title: Termination of persistent atrial fibrillation during ablation: finding the needle in the haystack.
authors.affiliation: Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
authors.forename: Michael P
authors.initials: MP
authors.lastname: Riley
authors.forename: Francis E
authors.initials: FE
authors.lastname: Marchlinski
mesh_terms: D001281:Atrial Fibrillation / Q000601:surgery*; D017115:Catheter Ablation; D004554:Electric Countershock; D005260:Female; D006801:Humans; D008297:Male; D011667:Pulmonary Veins / Q000601:surgery*; D013617:Tachycardia, Supraventricular / Q000601:surgery*
keywords: clinical: cardiac mapping - electrogram analysis; clinical: catheter ablation - atrial fibrillation; clinical: electrophysiology - atrial arrhythmias