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脑血管反应性可用于评价脑循环储备能力,而脑循环储备能力减退可增加卒中的危险性。经颅多普勒检测平静呼吸扩屏气末时大脑中动脉平均血流速度,根据脑血管的不同舒缩反应,评价脑血管反应性和脑梗死之间的关系。
Cerebrovascular reactivity can be used to assess cerebral circulatory reserve capacity, while decreased brain circulatory reserve capacity may increase the risk of stroke. The transcranial Doppler was used to detect the average blood flow velocity of the middle cerebral artery when the breath was breathless, and the relationship between cerebrovascular reactivity and cerebral infarction was evaluated according to the different systolic and diastolic responses of cerebrovascular.