標準の血圧制御と比較した集中治療の効果に対する ベースラインのダイアストリック血圧の影響
Srinivasan Beddhu1,2, Glenn M Chertow3, Alfred K Cheung4,2
1Medical Service, Veterans Affairs Salt Lake City Health Care System, UT (S.B., A.K.C.) srinivasan.beddhu@hsc.utah.edu.
Circulation
|October 13, 2017
まとめ
静脈動脈血圧 (SBP) の低減は,異なる初期静脈動脈血圧 (DBP) レベルにおいて,心血管のアウトカムに同様の効果をもたらします. しかし,ベースラインの低いDBPは,独立して心血管疾患のリスクを高めます.
科学分野:
- 心臓病科
- 腎臓科
- 臨床試験
背景:
- 低静脈血圧 (DBP) の個体における集中静脈血圧 (SBP) の低下の影響は不明である.
- 高血圧の管理は,心臓血管疾患 (CVD) の予防に不可欠です.
研究 の 目的:
- ベースラインのDBPが,CVDのアウトカムに対するSBPの低減の効果に影響を及ぼすかどうかを調査する.
- ベースライン DBP と CVD イベント,全因死亡率,慢性腎疾患との関連性を分析する.
主な方法:
- 9361人の高血圧の高齢者を対象としたSPRINT (シストリック血圧介入試験) のポストホック分析.
- 集中 (目標値 <120 mm Hg) と標準 (目標値 <140 mm Hg) のSBPコントロールの比較
- ベースラインDBPカテゴリーによる治療効果の変更の検討
主要な成果:
- ベースラインのDBPは,CVDのアウトカムとU型の関連性を示し,低レベルのDBPと高レベルのDBPの両方でリスクが増加したことを示した.
- 主要なCVDアウトカムに対するSBP介入の効果は,すべてのベースラインDBP値 (相互作用のP=0. 78) に一致した.
- すべての原因による死亡や慢性腎臓病の発生など,二次的なアウトカムでも同様の結果が見られた.
結論:
- 低ベースラインのDBPは,CVDイベントの独立した危険因子です.
- 濃度のSBP低下による心血管上の利益は,ベースラインDBPレベルに影響されない.
- これは,高リスクの高齢者の初期DBPに関係なく,集中的なSBPターゲットが有益であることを示唆しています.
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