title: Long-term efficacy of delayed cure after circumferential pulmonary vein ablation of atrial fibrillation.
abstract: BACKGROUND
  The reliability of delayed cure of early recurrence of atrial fibrillation (ERAF) is still undetermined. Furthermore, the predictors of recurrence after delayed cure of ERAF are less investigated in depth.
  
  
  OBJECTIVE
  The purpose of this study was to investigate the long-term efficacy of delayed cure of ERAF after catheter ablation of AF and explore the he predictors of recurrence after delayed cure of ERAF.
  
  
  RESULTS
  We prospectively studied 300 consecutive patients with atrial fibrillation (AF) who were referred for circumferential pulmonary vein ablation (CPVA). After a follow-up of 19.2 +/- 4.1months, of the 87 patients with early recurrence of AF 41 achieved delayed cure, 11 of them reoccurred AF subsequently. Univariate analysis showed that persistent AF, absence of pulmonary vein (PV) isolation and external cardioversion were related to reoccurrence after delayed cure. Logistic regression analysis identified only absence of PV isolation as a predictor of recurrent AF after delayed cure.
  
  
  CONCLUSIONS
  Delayed cure after CPVA is relatively common and its efficacy at long-term follow-up is reasonably consistent. However, in patients without PV isolation, delayed cure is unstable and the risk of late recurrence is increased.
authors.affiliation: Department of Cardiology, Beijing AnZhen Hospital, Capital Medical University, Beijing, People's Republic of China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Tao
authors.forename: Jianzeng
authors.initials: J
authors.lastname: Dong
authors.forename: Xingpeng
authors.initials: X
authors.lastname: Liu
authors.forename: Deyong
authors.initials: D
authors.lastname: Long
authors.forename: Ronghui
authors.initials: R
authors.lastname: Yu
authors.forename: Ribo
authors.initials: R
authors.lastname: Tang
authors.forename: Bin
authors.initials: B
authors.lastname: Zheng
authors.forename: Ying
authors.initials: Y
authors.lastname: Tian
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.forename: Lisheng
authors.initials: L
authors.lastname: Shi
authors.forename: Hua
authors.initials: H
authors.lastname: He
authors.forename: Changsheng
authors.initials: C
authors.lastname: Ma
mesh_terms: D001281:Atrial Fibrillation / Q000503:physiopathology / Q000601:surgery*; D017115:Catheter Ablation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011667:Pulmonary Veins / Q000503:physiopathology / Q000601:surgery*; D012008:Recurrence; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome