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  • Title: [Comparative effects of cibenzoline and hydroquinidine in the prevention of auricular fibrillation. A randomized double-blind study].
    Author: Touboul P, Brembilla-Perrot B, Scheck F, Gabriel A, Lardoux H, Marchand X, Levy S.
    Journal: Ann Cardiol Angeiol (Paris); 1995 Nov; 44(9):525-31. PubMed ID: 8745663.
    Abstract:
    The objective of this study was to compare the efficacy and safety of cibenzoline (130 mg twice a day) and sustained-release hydroquinidine (300 mg twice a day) in the prevention of recurrent atrial fibrillation (AF). This randomized double-blind study was conducted in 87 patients, with a mean age of 62 years, presenting with a history of AF for 72 hours to a maximum of 3 years. After restoration of sinus rhythm, in order for the subjects to be included in the study, echocardiography had to reveal a left ventricular shortening fraction of more than 20%. Patients were followed for one year by clinical examination, ECG and 24-hour Holter monitoring performed 7 days after inclusion, then after 3, 6, 9 and 12 months. The two groups, treated with either cibenzoline (n = 40) or hydroquinidine (n = 44), were comparable. The AF recurrence rates with cibenzoline or hydroquinidine were 34.9% had 36.4% at 6 months, and 41.9% and 43.2% at 12 months, respectively (NS). Most recurrences occurred during the first month. Adverse effects were reported in 10 patients (23.3%) with cibenzoline and 12 patients (27.3%) with hydroquinidine. They led to discontinuation of treatment in 6 patients (14%) treated with cibenzoline and 5 patients (11.4%) treated with hydroquinidine. Serious adverse events included one death from hypoglycaemic coma and one case of persistent ventricular tachycardia with hydroquinidine. In conclusion, oral cibenzoline demonstrated the same antiarrhythmic activity as hydroquinidine in the long-term prevention of recurrent atrial fibrillation, with a similar degree of safety. This drug can therefore constitute an alternative to conventional antiarrhythmics in this context.
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