How does ablation treat paroxysmal atrial fibrillation (Afib) (AF)?

Updated: Nov 18, 2019
  • Author: Lawrence Rosenthal, MD, PhD, FACC, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Paroxysmal AF is usually caused by triggered and ectopic activity in pulmonary veins, and ablation around the veins terminates the arrhythmia. In persistent AF, triggering foci and reentry circuits may coexist in the atrial tissue, requiring more extensive mapping and ablation to terminate the AF; this yields a lower success rate than ablation used to treat paroxysmal AF.

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