Shimane Journal of Medical Science

Shimane University Faculty of Medicine
ISSN :0386-5959(冊子体)
ISSN :2433-2410(オンライン)

クリエイティブ・コモンズ・ライセンス
これらの論文は クリエイティブ・コモンズ 表示 - 非営利 - 改変禁止 4.0 国際 ライセンスの下に提供されています。
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Shimane Journal of Medical Science 31 2
2015-02-01 発行

Cardiac Resynchronization Therapy and Atrioventricular Junction Ablation in a Patient With Heart Failure and Atrial Fibrillation: an Analysis of Activation Imaging

TUMENBAYAR Maidar
Watanabe Nobuhide
菅森 峰
Yamaguchi Kazuto
岡田 大司
中村 琢
Ito Shinpei
安達 和子
中島 龍馬
吉冨 裕之
ファイル
内容記述(抄録等)
Atrioventricular junctional ablation (AVJA) combined with biventricular (BiV) pacing is an effective treatment for atrial fibrillation (AF) and rapid ventricular response associated with heart failure. We report the case of a 64-year-old man with dilated cardiomyopathy and AF who underwent AVJA and BiV pacing. Activation imaging is a recently developed novel imaging technique that uses threedimensional speckle tracking echocardiography, which visualizes the left ventricular (LV) intra-ventricular propagation pattern of regional contractions. After AVJA and BiV pacing therapy, interventricular mechanical activation time (IVAT) quantified as the time difference from the QRS onset to regional activation in the 16 segments decreased from 209 ± 92 msec to 177 ± 88 msec. LV free-wall (basal anterior and lateral wall) IVAT values were shorter than those at baseline. Activation imaging appears to be a feasible technique for assessing LV mechanical dyssynchrony.