Author + information
- Yang Fangfang,
- Yangbo Xing,
- Chao Xu,
- Zhansheng Xiao,
- Fang Peng,
- Yufang Qiu and
- Hangyuan Guo
To discuss the efficacy between pulmonary vein antral isolation(PVAI) plus high density left atrial voltage mapping(HDVM) and pulmonary vein isolation on paroxysmal atrial fibrillation(PAF).
A total of 60 patients with paroxysmal atrial fibrillation underwent radioablation in our department from Januray 2012 to Januray 2014, all cases were divided into two groups: 30 patients in group A underwent PVAI, 30 patients in group B underwent PVAI+ HDVM, all guided by Ensite Velocity System. Atrial arrthymic data including atrial premature, atrial tachycardia, atrial flutter, atrial fibrillation were collected by routine electrocardiogram(ECG) and 24h-Holter every month during 1-year post-operation follow-ups. Ablation recurrence was defined as any atrial arrthymic events(atrial tachycardia, atrial flutter, atrial fibrillation) persisting for more that 30 seconds by ECG and/or 24h-Holter 3-month after ablation.
60 cases of PVAI were operated successfully. Low-voltage zones(LVZs) were located on right superior pulmonary vein outside antrum in 7 cases, right inferior pulmonary vein outside in 3 cases, left anterosuperior wall in 6 cases, left anteroinferior wall in 9 cases, roof in 3 cases, upper-posterior wall in 2 cases. 1-year atrial fibrillation ablation success rate were at the same level(83.3% vs 80.0%, p>0.05). No difference were found in 3-month atrial arrthymic recurrences between two groups statistically(43.1% vs 40.7% at 1st month, 20.7% vs 21.3% at 2nd month, 21.3% vs 20.2% at 3rd month, p>0.05).
Combination of pulmonary vein isolation with high density left atrial voltage mapping cannot improve ablation success rate of paroxysmal atrial fibrillation and increase the recurrence of atrial arrthymias.