Pre-Procedural Prediction of Termination of Persistent Atrial Fibrillation by Catheter Ablation as an Indicator of Reverse Remodeling of the Left Atrium
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概要
- 論文の詳細を見る
Background: The pre-procedural prediction of atrial fibrillation (AF) termination by catheter ablation in patients with persistent AF has not been evaluated fully. The aim of this study was to evaluate the pre-procedural predictors of persistent AF termination by ablation associated with the possibility of reverse remodeling of the left atrium (LA). Methods and Results: Seventy consecutive patients (mean age, 62±8 years) with persistent or long-standing persistent AF underwent ablation. They were divided into 2 groups: those with AF terminated by ablation (n=14; group 1) and those with AF terminated by cardioversion after ablation (n=56; group 2). The left atrial appendage (LAA) contraction velocity determined on transesophageal echocardiography was significantly decreased in group 2 as compared to group 1 (P<0.001). Kaplan-Meier analysis showed that the group 1 patients had a higher AF-free survival rate than those in group 2 during 12±4.1 months of follow-up (P=0.048). The LA reverse remodeling ratio, given as the volume difference between before and 3 months after ablation in group 1, was significantly greater after ablation than that in group 2 (25.8±13% vs. 15.0±15%, P=0.015). Multivariate logistic regression analysis indicated that the LAA contraction velocity was an independent predictor of persistent AF termination by ablation (P=0.018). Conclusions: The LAA contraction velocity was the only non-invasive pre-procedural predictor of persistent AF termination by ablation, indicating the possibility of reverse remodeling of the LA.
著者
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Yamashita Eiji
Division of Cardiology, Gunma Prefectural Cardiovascular Center
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Kumagai Koji
Division of Cardiology, Gunma Prefectural Cardiovascular Center
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Oshima Shigeru
Division Of Cardiology Gunma Prefectural Cardiovascular Center
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Yamashita Eiji
Division Of Cardiology Gunma Prefectural Cardiovascular Center
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Kumagai Koji
Division Of Cardiology Gunma Prefectural Cardiovascular Center
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Sakamoto Tamotsu
Division Of Cardiology Gunma Prefectural Cardiovascular Center
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Hayano Mamoru
Division Of Cardiology Gunma Prefectural Cardiovascular Center
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NAKAMURA Keijiro
Division of Cardiology, Gunma Prefectural Cardiovascular Center
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