トランスキャテータによる大動脈弁置換手術を受けた重度の大動脈狭窄症患者の併発性ミトラル吐の進化: 多センターの中国- DVD2コホート研究
Xiao-Han Zhao1, Rui-Sheng Zhang1, Peng Li2
1Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
Cardiology journal
|September 4, 2025
まとめ
トランスキャテーターによる大動脈弁置換 (TAVR) は重度の大動脈狭窄症の患者でミトラル吐 (MR) を有意に改善します. TAVR後のMRの改善は,よりよい機能的クラスと改善の傾向と相関する.
科学分野:
- 心臓病科
- 介入心臓科
- バルブ性心臓病
背景:
- 重度の大動脈狭窄症 (AS) はしばしばミトラル吐 (MR) と共存する.
- トランスキャテーター大動脈弁置換 (TAVR) の後のMRの進化を理解することは,患者の管理に極めて重要です.
研究 の 目的:
- 重度の大動脈狭窄症 (AS) のトランスキャセター大動脈弁置換手術 (TAVR) を受けている患者における大動脈回 (MR) の有意な進化を評価する.
主な方法:
- 多センターコホート研究 (China- DVD2) には,ASのTAVRを施した424人の患者が登録されました.
- ミトラル反発症 (MR) の重症度は,ベースラインとTAVRの12ヶ月後に評価された.
- 総合的なエンドポイントには,全原因による死亡,心不全再入院,心筋梗塞,および胸痛が含まれていた.
主要な成果:
- 発症した患者130人のうち,70%が12ヶ月で改善を示した.
- 左心室射出分数 (LVEF) の改善は,MRの改善と関連していました (OR: 0. 97, p=0. 04).
- MR改善の患者は,NYHA機能クラスの有意な改善と,より低い複合エンドポイント率の傾向を示した.
結論:
- トランスキャテーター大動脈弁置換 (TAVR) は,重度の大動脈狭窄症 (AS) が併存しているほとんどの患者において,ミトラル反吐 (MR) の有意な改善につながります.
- ベースラインで有意なMRはより悪い結果を予測しなかったが,MRの改善はよりよい予後につながる傾向があった.
- 高齢と肺動脈シストリック圧 (SPAP) の上昇は,有害な結果の予測要因でした.
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