Efficacy of Additional Radiofrequency Applications for Spontaneous Dissociated Pulmonary Vein Activity After Pulmonary Vein Isolation in Patients with Paroxysmal Atrial Fibrillation
Version of Record online: 18 APR 2013
© 2013 Wiley Periodicals, Inc.
Journal of Cardiovascular Electrophysiology
Volume 24, Issue 8, pages 894–901, August 2013
How to Cite
DOi, A., SATOMI, K., MAKIMOTO, H., YOKOYAMA, T., YAMADA, Y., OKAMURA, H., NODA, T., AIBA, T., AIHARA, N., YASUDA, S., OGAWA, H., KAMAKURA, S. and SHIMIZU, W. (2013), Efficacy of Additional Radiofrequency Applications for Spontaneous Dissociated Pulmonary Vein Activity After Pulmonary Vein Isolation in Patients with Paroxysmal Atrial Fibrillation. Journal of Cardiovascular Electrophysiology, 24: 894–901. doi: 10.1111/jce.12153
- Issue online: 22 JUL 2013
- Version of Record online: 18 APR 2013
- Accepted manuscript online: 25 MAR 2013 08:59PM EST
- Manuscript Accepted: 8 MAR 2013
- Manuscript Revised: 7 MAR 2013
- Manuscript Received: 5 JAN 2013
- atrial fibrillation;
- catheter ablation;
- dissociated pulmonary vein activity;
- pulmonary vein isolation;
- PVI automaticity
Radiofrequency Applications for Spontaneous Dissociated Pulmonary Vein Activity
The aim is to evaluate the efficacy of additional radiofrequency ablation (RFCA) for spontaneous dissociated pulmonary vein activity (DPV-spike) after PV isolation (PVI) in patients with paroxysmal atrial fibrillation (AF).
One hundred fifty-two consecutive patients with paroxysmal AF referred for RFCA were enrolled. When DPV-spike was documented after PVI, we randomly assigned these patients to receive additional RFCA for DPV-spike or only PVI. We divided them into 4 groups: 87 patients without DPV-spike after PVI (No-spike group), 31 without DPV-spike after additional RFCA (Successful group), 8 with remaining DPV-spike after additional RFCA (Unsuccessful group), and 26 with DPV-spike after only PVI (Spike group). AF recurrence was evaluated among the 4 groups.
After PVI, DPV-spike was documented in 87 PVs (14%) from 65 patients. During 16 ± 9 months of follow-up, the incidence of the freedom from AF was significantly higher in the No-spike group than that in the Spike group and Unsuccessful group (P < 0.05), and tended to be higher in the Successful group than that in the Spike group and Unsuccessful group (P = 0.08 and 0.11, respectively). In a multivariate analysis, the remaining PV-spike after ablation was an independent predictor of AF recurrence (HR 2.44; CI 1.10–5.43, P < 0.05). No major complications including PV stenosis were observed during the follow-up.
DPV-spike after PVI may be associated with higher electrical activity within the PVs and may be one of the risk factors for AF recurrence. Additional RFCA for DPV-spike was effective to reduce the AF recurrence after PVI.