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Radiofrequency catheter ablation of type 1 atrial flutter using large-tip 8- or 10-mm electrode catheters and a high-output radiofrequency energy generator

Results of a multicenter safety and efficacy study

Gregory Feld, MD^*,*, Marcus Wharton, MD, Vance Plumb, MD, Emile Daoud, MD, Ted Friehling, MD^||, Laurence Epstein, MD^¶ EPT-1000 XP Cardiac Ablation System Investigators¹

^* University of California, San Diego, California, USA
Duke University, Durham, North Carolina, USA
University of Alabama, Birmingham, Alabama, USA
Grant Riverside Hospital, Columbus, Ohio, USA
^|| Inova Fairfax Hospital, Falls Church, Virginia, USA
^¶ Brigham and Women's Hospital, Boston, Massachusetts, USA

View larger version (29K): [in a new window]   Figure 1 Flow diagram showing short- and long-term treatment outcomes of atrial flutter (AFL) ablation with 8- or 10-mm electrode catheters. The follow-up period was six months. Bidirectional isthmus block and no inducible AFL after ablation using only the investigational device. No AFL recurrence reported during six-month follow-up. Anti-arrhythmic drugs required for arrhythmia other than AFL. ||Four deaths occurred during six-month follow-up not related to the procedure. AA = anti-arrhythmic medication for non-AFL rhythms; AFIB = atrial fibrillation.