动脉血液气体样本在延迟分析和机械应力后的稳定性
Max Gutermuth1,2,3, Harald Ihmsen1, Frederick Krischke1
1Department of Anesthesiology, Erlangen University Hospital, Erlangen, Germany.
PloS one
|December 4, 2025
概括
血液气体分析剂的稳定性对于准确的结果至关重要. 血红蛋白,葡萄糖和电解质在延迟60分钟和机械压力后仍然有效,与氧气和乳酸盐不同.
科学领域:
- 临床化学 临床化学
- 实验室医学 实验室医学
- 生物标记分析 生物标记分析
背景情况:
- 预分析变量显著影响生物标志物的稳定性和测试有效性.
- 血液气体分析在重症监护室 (ICU) 中至关重要.
- 了解应力下分析物的稳定性对于可靠的诊断至关重要.
研究的目的:
- 评估延迟分析和机械压力对血液气体分析剂稳定性的影响.
- 在分析前操作后确定常见的血液气体生物标志物的有效性.
- 评估结果是否保持在可接受的准确度范围内.
主要方法:
- 从240名ICU患者的血液样本被立即分析,并在室温下延迟60分钟后进行分析.
- 在第二次分析之前,样品经历了机械应力 (重复下降).
- 测量了13种分析物质,使用Bland-Altman图表来评估与Rili-BAEK准确度极限之间的差异.
主要成果:
- 血红蛋白,肌素,葡萄糖和电解质在延迟后显示出可接受的协议.
- pH和超过了准确度限制,但在临床上是可以接受的.
- 氧的部分压力和乳酸表明了显著的,临床上不可接受的变化.
结论:
- 血红蛋白,葡萄糖和电解质在机械应力下稳定60分钟.
- 和二氧化碳的部分压力可能是近似的,但需要小心.
- 在延迟和压力后,氧气部分压力和乳酸盐结果不可靠,需要及时分析.
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