うつ病,心拍数の変動,急性心筋梗塞
R M Carney1, J A Blumenthal, P K Stein
1Departments of Psychiatry, Washington University School of Medicine, St Louis, MO, USA. carneyr@bmc.wustl.edu
Circulation
|October 24, 2001
まとめ
心臓発作患者のうつ病は,より低い心拍数変動 (HRV) と関連しており,自律機能障害を示唆しています. これは,うつ病が心筋梗塞 (MI) の後の心臓死亡リスクを増やす理由を説明するかもしれません.
科学分野:
- 心臓病学 心臓病学
- 精神科医は精神病を患っている.
- 自律神経科学とは
背景:
- 臨床的うつ病は,心筋梗塞 (MI) の後の患者の死亡のリスク要因として知られています.
- 減少した心拍数変動 (HRV) は,この死亡リスクの増加を媒介すると仮定されています.
- 心臓発作後の患者のうつ病と心臓の健康との関係を理解することは,治療結果を改善するために極めて重要です.
研究 の 目的:
- 最近心筋梗塞 (MI) を経験した患者のうつ病と心拍数変動 (HRV) の関連性を調べる.
- 鬱を患ったポストMI患者のHRVが,鬱を患っていない患者と比較して有意に低下しているかどうかを判断する.
主な方法:
- 鬱を患った急性MI患者380人と,鬱を患っていない患者424人を募集した.
- 退院後の24時間通行用心電図モニタリングを実施しました.
- 単変量分析と共変量分析を使用して,HRV指数を評価し,年齢,性別,糖尿病,喫煙などの混同要因をコントロールしました.
主要な成果:
- 鬱を患っている患者は,鬱を患っていない患者と比較して,4つのHRV指数において有意に低いレベルを示した.
- 共同変数を調整した結果,3つのHRV指数は,うつ状態のグループで著しく低いままでした.
- 高周波電力は,最終モデルのグループ間で有意に異なっていない唯一のHRV指数でした.
結論:
- 自律機能不全を反映したHRVの低下は,心筋梗塞後の患者のうつ病と心臓病による死亡率の増加を結びつける合理的なメカニズムである.
- これらの発見は,死亡リスクを軽減するために,心血管疾患のケアにおいてうつ病に対処することの重要性を強調しています.
- 自律的機能障害は,心理的苦痛が心臓の健康に影響を与える重要な経路である可能性があります.
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