Related Experiment Video
Updated: May 11, 2026
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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Pulsed Field Ablation Using Focal Contact Force-Sensing Catheters for Treatment of Recurrent Left Atrial Flutter
Ligang Ding1, Shangyu Liu2, Le Li1
1Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
The Canadian Journal of Cardiology
|May 9, 2026
Summary
Contact force-guided pulsed field ablation (PFA) shows improved efficacy for recurrent left atrial flutter (AFL) post-atrial fibrillation ablation compared to radiofrequency ablation (RFA). This PFA approach demonstrates a lower recurrence rate and is a promising treatment for this challenging patient group.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Tissue contact is crucial for pulsed field ablation (PFA) efficacy.
- Evidence for contact force-guided PFA in recurrent left atrial flutter (AFL) post-atrial fibrillation (AF) ablation is limited.
- This study compares PFA with radiofrequency ablation (RFA) in this difficult-to-treat population.
Purpose of the Study:
- To investigate the efficacy and safety of contact force-guided PFA versus RFA for recurrent left AFL.
- To evaluate recurrence rates and procedure-related complications.
Main Methods:
- Prospective enrollment for PFA in patients with atypical AFL post-prior AF ablation.
- Retrospective analysis of a control group treated with RFA.
- Assessment of coronary artery spasm risk via angiography.
- Efficacy endpoint: atrial arrhythmia recurrence after 3-month blanking period.
- Safety endpoint: severe procedure-related complications.
Main Results:
- 253 patients included: 119 PFA, 134 RFA.
- 12-month follow-up showed significantly lower atrial tachyarrhythmia recurrence in the PFA group (24%) vs. RFA group (36%; P=0.027).
- PFA was associated with a reduced recurrence risk (Hazard ratio: 0.56; P=0.017).
- Higher acute MI block rate in PFA group (100% vs. 64%; P<0.001).
- No severe complications like fistula, phrenic nerve injury, or coronary spasm observed.
Conclusions:
- Contact force-guided PFA is a promising treatment for refractory left AFL post-AF ablation.
- PFA demonstrates favorable efficacy compared to conventional RFA in this patient cohort.
- The safety profile of PFA in this context appears favorable, with no major complications reported.
