What is the role of IC antiarrhythmic agents in the treatment of atrial flutter (AFL)?

Updated: Nov 18, 2019
  • Author: Lawrence Rosenthal, MD, PhD, FACC, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Large single oral doses of type IC antiarrhythmic agents (eg, propafenone 450-600 mg, flecainide 200-300 mg) have also been shown to be effective in converting recent-onset atrial fibrillation to sinus rhythm. [21] Their use in atrial flutter can be assumed to have at least equal success. Giving antiarrhythmic medications before electrical cardioversion has been shown to improve the rate of conversion to sinus rhythm. Concurrent treatment with beta blockers or calcium channel blockers is suggested when oral type IC agents are used.

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