Paroxysmal Atrial Fibrillation on Flecainide Therapy.

Abstract Flecainide pill-in-the-pocket therapy is a pharmacologic treatment option for patients with infrequent episodes of symptomatic atrial fibrillation. We report a case of wide complex tachycardia due to atrial flutter with 1:1 atrioventricular conduction in a patient who took pill-in-the-pocket flecainide without concomitant atrioventricular nodalblockade.