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Pretreatment with verapamil in patients with persistent or chronic atrial fibrillation who underwent electrical cardioversion

Antonio De Simone, MD^a, Giuseppe Stabile, MD^a, Dino Franco Vitale, MD, Pietro Turco, MD^a, Maurizio Di Stasio, MD, Ferdinando Petrazzuoli, MD^a, Maurizio Gasparini, MD, Carmine De Matteis, MD, Raffaele Rotunno, MD^|| and Tommaso Di Napoli, MD^||

^a Laboratorio di Elettrofisiologia, Casa di Cura "San Michele," Maddaloni, Italy
Dipartimento di Geriatria, Università degli Studi di Napoli "Federico II," Napoli, Italy
Istituto Clinico "Humanitas," Rozzano, Italy
Servizio di Riabilitazione, Ospedale Civile di Arienzo, Arienzo, Italy
^|| Unità Coronarica, Ospedale Civile di Polla, Polla, Italy

View larger version (17K): [in a new window]   Figure 1 AF-free survival data during follow-up period of each group. Mantel-Haenszel cumulative chi-square among the three curves reached a significant level when comparing group I with group II and III (chi-square = 5.2 and 4, respectively; p < 0.05), but not when comparing group II with group III.