一过性脑血液循环障碍可发生在血压降低、增高、甚至正常(较少)的情况下。多数国家的作者用此概念只指发生在动脉硬化基础上的一过性脑缺血或一过性脑缺血发作,而将发生于高血压基础上的全脑症状另列为急性高血压性脑病。苏联作者则用此概念既包括一过性脑缺血,又包括高血压危象。一过性脑缺血发作的临床特征是突然发生的神经系统局灶症状,可持续达24小时后消失,不遗留后遗体征。如果24小时后仍有明确的器质性体征,就应认为是“微卒中”。发病率 A transient cerebral blood circulation disorder can occur when blood pressure is reduced, increased, or even normal (less). Most countries use the concept of this concept refers only to the basis of atherosclerosis in a transient ischemic or transient ischemic attack, and will occur in hypertension based on the whole brain symptoms were listed as acute hypertensive Encephalopathy. Soviet Union authors use this concept to include both transient cerebral ischemia and hypertensive crisis. The clinical features of a transient ischemic attack are sudden focal signs of the nervous system that persist for up to 24 hours and disappear without any residual signs. If there is still a definite organic signs after 24 hours, it should be considered “micro stroke.” Incidence