Radiofrequency catheter ablation of XXXX : procedural success and long-term outcome.

@entity1 @entity296 @entity591 @entity956 @entity943
The objective of this study was to describe the procedural success and clinical recurrences after radiofrequency catheter ablation of @entity956 . A deflectable catheter with a 4 or 5 mm tip was positioned in the posterior right atrium. Radiofrequency energy was delivered sequentially from the tricuspid annulus to the inferior vena cava. Catheter ablation during 18 sessions for 16 @entity1 resulted in abrupt @entity956 and noninducibility in all @entity1 . Successful sites were near the os of the coronary sinus but had no distinguishing electrographic features. During a follow-up period of 8 +/- 5 months, 4 (25%) @entity1 had recurrence of @entity956 ; 3 of 4 underwent successful repeat ablation. By actuarial analysis, 87% of @entity1 remained in normal sinus rhythm 6 months after the initial procedure. The only distinguishing feature of those with recurrence compared with those whose sinus rhythm was maintained was the induction of nonclinical @entity943 (50% vs 0%, respectively; p < 0.05). One @entity1 had resolution of presumed @entity591 -related @entity296 . Catheter ablation by an anatomic approach was highly successful in terminating type 1 @entity956 and was associated with good long-term response. This technique may represent a meaningful alternative for restoration and maintenance of normal sinus rhythm. However, further investigation is warranted to define its clinical role fully.
