Click on image to view larger version.

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.