Antazoline in Comparison to Propafenone in Pharmacological Cardioversion of Atrial Fibrillation.

Participants assigned to the antazoline group will be administered antazoline in boluses in boluses of 100 mg diluted to 20 cm3 every 10 minutes up to a total dose of 300 mg diluted to 60 cm3 or conversion of AF to SR. Drug administration will also be stopped in case of an adverse event or conversion of AF to a different supraventricular arrhythmia. BP will be measured before every injection.

Patients assigned to the propafenone group were administered three 20-cm3 boluses every 10 minutes up to 60 cm3 or conversion of AF to SR. Each of the first two boluses included 70 mg propafenone (total dose 140 mg), and the third bolus contained only 20-cm3 0.9% NaCl. Drug administration will be stopped in case of an adverse event or conversion of AF to a different supraventricular arrhythmia. BP will be measured before every injection.