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短暂脑缺血发作(Transient ischemic attacks,TIA),是颈内动脉系统或椎基底动脉系统的短暂血液供应不足,临床表现为突然的局灶神经功能缺失,多在24小时内恢复,但可有反复发作。日本自1968年龟山氏报告本病以来已引起广泛的重视。病因和发病机制TIA的病因,最早(1889年)是Deabody提出的血管痉挛(Vasobpasm)学说,曾在50年代盛行。60年代有人指出,脑的小动脉肌层很薄,只能微弱地收缩,除在特殊情况下,很难发生痉挛,而且动物实验也证实脑小动脉不
Transient ischemic attacks (TIA), which are short-term blood supplies to the internal carotid or vertebrobasilar systems, present with a sudden loss of focal neurological function and recover within 24 hours but may have Recurrent. Since 1958 Kameyama's report of this disease in Japan has attracted widespread attention. Etiology and pathogenesis TIA etiology, the earliest (1889) is Deabody's vasospasm (Vasobpasm) theory, in the 50's prevailed. It was pointed out in the 1960s that the arterioles of the small arteries of the brain are thin and shrink only weakly, except for spasms that are very difficult to cause under special circumstances, and animal experiments also confirm that the arterioles of the brain are not