呼吸器関連肺炎の重症患者における予後栄養指数と全因死亡率との関連:MIMIC- IVデータベースに基づく遡及研究
Wenwen Ji1, Guangdong Wang1, Jia Liu2
1Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Frontiers in nutrition
|September 3, 2025
まとめ
診断栄養指数 (PNI) の上昇は,呼吸器関連肺炎 (VAP) の患者の死亡率の低下と関連しています. 早期のPNI評価は,標的を絞った介入のための高リスクのVAP患者を特定することができます.
科学分野:
- クリティカル ケア 医療
- 栄養学的バイオマーカー
- 感染症
背景:
- 呼吸器関連肺炎 (VAP) は,高死亡率のICUでの重大な課題です.
- 栄養状態と免疫状態を反映した予測栄養指数 (PNI) は,VAPにおける予測値が不明である.
- この研究は,PNIとVAP患者の死亡率との関連を調査しています.
研究 の 目的:
- VAPを患っている重症患者の前見栄養指数 (PNI) の前見的意義を評価する.
- VAP患者における30日および90日間の全因死亡率との関連を決定する.
- 先進的な統計分析を用いてPNIと死亡率の関係を調査する.
主な方法:
- MIMIC- IVデータベースから1, 457人のVAP患者を遡及分析した.
- PNI四分位数と最適な値によって分類された患者
- コックス回帰,制限立方脊髄 (RCS) 分析,およびサブグループ分析が行われました.
主要な成果:
- 30日死亡率と90日死亡率はそれぞれ23. 68%と34. 32%でした.
- PNIクォーティルの高さは,死亡率の有意な低下と関連していた (調整HR < 1).
- RCS分析は,PNIと死亡率 (p < 0. 001) の間にある"L"形の非線形関係を明らかにした.
結論:
- 集中治療室でのPNIの上昇は,VAP患者における短期および長期の死亡率の低下と独立して関連しています.
- 定期的な PNI 評価は,高リスクの VAP 患者の早期発見に役立ちます.
- PNIは,改善されたVAPの結果のための標的の栄養および免疫学的介入を導くことができます.
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