无症状脑卒中(asymptomatic ctroke,AS),亦称静止脑卒中,沉默性脑卒中,是指无临床症状或临床症状轻微,不足以引起患者及医生注意的脑卒中。包括无症状脑梗死(SBI)、无症状脑出血及无症状蛛网膜下腔出血。由于 AS 缺乏定位体征,只有头痛、头晕、智力减退等非特异性症状,既往未引起人们的重视,临床诊断 Asymptomatic stroke (asymptomatic ctroke, AS), also known as silent stroke, silent stroke, refers to no clinical symptoms or clinical symptoms of mild, insufficient to cause the attention of patients and doctors stroke. Including asymptomatic cerebral infarction (SBI), asymptomatic cerebral hemorrhage and asymptomatic subarachnoid hemorrhage. As the lack of positioning signs of AS, only headaches, dizziness, mental retardation and other non-specific symptoms, the previous did not draw the attention of people, clinical diagnosis