Tachycardia due to atrial flutter with rapid 1:1 conduction following treatment of atrial fibrillation with flecainide

BMJ : British Medical Journal
Robert TaylorGavin Lloyd


Flecainide can "organise" atrial fibrillation into atrial flutter with 1:1 conduction, leading to cardiovascular compromise. The treatment of atrial fibrillation in the emergency department is often complex and depends on several factors, including time of onset of atrial fibrillation and previously known cardiac disease. Current guidelines include flecainide as a possible treatment for chemical cardioversion and maintaining sinus rhythm in paroxysmal atrial fibrillation.1 2 An important, under-recognised complication of flecainide is the transformation of rhythm from atrial fibrillation to atrial flutter. We present four such cases.


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