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Clinica Chimica Acta:气力管路系统可降低高灵敏度心肌肌钙蛋白的错误

2019-10-17 gladiator MedSci原创

气力管路系统(PTS)在临床实验室中得到了广泛的应用。本研究的目的是评价PTS对高敏感性心肌肌钙蛋白T (hs-cTnT)检测的影响。

气力管路系统(PTS)临床实验室中得到了广泛的应用。本研究的目的是评价PTS对高敏感性心肌肌钙蛋白T (hs-cTnT)检测的影响。

研究人员采用溶血指数(HI)测定急诊hs-cTnT患者标本的溶血分布。将15名健康志愿者的分组样本通过手工递送(MD)PTS送到实验室。并通过干扰研究,了解不同溶血程度对hs-cTnT检测的影响。

研究发现临床7.26%ED患者溶血。与MD相比,研究人员发现患者血浆游离血红蛋白(Hb)明显升高。Hs-cTnT受游离Hb (R=-0.625, P<0.01)干扰,这同样也在干扰研究中而得到了证实(R ≥ -0.820,所有P ≤ 0.01)。在每hs-cTnT浓度为100 mg / dl的游离Hb时,临床上存在明显的偏倚(Bias≥-13.85%,所有P all <0.05)。此外,hs-cTnT在 50 mg / dl游离Hb的偏倚接近10%,特别是在30ng/l hs-cTnT浓度(偏倚:-11.72%,P<0.01)

研究结果表明,PTS可以增加标本溶血的频率,这可能导致hs-cTnT检测的非真实降低。因此,临床医生应该意识到游离Hb50mg/dl的溶血PTS样本的测量偏倚会增加。

原始出处:

Jia WeiYi-ning WuFalse decrease of high-sensitivity cardiac troponin T assay in pneumatic tube system samples

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    2020-07-14 respect
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    2019-12-17 windight
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