Implications of Time Interval from Atrial Fibrillation Ablation to Early Recurrence on Incidence of Late Recurrence
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概要
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<B>Background:</B> We have reported that “36 days” was an optimal length of blanking period after ablation procedures for persistent atrial fibrillation (AF). We tested the efficacy of the 36-day blanking period in reporting the post-ablation follow-up outcomes after the initial ablation procedure for persistent AF.<BR><B>Methods:</B> Consecutive 206 patients (age: 62±9 years) with persistent AF (AF duration: 7±85 months, LA diameter: 47±5 mm) underwent the initial ablation procedure for the anatomical bi-atrial linear ablation after the encircling PV isolation. An early and late recurrences were defined as a documented episode of AF or atrial tachycardia (AT) within and more than two months after the initial ablation procedure, respectively. The patients were classified into 3 groups: Group-1: no early recurrence (n=91), Group-2: early recurrences within 36-post-ablation days (PAD) (n=80) and Group-3: early recurrences after 36-PAD (n=35).<BR><B>Results:</B> The AF duration was longer and LA diameter was larger in Group-3 than in Groups-1 and 2 (P<0.05). Kaplan-Meier analysis revealed significant differences in the long-term freedom from late recurrences between Group-1 vs. Group-2, Group-1 vs. Group-3, and Group-2 vs. Group-3 (P<0.003 for each pairs). In multivariate analysis, both the AF duration and LA diameter were the independent predictors of an early recurrence after 36-PAD (P<0.05).<BR><B>Conclusions:</B> Patients without any early recurrences and those with early recurrences within 36-PAD showed significantly better follow-up outcomes than those with early recurrences after 36-PAD.
著者
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Iesaka Yoshito
Tsuchiura Kyodo General Hospital
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Komatsu Yuki
Tsuchiura Kyodo Hospital
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Hishikari Keiichi
Tsuchiura Kyodo Hospital
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Taniguchi Hiroshi
Tsuchiura Kyodo Hospital
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Kusa Shigeki
Tsuchiura Kyodo Hospital
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Takayama Kei
Tsuchiura Kyodo Hospital
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Uchiyama Takashi
Tsuchiura Kyodo Hospital
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Otomo Kiyoshi
Tsuchiura Kyodo Hospital
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IESAKA Yoshito
Tsuchiura Kyndo General Hospital
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