まとめ
運動によって引き起こされるR波の増加は,複数のECG導線 (エプシロンR) に渡って,STセグメントの変化と組み合わせて,冠動脈疾患を強く示す. この発見は,epsilon R Rを強調しています.
科学分野:
- 心臓病学 心臓病学
- 診断用イメージング
- 運動生理学 運動生理学
背景:
- 胸痛症候群は,正確な診断を必要とする一般的な臨床症状です.
- 運動心電図 (ECG) は,冠動脈疾患 (CAD) を評価するための標準的なツールです.
- 運動中の特定のEKGの変化,特にQRSの変化の診断的有用性は,さらなる解明を必要としています.
研究 の 目的:
- 冠動脈疾患の運動誘発多線QRS変化 (エプシロンR) の診断精度を評価する.
- 血液動力学的意義と左心室機能との相関を決定する.
- エプシロンRの診断収量と従来のSTセグメントの変化を比較する.
主な方法:
- 胸痛症候群の230人の患者を対象に,ブルース・プロトコルによる運動テストを行った.
- 複数のリード (エプシロンR) とSTセグメントの偏差におけるR波の増加のためのエクササイズEKGの分析.
- ECGの結果と冠動脈動脈検査の結果,左心室機能 (終盤動脈圧,アシナジー,エジェクション分数),運動パラメータとの相関.
主要な成果:
- エプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化>1mmのエプシロンR+STセグメントの変化
- エプシロンRおよびST変異の患者の85%が多血管冠動脈疾患を持っていた.
- 増加したエプシロンRは,STの変化に関係なく,異常な左心室末端ダイアストリック圧力,休息時のアシンergi,および減少したエジェクション分数と相関する.
結論:
- 運動誘発のエプシロンRは,特にSTセグメントの変化と組み合わせると,冠動脈疾患を診断するための非常に敏感なマーカーです.
- 運動中のエプシロンRの存在は,左心室機能障害と血液動力学的異常と関連しています.
- エプシロンRは,冠動脈疾患の患者の左心室の根本的な機能不全を反映している可能性があります.
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