CLIN CHEM LAB MED:β-内酰胺类抗生素结果的测量不确定度:对治疗药物监测的估计和临床影响

2020-03-17 MedSci原创 MedSci原创

尽管测量不确定度数据有助于对测量值进行适当的解释,但有关临床实验室的报告却很少。

尽管测量不确定度数据有助于对测量值进行适当的解释,但有关临床实验室的报告却很少。我们旨在估计β-内酰胺类抗生素结果的测量不确定度,并评估报告测量不确定性的影响以及对临床医生指导抗生素治疗时的决策。

研究人员利用一种单一实验室验证方法(EUROLAB指南),通过UHPLC-MS / MS方法获得的β-LA(氨曲南[ATM],头孢吡肟[FEP],头孢他啶[CAZ]和哌拉西林[PIP])的测量不确定度。主要不确定性来源与校准器的分配值,中间精度和偏差有关。 作为一项机构计划的一部分,对具有骨关节感染的患者连续输注β-LA并进行监测,以确保其值至少达到最低抑制浓度(4×MIC)的4倍。 我们回顾性评估了两种情况的实验室报告对临床医生预期决策的影响,同时监测了治疗情况:报告仅包含β-LA值,或包含β-LA覆盖区间(β-LA值及其扩展的测量不确定度)。

ATM、FEP、CAZ和PIP的相对扩展不确定度分别低于26.7%、26.4%、28.8%和25.5%。报告测量不确定度后,我们发现临床医生可能会修改他们的决定,尤其是在4个MIC值在β-LA覆盖范围内的情况下。

这项研究提供了一个简单的方法来估计β-LA值的测量不确定性,该方法可以很容易地应用于临床实验室。进一步的研究应该重点关注在指导抗生素治疗的同时,报告测量不确定度对临床医生的决策具有潜在的影响。

原始出处:

Raúl Rigo-Bonnin,Francesca Canalias,Measurement uncertainty of β-lactam antibiotics results: estimation and clinical impact on therapeutic drug monitoring

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