シストリック心不全と比較した孤立したダイアストリック心不全の病理生理学的特徴
Dalane W Kitzman1, William C Little, Peter H Brubaker
1Section of Cardiology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157-1045. dkitzman@wfubmc.edu
JAMA
|November 7, 2002
まとめ
高齢者のダイアストリック心不全 (DHF) は,心不全 (SHF) に類似した運動能力の低下,神経内分泌の活性化,生活の質の低下を示します. これらの発見は,DHFがSHFと重要な病理生理学的特性を共有することを示唆しています.
科学分野:
- 心臓病学 心臓病学
- ゲリアトリクス ゲリアトリクス
- 心不全 病理生理学 心不全 病理生理学
背景:
- 閉塞性心不全の高齢患者は,左心室排泄分数 (LVEF) が保存されていることが多い.
- ディアストリック心不全 (DHF) の病理生理学は依然として十分に理解されていないため,真の心不全としての分類が疑問視されています.
研究 の 目的:
- DHFの疑いのある高齢患者の主要な病理生理学領域を体系的に評価する.
- DHFの発見を,同年齢の健康なボランティアと,古典的な心筋梗塞 (SHF) の患者と比較する.
主な方法:
- 60歳以上の147人の被験者を対象とした観察的臨床試験.
- 参加者の中には,孤立したDHFを患った59人,SHFを患った60人,そして28人の健康な対照群が含まれていました.
- 左心室の構造/機能,運動能力,神経内分泌機能,生活の質を評価した.
主要な成果:
- DHF患者は,対照群およびSHF患者と比較して,左心室質量体積比の増加を示しました.
- DHFとSHFの両グループは,対照群と比較して,ピーク酸素消費量と呼吸器無酸素値の低下を示した.
- ノルエピネフリンと脳ナトリウレチンペプチドのレベルが上昇したのは,対照群と比較して,DHFおよびSHF群で観察された.
結論:
- 隔離されたDHF患者は,運動能力の低下と神経内分泌の活性化を含む,SHFに類似する病理生理学的特徴を示します.
- 生活の質は,SHF患者と比較して,DHF患者で著しく低下しています.
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