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(1)一过性黑蒙,是正常人突然出现眼前发黑,看不见东西,数秒或数分钟即可恢复,不伴恶心,呕吐、头晕,也无意识障碍,出现黑蒙意味着视网膜有短暂性缺血,可能是由于颅内血液动力学改变或微小血栓通过视网膜动脉所致,黑蒙出现,被视为脑血管病的最早报警信号。(2)短暂性视力障碍不是眼前发黑,而是视物模糊,或视野缺损,多在一小时内恢复。它是被看作是较早的中风预报信号。(3)剃须刮脸征是指自己持刀刮脸时,头转向一侧,突然感觉手臂无力,剃刀落地,并可伴说话不清,1—2分钟完全恢复。这是由于转头扭颈时,引起已老化的脑动脉扭曲,加重了狭窄,导致颅脑供血不足,诱发了一过性脑缺血的症状。尽管恢复很快,但它足以提醒人们,缺血性中风
(1) a transient malady, is a normal sudden black eyes, can not see things, a few seconds or minutes to recover, not with nausea, vomiting, dizziness, but also unconscious obstacles appear amaurosis means the retina is short Ischemia may be due to intracranial hemodynamic changes or small thrombus caused by the retinal artery, dark appeared, is considered the earliest alarm signal of cerebrovascular disease. (2) Transient visual impairment is not black eyes, but blurred vision, or visual field defects, and more within an hour to recover. It is considered as an earlier stroke prediction signal. (3) shaving Shaving refers to his shaving knife, the head turned to one side, suddenly feeling arm weakness, razor landing, and can be accompanied by unclear, 1-2 minutes fully restored. This is due to the rotation of the neck, causing aging of the cerebral arteries distortions, aggravating the stenosis, leading to insufficient blood supply to the brain, induced a transient ischemic symptoms. Despite the rapid recovery, but it is enough to remind people that ischemic stroke