Risk Factors Of Intracranial And Extracranial Artery Stenosis/occlusion In Patients With Acute Cerebral Infarction

Objective:To explore the distribution of risk factors between intracranial and extracranial artery stenosis / occlusion and acute cerebral infarction.Methods:1.All the patients were from the First Affiliated Hospital of Nanchang University.They were diagnosed as acute cerebral infarction in neurology department from January 2018 to December 2018.All patients were examined by CT angiography or 3.0T MR angiography.2.According to the inclusion criteria and exclusion criteria,5810 selected patients were analyzed in terms of length of stay,arterial stenosis,gender difference,seasonal distribution of cerebral infarction,age distribution of cerebral infarction,measurement of cerebral infarction area,Adama classification,NIHSS score,etc.Results:(1)The proportion of cerebral infarction in each age group was the elderly(61.1%)> the middle-aged(45.2%)> the young(26.3%).The incidence of cerebral infarction was not related to seasons,but it was significantly higher in stenosis /occlusion group and male.In terms of length of stay:(1)in all patients,there was no significant difference in the proportion of patients with stenosis less than 7 days.(2)There was no significant difference in the incidence of stenosis between 7 and 15 days in all patients.(3)There was a significant difference in the incidence of stenosis in all patients.(2)The order of stenosis rate was middle cerebral artery(39.6%,599 / 1511)>internal carotid artery(34.8%,526 / 1511)> posterior cerebral artery(19.7%,298 /1511)> common carotid artery(17.9%,271 / 1511)> anterior cerebral artery(12.1%,183 / 1511)> vertebral artery(12.0%,182 / 1511)> basilar artery(5.0%,75 / 1511)>external carotid artery(2.2%,33 / 1511).(3)In Adama type 3 cerebral infarction,the composition ratio of stenosis /occlusion group was higher than that of non stenosis / occlusion group,and there was no significant difference between stenosis / occlusion group and non stenosis /occlusion group.There was a positive correlation between infarct size and NIHSS score.There was a positive correlation between stenosis and infarct size.Conclusion:1.The incidence rate of cerebral infarction in intracranial and extracranial artery stenosis / occlusion was much higher than that in the absence of stenosis /occlusion group.2.The cerebral infarction caused by stenosis / occlusion is related to gender and old age,but not to season.3.The incidence rate of cerebral infarction caused by stenosis / occlusion is significantly different from that of patients with a time of more than 15 days.4.Patients with stenosis / occlusion are more likely to have large-scale infarction.The higher the degree of stenosis,the larger the infarct area and the heavier the symptoms(NIHSS score).