重度の大動脈狭窄および左心室縮を有する無症状患者の大動脈弁置換と死亡率
Jason H Wasfy1, Muhammad Etiwy2, Yunong Zhao1
1Heart and Vascular Institute and Department of Medicine, Mass General Brigham, Harvard Medical School, 55 Fruit Street, Boston, Massachusetts, 02138, USA.
まとめ
重度の無症状大動脈狭窄症 (AS) のエジェクション分数および左心房縮症 (LVH) の場合,大動脈弁置換 (AVR) は死亡率の低下と関連しています. この発見は,これらの患者の早期AVRを検討することを示唆しています.
科学分野:
- 心血管医学
- 心臓 外科
- エコカルディオグラフィー
背景:
- 症状のない重度の大動脈狭窄症 (AS) の場合,大動脈弁置換 (AVR) の指示は,左心室噴出分数 (LVEF) に基づいて異なります.
- 左心室高縮 (LVH) は,心室損傷を示し,LVEFが保存された場合でも,早期のAVRの必要性を示唆します.
研究 の 目的:
- 症状のない重症AS,保存されたLVEF,およびLVHの患者におけるAVRと死亡率の関連性を調査する.
- 症状のない重症ASにおける介入の優先順位を決める潜在的なマーカーとしてLVHを評価する.
主な方法:
- AS,LVEF,LVHを特定するために,自然言語処理を120万件以上利用しました.
- 死亡率とAVRの記録とエコーカルディオグラフィのデータをリンクし,確認のためにマニュアルチャートレビューを行った.
- AVRと死亡率の間の時間依存関係を評価するためにコックスの比例リスクモデルを使用した.
主要な成果:
- この研究では,重度のAS,保存されたLVEF (≥55%) とLVHの確認された無症状の個体607人が参加しました.
- AVRは,時間依存の治療状態を調整した後の死亡率の減少と有意に関連していた (危険比0. 37; P < 0. 0001).
結論:
- AVRは,重症無症状AS,保存されたLVEF,およびLVHの患者の死亡率の低下と関連しています.
- LVHは容易に評価可能なマーカーであり,症状のない重症AS患者のAVRの優先順位を決めるのに役立ちます.
- LVHと重症ASの無症状の個体では,より積極的なAVRを検討することを支持しています.
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