Neurology:后交通动脉瘤破裂为什么会引起硬膜下血肿?

2022-04-13 杨中华 “脑血管病及重症文献导读”公众号

本例捕捉到了动脉瘤实时破裂,血液直接进入硬膜下间隙,而未发现伴蛛网膜下腔或脑内出血。

51岁,女性,高血压病史。

进展性右侧动眼神经麻痹和头痛3周。核磁共振扫描期间,突发意识障碍。MRI捕捉到急性硬膜下血肿(aSDH)迅速扩大(图)。

图1.(A)动脉瘤破裂前的正常MRI。T2加权MRI(轴位)显示,在5min(B)和10min(C)内在MRI捕捉到急性硬膜下血肿(aSDH)迅速扩大。(D)颅骨切除术后CT(冠状位)显示颞下aSDH扩大。(E)CTA(冠状动脉)和(F)脑血管造影(AP)显示破裂的后交通动脉瘤(译者注:如何判断这个动脉瘤已经破裂?):

紧急去骨瓣减压术,术后的影像显示破裂的右侧后交通动脉瘤。

以前报道过动脉瘤破裂导致的孤立性aSDH,但仍不被重视。鉴于脑部MRI的动态记录,本例捕捉到了动脉瘤实时破裂,血液直接进入硬膜下间隙,而未发现伴蛛网膜下腔或脑内出血。

译者注:后交通动脉瘤破裂伴随硬膜下血肿并不少见,估计是动脉瘤破裂时汹涌的出血撕破蛛网膜,血液进入硬膜和蛛网膜之间,因此形成硬膜下血肿。或者动脉瘤破裂前,动脉瘤顶部往往存在炎症反应,炎症对蛛网膜造成破坏或粘连,当顶部破裂时引起硬膜下血肿。

原始出处:

Christopher Hong, Daniela Renedo, Nanthiya Sujijantarat, et al. Real-Time Imaging of Aneurysmal Rupture Causing an Isolated Acute Subdural Hematoma. Neurology. 2022 Mar 1;98(9):373-374. doi: 10.1212/WNL.0000000000013251. Epub 2021 Dec 22.

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    2022-12-12 yinhl1978
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    2022-04-16 高神经

    硬膜下血肿为什么不考虑是患者意识障碍后摔倒造成的呢?动脉瘤破裂的血进入硬脑膜,感觉有点扯

    0

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