Weber, S; Ndrepepa, G; Schneider, M; Deisenhofer, I; Zrenner, B; Schmitt, C
Electrophysiological differences of the spontaneous onset of paroxysmal and persistent atrial fibrillation.
BACKGROUND: Information about the spatiotemporal organization of atrial activity at the onset of atrial fibrillation (AF) is still limited. METHODS: AF mapping was performed in 30 patients with AF (mean age 53 +/- 9 years, 26 males) by deploying a noncontact mapping balloon in the left atrium (LA). Twenty-four patients had paroxysmal AF and six patients had persistent AF. Three types of AF episodes were analyzed: nonsustained AF (lasting 30 seconds, with spontaneous conversion or requiring internal cardioversion and subsequent stable sinus rhythm), and persistent AF episodes (stable sinus rhythm lasting