血液中の乳酸塩濃度の迅速な決定のための基板特異の電極の使用と臨床的重要性
J Aduen1, W K Bernstein, T Khastgir
1Department of Medicine, Sinai Hospital of Baltimore, MD 21215-5271.
JAMA
|December 7, 1994
まとめ
新しい電極は,血中乳酸を正確に測定します. 乳酸塩濃度の上昇 (>4 mmol/L) は,健康な個体ではまれであり,入院患者の重症疾患または死亡リスクを示す可能性があります.
科学分野:
- 臨床化学 臨床化学について
- バイオメディカルエンジニアリング
- クリティカルケア・メディシン
背景:
- 循環中の乳酸の迅速かつ正確な測定は,患者の診断と予後にとって極めて重要です.
- 乳酸塩の測定のための既存の方法は時間がかかり,急性ケア環境での有用性を制限する可能性があります.
研究 の 目的:
- ラクト酸の急速測定のための新しいアンペアメトリック,酵素,基板特異の電極の精度と臨床的重要性を評価する.
- 血中乳酸酸塩濃度の上昇の診断および予後値を定めるため.
主な方法:
- 様々な病院 (ICU,ED,一般病棟) の1218人の患者と対照群を対象とした前向きな研究.
- 新しい電極の検証は,既定の2つの実験室基準方法に対して行われました.
- 臨床的重要性を評価するために,さまざまな患者集団における血液中乳酸塩濃度の分析.
主要な成果:
- 新しい電極は,バイアス,精度,相関性 (r値0.98まで) の観点から,参照方法と優れた一致を示した.
- 乳酸塩濃度の上昇 (>4 mmol/L) は,ICUおよびED患者において,正常な被験者および一般病棟患者と比較して有意に高かった (P < .001).
- 乳酸塩濃度>4 mmol/Lは,ED患者における入院を予測する高特異性 (98.2%) を示し,非潜在性入院患者における死亡率を予測する高特異性 (96%) を示した.
結論:
- 新しいアンペアメトリック電極は,精密で正確な乳酸測定を提供します.
- 血中乳酸塩濃度が4mmol/Lを超えるのは,健康な患者や重症でない患者では珍しいことであり,潜在的な懸念を示している.
- 高い乳酸塩濃度 (>4 mmol/L) は,重症患者および重症でない入院患者において,予後不良と関連しています.
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