Blood:约一半的ITP患者可能存在隐匿性脑微出血!

2020-08-10 MedSci原创 MedSci原创

脑SWI证实约50%的血小板计数<30x109/L的ITP患者存在隐匿性脑微出血;CMB与病程持续时间长、血小板计数最低值相关,或可成为出血风险的非侵入性指标。

免疫性血小板减少症(ITP)的症状管理和危及生命的出血的预防必须与现有治疗的不良反应相平衡。由于目前基于血小板计数的治疗指南被不同的出血表型所混淆,因此,有必要确定新的疾病严重程度相关的客观标记物,以改善治疗分层。

在这项横断性、前瞻性研究中,共收纳了49例ITP患者,其血小板最低记录低于30×109/L。研究人员采用易感性加权的MRI(SWI)检测脑微出血(CMB)作为隐匿性出血的标志。使用半自动方法检测CMB,并使用多变量Poisson回归分析将其与临床数据相关联。

脑回CMB的检出率为43%(21/49);CMB的发生率随血小板计数降低而增加(<5x109/L:15/25;5~9x109/L:4/11;10~14x109/L:2/9 ;>15x109/L:0/4),还与病程持续时间较长、血小板计数低谷较低、MRI时血小板计数较低和器官出血评分较高有关。粘膜和皮肤出血评分、既往治疗次数、年龄和性别与CMB无关。

隐匿性脑微出血常见于中重度ITP患者。与ITP持续时间的密切关联可能反映了随着时间的推移,CMB累积或更难治性。虽然相关,但血小板计数低或出血评分都不能预测CMB。

因此,SWI可以提供一种额外的出血性表型的非侵入性生物指标并有可能作为治疗分层的辅助手段。对儿童和成人的进一步纵向研究又助于我们更好地了解CMB的自然过程、临床和预后意义。

原始出处:

Nichola Cooper,et al. IDENTIFICATION OF OCCULT CEREBRAL MICROBLEEDS IN ADULTS WITH IMMUNE THROMBOCYTOPENIA. Blood. August 4,2020.

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    2020-08-12 whmdzju
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    2020-08-10 平平淡淡123

    学习

    0

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    2020-08-10 qinqiyun

    优秀

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    2020-08-10 12

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