title: Right atrial anatomical remodeling affects early outcomes of nonvalvular atrial fibrillation after radiofrequency ablation.
abstract: BACKGROUND
  The impact of the right atrial (RA) anatomical remodeling on outcomes of atrial fibrillation (AF) after radiofrequency ablation (RFA) is unclear.
  
  
  RESULTS
  Sixty-three patients (50 men, 57±10 years, 23 persistent AF [PeAF]) who underwent RFA for AF were enrolled. Both RA and left atrial (LA) volumes, measured with multidetector computed tomography, as well as echocardiographic parameters were compared between subjects with early (<3 months, n=13) or 1-year (n=19) recurrence after RFA and without recurrence. The RA volume index (RAVI) was larger (98±21 vs. 77±22 ml/m²) and PeAF was more common (62% vs. 30%) in the early recurrence group (P<0.05 for all), whereas the LA volume index (LAVI) was similar between the 2 groups (78±15 vs. 72±19 ml/m², P=0.23). Notably, RAVI was the only independent predictor of early recurrence (for each 10 ml/m² increase, OR: 1.650, 95%CI: 1.017-2.677, P=0.04). PeAF was the only independent predictor of 1-year recurrence after RFA (OR: 4.496, 95%CI: 1.110-18.211, P=0.04), whereas RAVI and LAVI were not.
  
  
  CONCLUSIONS
  RA anatomical remodeling might affect the early recurrence of AF after RFA. However, the chronicity of AF, rather than RA and LA anatomical remodeling, is a determinant of 1-year recurrence of AF after RFA.
authors.affiliation: Cardiology Division, Department of Internal Medicine, Gachon University of Medicine and Science, Incheon, Republic of Korea.
authors.forename: Jeonggeun
authors.initials: J
authors.lastname: Moon
authors.forename: Yoo Jin
authors.initials: YJ
authors.lastname: Hong
authors.forename: Jaemin
authors.initials: J
authors.lastname: Shim
authors.forename: Hye-Jin
authors.initials: HJ
authors.lastname: Hwang
authors.forename: Jong-Youn
authors.initials: JY
authors.lastname: Kim
authors.forename: Hui-Nam
authors.initials: HN
authors.lastname: Pak
authors.forename: Moon-Hyoung
authors.initials: MH
authors.lastname: Lee
authors.forename: Boyoung
authors.initials: B
authors.lastname: Joung
mesh_terms: D000328:Adult; D000368:Aged; D001281:Atrial Fibrillation / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D017115:Catheter Ablation; D016009:Chi-Square Distribution; D002908:Chronic Disease; D004452:Echocardiography; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006325:Heart Atria / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011237:Predictive Value of Tests; D012008:Recurrence; D056910:Republic of Korea; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome