慢性心不全における睡眠と運動による定期呼吸: 予後的重要性と相互依存性
Ugo Corrà1, Massimo Pistono, Alessandro Mezzani
1Divisione di Cardiologia, Salvatore Maugeri Foundation, IRCCS, Veruno, Italy. ucorra@fsm.it
Circulation
|December 29, 2005
まとめ
慢性心不全では,運動振動換気 (EOV) と高い無呼吸症-低呼吸症指数 (AHI) が一般的です. EOVとAHIの組み合わせは,死亡率を大幅に予測し,これらの呼吸器疾患の予後的重要性を強調しています.
科学分野:
- 心臓病学 心臓病学
- 肺内科 肺内科 肺内科
- スリープ・メディシン (睡眠医学)
背景:
- 睡眠による呼吸障害と運動による定期呼吸は,慢性心不全 (CHF) で一般的であり,独立して不良の予後と関連しています.
- これらの呼吸器疾患とCHF患者の全体的な予後との関係は不明である.
研究 の 目的:
- 運動振動呼吸器 (EOV) と睡眠関連の呼吸障害,特に呼吸不全-呼吸不全指数 (AHI) の関連性を研究する.
- CHFにおける死亡率に対するEOVとAHIの合併予後効果を決定する.
主な方法:
- 左心室噴出分数 (LVEF) ≤40%の133人のCHF患者によるコホートが研究されました.
- 患者は,AHIを評価するためにポリソムノグラフィーと,EOVを特定するために心肺運動テストを受けた.
- 生存分析は,約3.2年の平均フォローアップ期間における心疾患の予測要因を特定するために実施されました.
主要な成果:
- 生存しなかった人は,生存者と比較して,より高いAHI,より大きな呼吸器応答 (VE/VCO2傾斜),およびより低いピークVO2を示した.
- 強制性振動呼吸 (EOV) は,生存しなかった患者 (42% vs. 15%) で著しく高頻度であった.
- 高いAHI (>30/h) は,EOVと強く関連していました (78%のEOV患者でAHI>30/h).
- 多変量分析により,AHI (HR 5.66),ピークVO2 (HR 0.93),ベータブロッカーの処方 (HR 0.34) が,心臓病の独立予測因子として特定されました.
- EOVとAHI>30/hの組み合わせは,死亡率の最も強力な予測因子 (HR 6.65) として浮上しました.
結論:
- 運動振動換気 (EOV) は,慢性心不全患者の高い無呼吸-低呼吸指数 (AHI) と有意に関連しています.
- EOVと高いAHIはそれぞれ独立して死亡率を予測しますが,共発生すると予後が著しく悪化します.
- 併合呼吸器疾患は,CHFにおける重要な予後的負担を担っています.
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