重篤な病気後の腎臓機能の推定における誤りによる薬物投与カテゴリーの時間的影響
Ryusei Mikami1,2, Shungo Imai3, Mineji Hayakawa4
1Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
British journal of clinical pharmacology
|August 26, 2025
まとめ
重症患者のコッククロフト・ゴールト (CG),MDRD,CKD-EPIなどの方程式を用いて腎機能の推定は,誤った薬剤投与につながる可能性があります. これらの方程式は,測定されたクレアチニンクリアランス (Clcr) と異なる,時間の経過とともに増加する軌道を示した.
科学分野:
- 腎臓科
- クリティカル ケア 医療
- 臨床薬理学
背景:
- 腎機能の正確な評価は,重症患者の薬剤投与に不可欠です.
- クレアチニンクリアランス (Clcr) は腎機能の重要な指標です.
- コッククロフト・ゴールト (CG),腎臓病における食事の変更 (MDRD),慢性腎臓病疫学協力 (CKD-EPI) のような推定方程式は一般的に使用されますが,制限があります.
研究 の 目的:
- CG,MDRD,CKD- EPI方程式の軌道を,重症患者の測定されたClcrと比較する.
- これらの方程式の不一致が薬剤の投与カテゴリーに 時間の経過で与える影響を評価する.
主な方法:
- 5355人の患者さんの 病期後のデータを活用した.
- 腎機能方程式の軌道を推定するために線形混合モデルを使用した.
- 推定方程式と測定されたClcrから得られた薬物用量カテゴリーの比較.
主要な成果:
- 測定されたClcrは28日間で最小限の変化を示した (- 0. 02mL/min/1. 73m2/day).
- 推定式は時間依存の増加を示した:CG (+2.00),MDRD (+1.50) とCKD-EPI (+0.77 mL/分/1.73 m2/日).
- 推定された方程式の半分以上は,測定されたClcrとの差異をもたらし,薬剤の投与カテゴリが変更されました (早期の過小評価,遅い過大評価).
結論:
- クレアチニンベースの推定方程式は,重症患者において時間の経過とともに増加する軌道を示しています.
- これらの不一致は,重症治療の日々の50%以上で誤った薬剤投与カテゴリーにつながります.
- 臨床実践では,重症治療施設での薬物管理のためのこれらの方程式の限界を慎重に考慮する必要があります.
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