Strategies of catheter ablation of persistent atrial fibrillation

<正>A trial fibrillation（AF）is the commonest type of arrhythmia which is seen as a growing public health burden affecting patients'morbidity and mortality.1 Since the end of last century,catheter ablation has been evolving as the treatment of choice in a particular subset of patients with AF,（2,3）and currently being the most common catheter ablation procedure performed worldwide.Most centers have progressively moved from performing paroxysmal