无症状脑梗死的临床分析

Clinical Analysis of Silent Cerebral Infarction

目的探讨无症状脑梗死(silent brain infarct,SBI)的 CT 及 MRI 和全脑血管造影(DSA)表现特点及危险因素。方法回顾性分析160例脑卒中患者的临床资料,根据无症状脑梗死的定义分 SBI 和非 SBI 两组,对两组的年龄、发病率、临床表现、影像学特征和危险因素进行统计分析。结果 SBI 的发病率为45%(72/160),其中基底节区、放射冠、额叶及顶叶、颞叶为好发部位;SBI 危险因素是高血压、高脂血症、糖尿病和心脏病;颅内血管狭窄程度与 SBI 的发生率基本相当,而其形态异常却与 SBI 的发生有关(P<0.05)。结论 MRI 是确诊 SBI 重要条件之一;DSA 能显示颅内血管;积极有效地干预其危险因素,可以最大程度预防无症状性脑梗死的发生,提高生活质量和健康水平。

Objective To investigate the characteristics of head CT,MRI,and DSA examination of silent cere- bral Infarction (SCI) and risk factors.Methods 160 patients with stroke were analyzed retrospectively.According to the definition of SCI,they were divided into SCI group and non-SCI group.The ages,incidence rate,clinical fea- tures,imaging characteristics and risk factors were statistically analysed in the two groups.Results The incidence rate of SCI amounted to 45% (72/160).The area of basal ganglion,corona radiata,frontal lobe,parietal lobe,tem- poral lobe were the most common positions.The risk factors of SCI included hypertension,hypercholesterolemia,dia- betes mellitus,and heart disease.The degree of intracranial angiostenosis is basically relevant to the incidence of SCI.Vascular paramorphia has a relevance to the incidence rate of SCI(P<0.05).Conclusion MRI is one of the important methods for confirmative diagnosis of SCI;DSA can show the vascular abnormality so as to avoid the risk factors,actively prevent occurrence of SCI,improve the quality of life and lift the level of health.