由肺静脉内发生的激活引起的阵发性心房颤动的维持机制:使用非接触测绘分析。

IF 1.4 4区 医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS
Hiroshige Yamabe, Toshiya Soejima, Yurie Fukami, Kazuki Haraguchi, Taichi Okonogi, Keisuke Hirai, Ryota Fukuoka, Kyoko Umeji, Yoshiya Orita, Hisashi Koga, Tomohiro Kawasaki
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The number of pivoting activations, wave breaks, and fusions over CFAE areas were significantly higher than those over non-CFE areas (25.5 ± 9.3 vs. 4.5 ± 4.8 times/s, p < 0.0001; 9.1 ± 5.3 vs. 1.4 ± 1.8 times/s, p < 0.0001; 13.0 ± 4.6 vs. 5.4 ± 4.4 times/s, p < 0.0001). The conduction velocities in CFAE areas were significantly slower than in non-CFAE areas (0.6 ± 0.2 vs. 1.7 ± 0.8 m/s, p < 0.001). After delivery of ablation lesions around the left-sided PVs (13.2 ± 7.4 applications), the PV activation became organized with a loss of CFAE areas, and the frequency of the LSPV's pivoting activation, wave break, and fusion significantly decreased compared to that pre-ablation (7.3 ± 10.9 vs. 30.0 ± 11.6 times/s, p < 0.001; 2.1 ± 5.3 vs. 10.5 ± 6.2 times/s, p < 0.002; 6.0 ± 6.6 vs. 18.4 ± 8.2 times/s, p < 0.001). Subsequently, AF terminated before the left-sided PV isolation in all patients. 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引用次数: 0

摘要

目前尚不清楚肺静脉(pv)如何维持阵发性心房颤动(AF)。为了明确PV在心律失常中的作用,我们检测了阵发性房颤期间PV的激活序列。在13例阵发性房颤患者右PV分离后,进行了左上PV (LSPV)心内膜非接触定位。分析左侧pv消融前和消融过程中LSPV内的激活序列,并将复杂分割心房电图(CFAE)区域与非CFAE区域的激活序列进行比较。在LSPV近半区观察到cfae;8.8±3.2cm m2),占LSPV的19.9±6.0%。CFAE区域的旋转激活、波断和融合次数明显高于非cfe区域(25.5±9.3次/秒vs 4.5±4.8次/秒,p
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Maintenance mechanism of paroxysmal atrial fibrillation from the activation occurring within the pulmonary vein: analysis using non-contact mapping.

It is unclear how pulmonary veins (PVs) maintain paroxysmal atrial fibrillation (AF). To clarify the PV's arrhythmogenic role, we examined PV activation sequences during paroxysmal AF. Left superior PV (LSPV) endocardial non-contact mapping was performed after a right PV isolation in 13 paroxysmal AF patients. Activation sequences within the LSPV before and during left-sided PVs ablation were analyzed, and those in complex fractionated atrial electrogram (CFAE) areas were compared with those in non-CFAE areas. CFAEs were observed in the LSPV's proximal half (area; 8.8 ± 3.2cm2) occupying 19.9 ± 6.0% of LSPV. The number of pivoting activations, wave breaks, and fusions over CFAE areas were significantly higher than those over non-CFE areas (25.5 ± 9.3 vs. 4.5 ± 4.8 times/s, p < 0.0001; 9.1 ± 5.3 vs. 1.4 ± 1.8 times/s, p < 0.0001; 13.0 ± 4.6 vs. 5.4 ± 4.4 times/s, p < 0.0001). The conduction velocities in CFAE areas were significantly slower than in non-CFAE areas (0.6 ± 0.2 vs. 1.7 ± 0.8 m/s, p < 0.001). After delivery of ablation lesions around the left-sided PVs (13.2 ± 7.4 applications), the PV activation became organized with a loss of CFAE areas, and the frequency of the LSPV's pivoting activation, wave break, and fusion significantly decreased compared to that pre-ablation (7.3 ± 10.9 vs. 30.0 ± 11.6 times/s, p < 0.001; 2.1 ± 5.3 vs. 10.5 ± 6.2 times/s, p < 0.002; 6.0 ± 6.6 vs. 18.4 ± 8.2 times/s, p < 0.001). Subsequently, AF terminated before the left-sided PV isolation in all patients. In conclusion, high-frequency random reentry associated with pivoting activation, wave break, and fusion within the LSPV, observed mostly over CFAE areas, maintained AF. Linear ablation lesions around the PV suppressed random reentry, resulting in the loss of CFAEs and AF termination.

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来源期刊
Heart and Vessels
Heart and Vessels 医学-外周血管病
CiteScore
3.10
自引率
13.30%
发文量
211
审稿时长
2 months
期刊介绍: Heart and Vessels is an English-language journal that provides a forum of original ideas, excellent methods, and fascinating techniques on cardiovascular disease fields. All papers submitted for publication are evaluated only with regard to scientific quality and relevance to the heart and vessels. Contributions from those engaged in practical medicine, as well as from those involved in basic research, are welcomed.
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