Pulmonary vein triggers, focal sources, rotors and atrial cardiomyopathy: implications for the choice of the most effective ablation therapy
Key result
Ablation strategies for atrial fibrillation must be tailored to the underlying pathophysiology, with pulmonary vein isolation for paroxysmal AF and substrate-driven or hybrid procedures for persistent AF.
Population
Patients with atrial fibrillation (paroxysmal and nonparoxysmal)
Design
Review
Authors
Discussion
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Implication
Supports tailored AF ablation clinically; leaves open prospective trials to validate pathophysiology-based strategies.
Key Points
- To evaluate the pathophysiological mechanisms underlying atrial fibrillation—including pulmonary vein triggers, focal sources, and rotors—to guide the selection of optimal ablation therapies.
- Reviewed mechanistic targets for catheter and surgical ablation across paroxysmal and nonparoxysmal atrial fibrillation.
- Assessed clinical evidence evaluating localized rotor elimination and hybrid endocardial-epicardial ablation techniques.
- Pulmonary vein isolation successfully treats paroxysmal atrial fibrillation but proves insufficient as a standalone therapy for nonparoxysmal cases.
- Targeting localized rotors characterized by meandering cores and spiral waves represents an effective pathway toward substrate-driven intervention in persistent arrhythmia.
- Hybrid ablation combining transcatheter endocardial and off-pump surgical epicardial approaches achieves favorable long-term rhythm control in persistent cases and following failed catheter procedures.
Structured PICO
P
Population
Patients with atrial fibrillation (paroxysmal and nonparoxysmal)
I
Intervention
Ablation therapy (pulmonary vein isolation, rotor ablation, hybrid AF ablation)
This review highlights the evolving strategies in AF ablation, emphasizing pulmonary vein isolation for paroxysmal AF and substrate-driven or hybrid approaches for nonparoxysmal AF.
Cite This Study
Pison et al. (2016) conducted a review in Atrial fibrillation. Ablation therapy was evaluated. Ablation strategies for atrial fibrillation must be tailored to the underlying pathophysiology, with pulmonary vein isolation for paroxysmal AF and substrate-driven or hybrid procedures for persistent AF.