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短暂性脑缺血发作是指历时短暂并经常反复发作的脑局部供血障碍,每次发作持续数分钟至1小时,不超过24小时即完全恢复。此病好发于中老年人,男性多于女性。发病突然,迅速出现局限性神经功能或视网膜功能障碍,多于5分钟左右达高峰,持续时间短,恢复快,不留后遗症状,可反复发作,约1/3的病人可发展成为持续性神经功能障碍。常有高血压、糖尿病、心脏病和高脂血症病史。对侧单肢无力或轻偏瘫,可伴有对侧面部轻瘫,是其常见症状。此病的表现形式还有眼睛的一过性黑蒙或失明及失语症。
Transient ischemic attacks are transient partial and frequent episodes of cerebral priming disorders that last from a few minutes to an hour for each episode and complete recovery within 24 hours. The disease occurs in the elderly, more men than women. Sudden onset of localized neurological deficits or retinal dysfunction, more than 5 minutes up to the peak, short duration, rapid recovery, without leaving sequela symptoms, recurrent, about 1/3 of patients can develop into persistent nerve disfunction. Often have high blood pressure, diabetes, heart disease and history of hyperlipidemia. Contralateral unilateral limb weakness or hemiparesis, may be accompanied by lateral paralysis, is its common symptoms. The manifestations of the disease are transient blindness or blindness and aphasia of the eye.