術前スタチンの投与は,Q波以外の術後心筋梗塞の程度を低下させる
Joerg Herrmann1, Amir Lerman, Dietrich Baumgart
1Department of Cardiology, University Clinic Essen, Essen, Germany.
Circulation
|October 23, 2002
まとめ
処置前のスタチン治療は,冠動脈ステントを設置した後の大きな心筋損傷のリスクを大幅に軽減します. この心臓保護効果は,介入性心臓病学のスタチンの重要性を強調しています.
科学分野:
- 心臓病学 心臓病学
- 介入性心臓病学 介入性心臓病学
- 薬理学 薬理学とは
背景:
- ステントによる心筋損傷は一般的であり,小循環の問題,血小板の蓄積,炎症,酸化ストレスに関連しています.
- 3-ヒドロキシ-3-メチルグルタリル共酵素A (HMG-CoA) 還元酵素阻害剤 (スタチン) は,脂質を下げる以外にも,抗血栓性,抗炎症性,抗酸化性を持っています.
研究 の 目的:
- 処置前のスタチン療法が冠動脈ステント設置に関連する心筋損傷の範囲を減少させるという仮説を検証する.
主な方法:
- ステントを挿入した296人の患者は,スタチン治療群 (229) と対照群 (67) とに分けられました.
- 心筋損傷は,クリエチンキナーゼ (CK) と心臓トロポニンT (cTnT) レベルによって,介入後の複数の時間点で評価されました.
- 統計分析により,心筋損傷に関連する要因が特定されました.
主要な成果:
- 正常値の上限より3倍以上のクレアチンキナーゼ上昇の発生率は,スタチンを投与した患者で90%以上低かった (0.4%対6.0%,P=0.01).
- スタチンの治療は,CK上昇が3倍以上のULN (OR:0.08,95%CI:0.01〜0.75,P=0.03) を減少させた唯一の独立した予測因子でした.
- CKとcTnTの上昇の総発生率は,スタチン群ではわずかに低かったが,統計的に有意ではなかった (P=0.3とP=0.5,それぞれ).
結論:
- 処置前のスタチンの投与は,ステント設置後の大きな心筋梗塞の発生率の低下と関連しています.
- 冠動脈介入におけるスタチンの心臓保護効果を確認するために,さらなるランダム化試験が推奨されています.
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