
• Arrhythmia-free survival was similar, but second-line patients more frequently continued AADs.

Conclusions:

• First-line catheter ablation for PerAF is common in the U.S., particularly among men with fewer comorbidities.
• Further research is needed to identify specific patient subgroups who benefit most from early ablation intervention.