Practical aspects of rotor mapping in catheter ablation of atrial fibrillation

Research output: Contribution to journalArticle


Historically, pulmonary veins have been the focus of atrial fibrillation (AF) ablation therapy, but it is increasingly being recognized that localized electric rotors and focal impulse sources have a role in maintaining AF. Targeting of these sources using focal impulse and rotor modulation (FIRM)-guided ablation has resulted in elimination of the source and improved long-term outcomes. FIRM uses wide-area mapping of both atria in AF, using commercially-available basket catheters (to provide contact electrograms). However, not all data support the use of FIRM. This paper provides a description of rotor mapping and ablation. In addition, practical strategies for optimizing the technique are discussed, including: catheter positioning; accurate diagnosis of the presence and locations of focal sources; and amount of ablation performed in regions with rotors or foci.

Original languageEnglish (US)
Pages (from-to)39-41
Number of pages3
JournalUS Cardiology Review
Issue number1
StatePublished - Jan 1 2017


  • Atrial fibrillation
  • Catheter ablation
  • Rotor mapping

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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