脑外伤昏迷15天手脚会动,能自己呼吸,能睁眼无意识能醒吗

2025-04-07 08:04:22
推荐回答(1个)
回答1:

损伤中头皮下血肿较多,不必特殊处理,经常可自愈。头皮裂伤出血甚多,应早期清创缝合。头盖部的线样骨折无需处理。较大的凹陷性骨折应早期整复。颅底骨折常引起脑脊液鼻漏或耳漏应视为开放颅脑损伤,极易逆行感染,因此脑脊液漏的处理是引流勿堵、消炎待自愈,少数不愈合者可择期外科修补。
意识障碍在脑损伤患者中很常见,轻者伤后出现短暂可逆的意识丧失,严重时伤后持续昏迷直至死亡。导致意识障碍的最终原因是相当范围内大脑皮质功能的丧失,但其具体作用机制目前尚不清楚。受伤后即刻发生的意识障碍,与伤后一定时间后才发生的意识障碍,在发病机制上是不同的。前者与致伤外力在受伤时对脑组织的破坏有关,后者与伤后继发的颅内压升高、脑缺血、脑疝有关。
以往认为,伤后原发性意识障碍的发生机制与脑干功能的损伤有关。具体地说,就是与脑干网状结构上行激活系统的损伤有关。该论点的证据是,在灵长类动物脑震荡模型中,发现存在脑干轴索的变性。然而,近年来该学说受到了强有力的挑战。对严重颅脑损伤、原发性昏迷继而死亡的患者进行病理检查发现,患者大脑半球白质存在广泛的变性,这种病理变化即弥漫性轴索损伤。大宗病例研究和动物实验结果表明,绝大多数原发性昏迷的发生原因是弥漫性轴索损伤而非单纯脑干损伤。

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