老年无症状脑梗死的临床因素探讨

为分析老年脑梗死的危险因素，探讨无症状脑梗死之无症状的原因，采用病例对照研究的方法，以同期住院的３２例有症状的老年脑梗死患者为对照，观察３２例头颅ＣＴ确诊的老年无症状脑梗死患者的危险因素及ＣＴ特征。结果发现，无症状组与对照组相比各项危险因素差异无显著意义（Ｐ＞０．０５）；ＣＴ表现梗死范围两组间差异有非常显著意义（Ｐ＜０．０１），无症状组梗死灶小于１５ｍｍ者占９６．０８％，有症状组梗死灶大于１５ｍｍ者占７６．６０％，表明腔隙性脑梗死是导致老年无症状脑梗死的主要原因之一。

Major causes of silent cerebral infarction in aged patients

Risk factors were evaluated to explore the major causes of no symptoms in aged patients with silent cerebral infarction (SCI ) . By case-control study, the risk factors and CT results were assessed in 32 aged patient diag- nosed by CT as having silent cerebral infarction,and a control group of 32 aged patients with symptomatic cerebral in- farction. There was no statistical significant difference (p>0.05) in risk factors between the SCI group and the control group,there existed marked difference (P< 0. 0l ) in the size of focal infarctions,with 96.08% focal infarction smller than 15 mm in the SCI group and 76. 60% large than 15 mm in the control group. It is suggested that the lacuna cerebral infarction might be one of the major causes of silent cerebral infarction in aged patients.