Vernakalant Versus Ibutilide In Recent-Onset Atrial Fibrillation

3mg/kg Brinavess (Vernakalant) in 100ml normal saline over 10min. If atrial fibrillation continues after another 15 minutes of observation, patients will receive a second infusion of 2mg/kg Brinavess (Vernakalant) over 10 minutes

Patients will be given 1mg of Corvert (Ibutilide) in 100ml normal saline intravenously over 10min. If atrial fibrillation continues after another 10 minutes of observation, patients will receive a second infusion of 1mg ibutilide over 10min.