Related Experiment Video
Updated: Sep 5, 2025
Robotic Ablation of Atrial Fibrillation
Published on: May 29, 2015
Comparing the efficacy of catheter ablation strategies for persistent atrial fibrillation: a Bayesian analysis of
Sijia Wu1, Hongkai Li1, Shaolei Yi2
1Institute for Medical Dataology, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China.
Insights
The PVI + PBOX + NPV ablation strategy is most effective for persistent atrial fibrillation (perAF). Individualized mapping and ablation techniques also show promise for perAF treatment.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Interventions
Background:
- Catheter ablation is a recommended first-line treatment for atrial fibrillation (AF).
- Established ablation strategies for persistent AF (perAF) are lacking.
- Existing evidence on ablation benefits for perAF requires systematic analysis and ranking.
Purpose of the Study:
- To systematically analyze and rank various ablation strategies for persistent atrial fibrillation (perAF).
- To provide guidance for clinical practice in treating perAF.
Main Methods:
- Inclusion of randomized controlled trials (RCTs) focused on perAF ablation.
- Bayesian random-effects network meta-analysis model.
- Primary outcome assessment based on atrial tachyarrhythmia (AT) recurrence after a single ablation procedure.
Main Results:
- Analysis of 23 studies involving 3394 patients and 22 ablation strategies.
- Pulmonary vein isolation (PVI) + electrical box isolation of the left atrial posterior wall (PBOX) + non-PV trigger ablation (NPV) demonstrated the best treatment effect.
- Individualized strategies like PVI + rotors, PVI + dispersion areas, and PVI + low voltage zone (LVZ) also showed superior outcomes.
Conclusions:
- The PVI + PBOX + NPV strategy is ranked highest for perAF ablation.
- Individualized substrate modification mapping and ablation strategies represent a promising direction for perAF treatment.
- Pulmonary vein isolation (PVI) remains a cornerstone procedure for perAF.
Background:
Catheter ablation has been recommended as the first-line treatment option for selected patients with atrial fibrillation (AF). However, a widely accepted ablation strategy for persistent AF (perAF) has not yet been established. The benefits of ablation strategies are not conclusive for perAF. There is an urgent need to systematically analyze the results of previous studies and rank these treatment strategies to guide clinical practice.
Methods:
Randomized controlled trials (RCTs) on ablation for perAF were included. The primary outcome was recurrence of atrial tachyarrhythmia (AT) after a single ablation procedure. A Bayesian random-effects network meta-analysis model was fitted.
Results:
Twenty-three studies were included in the analysis. A total of 3394 patients and 22 ablation strategies were found in the involved studies. The ablation strategy of pulmonary vein isolation (PVI) + electrical box isolation of the left atrial posterior wall (PBOX) + non-PV trigger ablation (NPV) showed the best treatment effect in terms of the primary outcome. The individualized ablation strategies of mapping and ablation combined with PVI, such as PVI + rotors, PVI + dispersion areas, and PVI + low voltage zone (LVZ) also showed a better ablation effect in perAF.
Conclusions:
PVI ablation is a widely used strategy in perAF and is recognized as a cornerstone procedure for perAF. The PVI + PBOX + NPV strategy showed the highest rank in our analysis. Mapping and ablation strategies that could provide individualized substrate modification also showed a better rank in our analysis and are believed to be a promising direction for the treatment of perAF.
Related Concept Videos
01:25Dysrhythmias VI: Management of Dysrhythmias
01:25ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
01:14Node Analysis for AC Circuits
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...