右/左心室の血液プールT2比の減少は,STEMI後に心不全を予測する
Felix Troger1, Mathias Pamminger1, Christina Tiller2
1University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.
まとめ
心臓磁気共鳴画像 (CMR) で測定された右下心室/左心室 (RV/LV) T2比は,STセグメント上昇心筋梗塞 (STEMI) の後の新しい充血性心不全 (CHF) を予測します. この比率は,STEMI後のCHF発達の有価な予後ツールである.
科学分野:
- 心血管画像検査についてです.
- バイオマーカー バイオマーカー
- 心不全に関する研究
背景:
- 心臓磁気共鳴画像 (CMR) でのT2マッピングは,血液の酸素化を評価します.
- RV/LV T2 のリラックス時間差は,心不全における運動能力と相関しています.
- 充血性心不全 (CHF) のSTEMI後のRV/LV T2比の予後値は不明です.
研究 の 目的:
- STセグメント上昇心筋梗塞 (STEMI) の後の新発症性CHFを予測するためのRV/LV T2比の予後的意義を調査する.
主な方法:
- 初めてSTEMIを患った664人の患者は,再循環化後の4日以内にCMRを受けた.
- T2マップを使用して血液プールでRV/LV T2リラクゼーション時間を測定し,RV/LV T2比率を計算した.
- 患者は,新しいCHFの診断を特定するために,平均3.0年間追跡されました.
主要な成果:
- RV/LV T2の比率の中央値は73%であったが,比率<60%は著しく高い割合と早期発症のCHFと関連していた.
- T2比率が低下した患者 (<60%) は高齢で,より大きな心臓発作,より高いNT-proBNP,より低いエジェクション分数,およびより多くのマイクロ血管損傷がありました.
- RV/LV T2比 <60% 独立してSTEMI後のCHFを予測し,NT-proBNPに追加するとリスク予測が改善された.
結論:
- CMR-derived RV/LV T2-ratioは,STEMI後のCHFの予後を評価するためのシンプルで効果的なツールです.
- このイメージングバイオマーカーは,STEMIから回復している患者に貴重な予後情報を提供します.
キーワード:
心臓の磁気共鳴画像検査について閉塞性心不全 閉塞性心不全とは心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (Myocardial Infarction) とは,心筋梗塞 (MyocardialT2マッピング関連する概念動画
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