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在机械凝血测试系统中消除直接口服抗凝剂干扰的简化方法 - 一个概念验证
Thomas Exner1, Manita Dangol1, Emmanuel J Favaloro2,3,4
1Haematex Research Pty Ltd., Sydney, NSW 2077, Australia.
Journal of clinical medicine
|February 24, 2024
概括
直接口服抗凝剂 (DOAC) 可以干扰狼抗凝剂 (LA) 测试. DOAC Stop (DS) 有效地去除了DOAC,剩余的DS不会影响机械凝块检测系统,简化了测试程序.
科学领域:
- 血液学 血液学 血液学
- 临床化学 临床化学
- 实验室医学 实验室医学
背景情况:
- 直接口服抗凝剂 (DOAC) 可以干扰静血测试,包括狼抗凝剂 (LA) 测试,导致不准确的结果.
- 活性炭产品DOAC Stop (DS) 用于从血中去除DOAC,但其残留存在可能会影响血栓检测.
- 目前用于DS的协议涉及等离子处理,离心和分离,这可能因操作员错误和残留木炭颗粒而复杂化.
研究的目的:
- 调查残留DOACStop (DS) 和一种新的液体配方 (DS-L) 对凝血测试的影响.
- 评估机械凝块检测系统在试验血中存在残留DS时的性能.
- 为了确定使用DS与机械凝块检测时是否可以省略离心步骤.
主要方法:
- 对正常和异常等离子体添加了不同度的DS,有或没有DOAC.
- 进行了凝血测试,包括前列血时间 (PT),激活的部分血栓形成时间 (APTT) 和稀释的拉塞尔蛇毒毒时间 (dRVVT).
- 测试直接在机械凝块检测分析仪中进行,没有先前的血/DS离心.
主要成果:
- DS,即使是推度的两倍,对所有测试的凝血试验的影响最小.
- 剩余的DS的存在不会干扰机械系统对凝块的检测.
- 血/试剂混合物的可见性被DS掩盖,但这没有影响机械凝块检测.
结论:
- 将DOAC Stop转移到经过处理的等离子体中似乎不会导致机械凝块传感器的问题.
- 当使用DS与机械凝块检测系统时,离心步骤可能会被遗漏.
- 这种简化可以扩大DOAC去除剂在实验室测试中的潜在应用.
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