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Updated: Apr 28, 2026
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Association between ablation technology and asymptomatic cerebral injury following atrial fibrillation ablation
Liu Guijian1, Zhu Wenqing, Wang Xinggang
1Key Laboratory of Viral Heart Diseases, Ministry of Public Health, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.
Background:
Asymptomatic cerebral injury (ACI) detected by diffusion-weighted magnetic resonance imaging (MRI) following atrial fibrillation (AF) ablation has been reported recently. The purpose of this study was to provide an overview of the incidence of ACI detected by MRI following AF ablation and to explore the association between ablation technology and ACI by systematically reviewing published trials.
Methods And Results:
PubMed, Web of Science, and the Cochrane Library Databases were systematically searched for studies exploring ACI detected by MRI following AF ablation. Incidence of ACI, odds ratios, and 95% confidence intervals (CIs) were pooled. We identified 21 eligible studies. The combined ACI incidence across all studies was 15.9% (95% CI: 0.124-0.202). We also did a subgroup analysis stratified by different technologies. The incidence of ACI stratified by ablation technology was 13.0%, 27.6%, 12.5%, 17.3%, and 32.6% of the irrigated radiofrequency (RF), multielectrode-phased RF pulmonary vein ablation catheter (PVAC), cryoballoon, laser balloon, and nMARQTM groups, respectively.
Conclusions:
The incidence of ACI following AF ablation with PVAC was higher than with other technologies. Uninterrupted oral anticoagulant (OAC) during the procedure could lower the incidence of ACI. It seems prudent not to interrupt OACs during the procedure. In addition, intraprocedural activated clotting time was associated with ACI. Different MRI diagnostic criteria for ACI also influenced the results. To facilitate the future research, a generally accepted definition for silent cerebrovascular ischemia suitable to different kinds of MRI is needed.
Insights
Asymptomatic cerebral injury (ACI) after atrial fibrillation (AF) ablation occurs in 15.9% of patients. Pulmonary Vein Ablation Catheter (PVAC) use was linked to higher ACI incidence, while uninterrupted anticoagulation may reduce risk.
Area of Science:
- Cardiology
- Neurology
- Medical Imaging
Background:
- Asymptomatic cerebral injury (ACI) is increasingly detected by diffusion-weighted magnetic resonance imaging (MRI) after atrial fibrillation (AF) ablation.
- Understanding the incidence and risk factors for ACI is crucial for patient safety and procedural optimization.
Purpose of the Study:
- To systematically review and quantify the incidence of ACI following AF ablation.
- To explore the association between different ablation technologies and the occurrence of ACI.
Main Methods:
- A systematic literature search was conducted across PubMed, Web of Science, and Cochrane Library Databases.
- Data on ACI incidence, odds ratios, and confidence intervals were pooled from 21 eligible studies.
- Subgroup analysis was performed to compare ACI rates across various ablation technologies.
Main Results:
- The overall incidence of ACI detected by MRI following AF ablation was 15.9%.
- Incidence varied by technology: irrigated radiofrequency (RF) (13.0%), multielectrode-phased RF pulmonary vein ablation catheter (PVAC) (27.6%), cryoballoon (12.5%), laser balloon (17.3%), and nMARQTM (32.6%).
- Higher ACI incidence was observed with PVAC compared to other technologies.
Conclusions:
- PVAC technology is associated with a higher incidence of ACI post-AF ablation.
- Maintaining uninterrupted oral anticoagulation (OAC) during the procedure may reduce ACI incidence.
- Standardized MRI diagnostic criteria for silent cerebrovascular ischemia are needed for future research.
