摘要随着影像学技术的发展,尤其是磁共振弥散加权成像的应用,可以很容易地检测到无症状卒中病灶.无症状卒中的患病率和发病率均高于有症状卒中,年龄、高血压、心房颤动等是其公认的危险因素.尽管按照定义无症状卒中缺乏临床卒中样症状,但仔细检查仍常有轻微的躯体和认知功能障碍.此外,无症状卒中还与随后的有症状卒中、认知功能减退以及痴呆的发生有关.因此,临床医生需予以重视,积极控制其高危因素和改善其预后.

abstractsWtth the development of imaging technique,particularly the use of magnetic resonance diffusion weighted imaging,it can easily detect silent stroke lesiom.Both the prevalence and incidence of asyrrotomatic stroke were higher than those of symptomatic stroke.Age,hypertemion and atrial fibrillation are its accepted risk factors.Although silent stroke lacks clinically overt stroke-like symptoms by definition,it often has mild physical and cognitive impairment with careful examination.Furthermore,asymptomatic stroke is also correlated with the occurrence of subsequent symptomatic stroke.decreased cognitive function and dementia.Therefore,clinicians should pay more attention to it,positively control its risk factors and improve its prognosis.