認知症の可能性に対する集中血圧対標準血圧の効果:ランダム化臨床試験
, Jeff D Williamson1, Nicholas M Pajewski2
1Section of Gerontology and Geriatric Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina.
JAMA
|January 29, 2019
まとめ
集中的な血圧管理は認知症のリスクを有意に低下させなかった. しかし,高血圧の成人では軽度の認知障害と統合認知障害のリスクを低下させました.
科学分野:
- 神経学
- 心臓病科
- 高齢者医療
背景:
- 現在,軽度の認知障害や認知症のリスクを減らすために実証された治療法はありません.
- 高血圧は認知機能低下の 修正可能な危険因子です
研究 の 目的:
- 認知症のリスクに対する 集中的な血圧管理の効果を評価する.
主な方法:
- 50歳以上の高血圧患者9361人を対象としたランダム化臨床試験.
- 参加者は,シストリック血圧目標値 < 120 mm Hg (強度) または < 140 mm Hg (標準) にランダムに割り当てられました.
- 認知的アウトカムには認知症と軽度の認知障害が含まれる.
主要な成果:
- 血圧の集中管理は認知症のリスクを有意に低下させなかった (HR,0. 83; 95% CI,0. 67 - 1. 04).
- 軽度の認知障害のリスクを著しく低下させた (HR,0. 81; 95% CI,0. 69- 0. 95).
- 軽度の認知障害または認知症の可能性の併用アウトカムも減少した (HR,0. 85; 95% CI,0. 74- 0. 97).
結論:
- 静脈動脈血圧の目標値 < 120 mm Hg の治療は,静脈動脈動脈血圧 < 140 mm Hg の治療と比較して,認知症のリスクを有意に低下させなかった.
- 早期終止と予想より少ない症例による認知症リスクの有意な違いを検出するには,研究が不足している可能性があります.
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