心臓サルコイドーシス患者における予後予測のための追加のEKG指標の有用性
Junichi Kamoshida1, Kohei Ishibashi2, Takanori Kawabata3
1Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Centre, Suita, Japan; Department of Cardiology, Tokyo Medical University, Nishi-shinjuku, Tokyo, Japan.
JACC. Clinical electrophysiology
|August 28, 2025
まとめ
T波のピークから終了までの高 (Tp-e) / QT比率と断片化されたQRS複合体 (fQRS) は,心筋硬化症 (CS) 患者における不良の予後と不律のリスクを予測する. これらのECGマーカーは,発射分子が保存されている患者でも,早期のリスク分層化に有用です.
科学分野:
- 心臓病科
- 電気生理学
- サルコイドーシス 研究
背景:
- 心臓サルコイドーシス (CS) は,心室リポラライゼーションとデポラライゼーションが変化する.
- T波のピークと終点 (Tp-e) /QT比と断片化されたQRS複合体 (fQRS) は,電気異常のマーカーとして知られています.
- CS患者におけるその予後的意義は,まだ完全には理解されていない.
研究 の 目的:
- 日本のCS患者におけるTp- e/ QT比,fQRSの存在,および予後との関連性を評価する.
- これらのECGマーカーの予測的価値を評価する.
主な方法:
- 全国規模のCS調査データ (2014年−2016年) を利用した多中心の遡及コホート研究.
- 患者は,Tp- e/ QT比 (カットオフ値: 0. 232) とfQRSの存在に基づいて分類された.
- 主要アウトカムには全因死亡率と心房不律症が含まれ,次要アウトカムは心臓死亡率と心房不律症に焦点を当てた.
主要な成果:
- 高いTp- e/ QT比とfQRSの存在は,227人のCS患者で予後が悪いと相関していた.
- 多変量分析により,高いTp-e/ QT (HR: 3.01) とfQRS (HR: 2.48) が有害な結果の独立予測要因として特定されました.
- これらのEKGマーカーは,左心房エジェクション分数 (LVEF) > 35% (Tp- e/ QT > 0. 232: HR: 3. 62; fQRS: HR: 3. 38) の患者でも有意な予測指標であった.
結論:
- Tp- e/ QT比の上昇とfQRSの存在は,CS患者の予後が悪いことを示している.
- これらの発見は,LVEFが保存されたCS患者でも,初期段階の不律性リスクの評価において特に重要である.
- この研究は,Tp-e/QTとfQRSがCSにおけるリスク層分化の有用性を強調しています.
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