What is the efficacy of radiofrequency ablation (RFA) for the treatment of atypical 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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Success depends on localizing the circuit and creating a line of block that includes an electrically inert anatomic structure (ie, the mitral valve annulus). Although the success rate should approach 95%, recurrence is more common than with typical atrial flutter and may also necessitate the use of antiarrhythmic agents for suppression. Patients undergoing catheter-based ablation for atrial fibrillation can develop atypical left atrial flutter or macroreentrant left atrial tachycardias, which can be challenging to map and ablate.

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