右心房と左心房の振動の表面心電図の特徴
Andres Bochoeyer1, Yanfei Yang, Jie Cheng
1Cardiovascular Research Institute and Section of Cardiac Electrophysiology, University of California, San Francisco 94143-1354, USA.
Circulation
|July 2, 2003
まとめ
非キャボトリクスピッド・イストムス (CTI) に依存する心房振動 (AFL) の表面EKGパターンについて説明します. いくつかの右心房 (RA) 振動パターンはCTI依存性であり,上環の再入力は時計回りの方向にCTI AFLを模倣する.
科学分野:
- 電気生理学 電気生理学
- 心臓病学 心臓病学
- メディカルイマージング (医学イメージング)
背景:
- 表面心電図 (ECG) 特性についての理解は限られているが,CTIに依存しない右心房 (RA) と左心房 (LA) のフラッター回路については限られている.
- さまざまな心房 flutter (AFL) メカニズムを区別するためのより明確な診断基準の必要性.
研究 の 目的:
- CTIに依存しないRAとLAのフラッター回路に関連した表面EKGパターンの調査と特徴づけ.
- これらのパターンを,既知のCTI依存型AFL (反時計方向 [CCW] と時計方向 [CW]) と比較して,特徴を識別する.
主な方法:
- アチピカルなRAフラッターの32回のエピソードと,それぞれ26人と21人の患者のLAフラッターの22回のエピソードの遡及的分析.
- 特定のフラッター回路 (下回路再入,上回路再入,隔膜,その他のLA回路) に関して,活性化シーケンスやリードの偏移を含む表面EKGの特徴の評価.
主要な成果:
- Lower-loop reentry RA flutterは,CCW CTI AFLと同様のECGパターンを示したが,下位リードでは端末力が減少した.
- 上回線再入場RAフラッター (7/8エピソード) はCW CTI AFLを模倣した.
- LA隔膜回路 (11人の患者) は,顕著なV1力と他の場所での平らな傾きを示した.
- 他のLA回路 (11人の患者) は,CCW CTI AFLと比較して,下位リード電圧が低下した変数パターンを持っていた.
結論:
- CCWまたはCW CTI AFLと異なる右心房のパターンは,それでもCTIに依存している可能性があります.
- アッパー・ループの再入力は,一貫したCW CTI AFL表面パターンを示し,CTIに依存していない.
- 左心房フラッター回路は,通常,平坦または低幅の劣ったリード力を示す.
さらに関連する動画
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Parts of an ECG
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