Abstract
Evaluation of efficacy of intravenous flecainide to revert supraventricular arrhythmias to sinus rhythm in patients with respiratory insufficiency. Comparative randomized prospective trial. ICU in a University Hospital. 30 patients with acute respiratory insufficiency or acute exacerbation of chronic respiratory insufficiency and supraventricular arrhythmias. Intravenous flecainide was administered to 15 patients (Group A) (2 mg/kg for 10 min and continuous perfusion of 1.5 mg/kg for 1 h). Intravenous verapamil was administered to 15 patients (Group B) (0.15 mg/kg for 5 min and continuous perfusion of 0.005 mg/kg/min for 1 h). The categories of patients' arrhythmias were: Group A-atrial fibrillation (AF) in 5 cases, atrial flutter (AFl) in 2, multifocal atrial tachycardia (MAT) in 4 and other supraventricular tachycardia (SVT) in 4. Group B-AF in 6 cases, AFL in 2, MAT in 2 and SVT in 5 cases. Flecainide reverted arrhythmias to sinus rhythm in 12 out of 15 cases (80%); of these 12, 11 reverted with the initial bolus. Verapamil reverted 5 out of 12 cases (33.3%, p < 0.01). No significant secondary adverse effects were detected. Intravenous flecainide is an effective antiarrhythmic drug to treat acute supraventricular arrhythmias in patients with respiratory insufficiency.
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