ヘミブロックは再検討された
Marcelo V Elizari1, Rafael S Acunzo, Marcela Ferreiro
1Division of Cardiology, Ramos Mejía Hospital, Urquiza 609, Buenos Aires C1221ADC, Argentina. elizarimv@fibertel.com.ar
Circulation
|March 7, 2007
まとめ
この研究は,冠動脈疾患と高血圧において一般的な左前後半球閉塞の診断基準を再定義しています. ヘミブロックの理解は,心電図の正確な解釈と患者の予後のために不可欠です.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 医療診断 医療診断
背景:
- 静脈内伝導システムの三筋状の性質とヘミブロックの概念は1968年に確立されました.
- ヘミブロックの初期記述以来,限られた進歩がみられた.
研究 の 目的:
- 左前後半球の信頼性の高い心電図およびベクトル心電図診断基準をレビューし,再定義する.
- ヘミブロックは,心筋梗塞,イシュケミア,心室縮の診断における課題を強調する.
主な方法:
- 既存の解剖学,病理学,電気生理学,臨床研究のレビュー.
- エレクトロカルディオグラフィとベクトルカルディオグラフィの分析.
- 例示的な症例と疫学データの提示.
主要な成果:
- 左前半球閉塞は,男性や高齢者に多く見られ,しばしば冠動脈疾患や高血圧に関連しています.
- 孤立した左前半球ブロックは,構造的な心臓病のない個体でも発生することがあります.
- 孤立した左後半球閉塞はまれで,しばしば右束枝閉塞と関連しており,深刻な予後を伴う.
結論:
- ヘミブロックの正確な診断は,心電図の誤った解釈を避けるために不可欠です.
- 冠動脈疾患と高血圧は,ヘミブロックの主要な原因です.
- 右のバンドル・ブランチ・ブロックと関連した左側後部ヘミブロックは,心房静脈閉塞およびアダムズ・ストークス発作のリスクが高いことを示している.
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