Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
Arrhythmia/Electrophysiology
Right Atrial Anatomical Remodeling Affects Early Outcomes of Nonvalvular Atrial Fibrillation After Radiofrequency Ablation
Jeonggeun MoonYoo Jin HongJaemin ShimHye-Jin HwangJong-Youn KimHui-Nam PakMoon-Hyoung LeeBoyoung Joung
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Volume 76 (2012) Issue 4 Pages 860-867

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Abstract

Background: The impact of the right atrial (RA) anatomical remodeling on outcomes of atrial fibrillation (AF) after radiofrequency ablation (RFA) is unclear. Methods and 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±22ml/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±19ml/m2, P=0.23). Notably, RAVI was the only independent predictor of early recurrence (for each 10ml/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. (Circ J 2012; 76: 860-867)

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© 2012 THE JAPANESE CIRCULATION SOCIETY
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