患有多发性骨髓瘤的患者的抗血素IgA导致多次凝血测试中的体外干扰和混诊断
Christian Irsara1, Andrea Griesmacher1, Lorin Loacker1
1Central Institute of Medical and Chemical Laboratory Diagnostics (ZIMCL), University Hospital of Innsbruck, Innsbruck, Austria.
Hamostaseologie
|March 1, 2024
概括
一个多发性骨髓瘤患者的抗血素IgA抗体在体外凝固测试中延长了时间,但没有引起出血. 治疗导致抗体消失和凝血正常化,突出显示抗体干扰测试.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 临床病理学 临床病理学
背景情况:
- 一名患有多发性骨髓瘤的59岁患者产生了抗人类血栓IgA抗体.
- 这种抗体导致了长时间的体外凝血时间,模仿抑制剂对内在凝血因子的作用.
- 患者没有出现自发出血或异常的体内出血时间.
研究的目的:
- 为了研究抗人类血栓IgA抗体对凝血试验的影响.
- 确定多发性骨髓瘤患者这种抗体的临床意义.
- 评估治疗对抗体水平和凝血参数的影响.
主要方法:
- 执行了常规和特殊的凝血试验.
- 在体内进行出血时间评估.
- 使用特定抗体测试来识别抗素IgA抗体.
主要成果:
- 抗人类血栓IgA自身抗体干扰了所有涉及人类血栓的体外凝血试验.
- 尽管有体外异常,但患者体内出血时间正常.
- 自主干细胞移植导致IgA副蛋白和抗体几乎消失,随后凝血试验正常化.
结论:
- 人类血栓抗体可以显著干扰凝血试验,造成严重凝血病的错误印象.
- 在体内,这些抗体并不总是与增加出血倾向相关.
- 复杂的凝血异常需要由专门的凝血实验室进行早期跨学科评估.
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