CMRによる左心房の異常は,肺高血圧患者の左心疾患と関連している
Ben N Schmermund1, Andreas J Rieth1, Matthias Rademann1
1Department of Cardiology, Campus Kerckhoff of the Justus-Liebig-University Giessen, Kerckhoff-Klinik, Bad Nauheim, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Bad Nauheim, Germany.
Circulation. Heart failure
|September 1, 2025
まとめ
左心房張力 (LA Es) 障害は,肺高血圧 (PH) の左心関心を示している. LA Esは,PH患者の運動誘発性左心疾患の検出において,左心室全長ストレンス (GLS) よりも優れている.
科学分野:
- 心臓病科
- 肺高血圧
- 心血管イメージング
背景:
- 肺高血圧 (PH) は,毛細血管前,毛細血管後 (IpcPH),毛細血管前と毛細血管後 (CpcPH) の組み合わせ,運動PHを含む.
- 左心疾患 (LHD) はPHの進行を引き起こし,一般的な併発症です.
- 胸前機能障害は心肺疾患の既知の結果である.
研究 の 目的:
- PHのスペクトル全体で心房機能障害を調査する.
- PH患者におけるLHDの特定における,左心房ストレンス (LA Es) と左心房全長ストレンス (GLS) の診断性能を評価する.
主な方法:
- モノセントリック・レジストリには,右心経カテーテリゼーション (RHC) と心血管磁気共鳴画像 (CMR) を受けた209人の患者が含まれていた.
- 患者は,RHCの発見に基づいてPHサブグループに分類された.
- CMRは心室と心房の体積と変形を評価し,LA総ストレンス (Es) とLV全長ストレンス (GLS) を含む.
主要な成果:
- 他のPH型と正常な血液動力学と比較して,IpcPH (10. 0%) とCpcPH (10. 0%) の中位LAEsは有意に低下した.
- LA EsとGLSは,静止状態のLHD (PCWP ≥15mmHg) を特定するのに良好な性能を示した.
- LA Esは運動によるLHD (PCWP ≥25mmHg) (AUC 0. 79対0. 70,p=0. 039) を特定する上でGLSよりも優れていた.
結論:
- 心房機能障害,特にLAEsの低下は,PH患者におけるLHDの兆候である.
- LA Esは,PHにおける運動誘発性LHDを検出するために,GLSよりも有効なイメージングバイオマーカーです.
- LA菌株分析は,肺高血圧のLHDの早期発見のための有望で革新的なアプローチを提供します.
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