Catheter Ablation -> Atrial Fibrillation & Atrial Flutter: -> Clinical Trials / Outcomes D-PO03 - Poster Session III (ID 48) Poster

D-PO03-180 - Clinical Significance Of Adenosine Induced Atrial Fibrillation After Pulmonary Vein Ablation (ID 354)


Background: Atrial fibrillation (AF) can be induced by adenosine during catheter ablation of AF. However, the clinical outcome and the effect of additional ablation for triggers of adenosine induced AF (AIAF) is unknown.
Objective: The purpose of this study was to evaluate clinical significance of AIAF.
Methods: From January 2010 to September 2019, 616 consecutive patients with paroxysmal AF who underwent pulmonary vein isolation (PVI) and adenosine test after PVI were analyzed
Results: Among 616 patients, 134 (21.7%) patients showed positive dormant conductions, 34 (5.5%) patients showed AIAF. Among them, 8 (1.2%) patients showed both dormant conductions and AIAF. During mean follow-up of 17.9±18 months, AF recurrence rate was not significantly different between patients with and without AIAF (4/34, 11.7% vs. 107/582, 18.3%, log-rank p=0.536) (Figure). In addition, after additional ablation for trigger site in the AIAF group, AF recurrence was observed in 3/18 (16.6%) patients, which was not significantly different from that of patients in the non-ablation group (1/16, 6.2%, log-rank p=0.789).
Conclusion: AIAF after PVI was not clinically relevant during long term follow-up. Ablation of trigger site of AIAF did not improve clinical outcome.