血清カリウム濃度と急性心筋梗塞における死亡率
Abhinav Goyal1, John A Spertus, Kensey Gosch
1Department of Medicine, Emory School of Medicine, Atlanta, GA 30322, USA. agoyal4@emory.edu
JAMA
|January 12, 2012
まとめ
急性心筋梗塞 (AMI) の患者にとって最適な血清カリウム濃度は3.5〜4.5mEq/Lです. この範囲を超えたレベルは,より高くても,より低くても,現在の治療期における入院死亡率の増加と関連しています.
科学分野:
- 心臓病学 心臓病学
- クリニック・リサーチ 臨床研究
- 内科内科は,内科の内科である.
背景:
- 現在のガイドラインでは,急性心筋梗塞 (AMI) の患者に対して血清カリウム4.0-5.0mEq/Lを推奨しています.
- これらの勧告は,ベータブロッカーや再注射などの現代の治療法より前の古い研究から生じている.
- AMI患者のカリウムレベルと死亡率に関する最近のデータは限られている.
研究 の 目的:
- 血清カリウム濃度とAMI患者における入院死亡率との関連を調査する.
- ベータブロッカー療法および再注射戦略を含む現代の医療治療の文脈でこれらの関連を評価する.
主な方法:
- 遡及的なコホート研究では,2000年から2008年にかけて,AMIが確認された患者38,689人を分析した.
- 患者は,投与後の平均血清カリウム濃度によって分類された.
- 結果を評価するために,患者および病院の要因に調整された階層的ロジスティック回帰.
主要な成果:
- 血清のカリウム濃度と入院中の死亡率の間にU型関係が観察されました.
- 死亡率は,3.5〜4.5mEq/L. の間のカリウム濃度で最も低い.
- 死亡率は,カリウム濃度≥4.5mEq/L,および濃度<3.5mEq/Lで著しく増加しました.
結論:
- AMI患者における入院中の死亡率を最小限に抑えるための最適な入院後の血清カリウム範囲は,3.5〜4.5mEq/Lです.
- 低血量症と高血量症の両方が,AMIにおける死亡率の増加と関連しています.
- これらの発見は,AMI患者のための現在のカリウム管理ガイドラインを再評価する必要性を示唆しています.
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