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Optimal rhythm-control strategy for recurrent atrial tachycardia after catheter ablation of persistent atrial

Xiao-Dong Zhang1, Jun Gu1, Wei-Feng Jiang1

  • 1Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiaotong University, 241 West Huaihai Road, Shanghai 200030, China.

European Heart Journal
|February 6, 2014
PubMed

Insights

Catheter ablation (CA) is superior to antiarrhythmic drugs (AAD) for treating recurrent atrial tachycardia (AT) after atrial fibrillation (AF) ablation, improving quality of life. However, CA carries a higher risk of immediate complications.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Interventions

Background:

  • Catheter ablation (CA) is a primary treatment for atrial fibrillation (AF).
  • Optimal management for recurrent atrial tachycardia (AT) post-AF ablation remains uncertain.
  • This study addresses the CA versus antiarrhythmic drugs (AAD) debate for recurrent AT.

Purpose of the Study:

  • To compare the efficacy and safety of CA versus AAD for recurrent AT following persistent AF ablation.
  • To evaluate long-term outcomes, including freedom from atrial tachyarrhythmia (ATa), complications, and quality of life (QoL).

Main Methods:

  • A parallel randomized controlled trial involving 201 patients with recurrent AT post-AF ablation.
  • Patients were randomized to either CA (n=101) or AAD (n=100).
  • Primary endpoint: freedom from ATa at 24 months. Secondary endpoints: complications, morbidity, QoL.

Main Results:

  • CA demonstrated a significantly higher rate of freedom from ATa (56.4% vs. 34.0%; P=0.001) compared to AAD.
  • CA was associated with more periprocedural complications (7.9% vs. 0%; P=0.012).
  • AAD group experienced more long-term adverse events (24.0% vs. 10.9%; P=0.014), and CA improved QoL.

Conclusions:

  • Catheter ablation is superior to AAD for maintaining sinus rhythm and improving QoL in patients with recurrent AT post-AF ablation.
  • CA offers better long-term safety and QoL compared to AAD.
  • The increased risk of periprocedural complications with CA warrants consideration.
Abstract

Keywords:
Antiarrhythmic drugsAtrial fibrillationAtrial tachycardiaCatheter ablationQuality of lifeRecurrence

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