颈内动脉系统短暂性脑缺血发作患者脑动脉狭窄的分布特征

The Distribution of Cerebral Artery Stenosis of Carotid Transient Ischemic Attacks

目的通过数字减影血管造影检查,研究颈动脉系统短暂性脑缺血发作与颅内外供血动脉狭窄的关系。方法对251例颈内动脉系统短暂性脑缺血发作患者的全脑血管造影术资料进行分析,计算颅内外血管狭窄发生率,对不同年龄组患者颅内外血管狭窄情况进行统计学比较。结果 251例颈内动脉系统短暂性脑缺血发作的患者,有248例检出了脑动脉狭窄,占98.8%。共检出病变血管688支,前循环病变587支(85.3%),后循环病变101支(14.7%)。青年组颅内动脉狭窄高于颅外动脉,老年组颅外动脉狭窄高于颅内动脉,老年组颅外动脉狭窄高于中年组和青年组,中年组颅外动脉狭窄高于青年组。结论本研究资料提示,前循环动脉狭窄为颈内动脉系统短暂性脑缺血发作的主要原因。不同年龄患者脑动脉狭窄的空间分布明显不同。

Aim All the patients had received digital subtraction angiography to investiagte the relationship between the clinical features of carotid transient ischemic attacks and intracranial or extracranial angiostenosis. Methods The frenquency of senosis of the intra-cranial and extracranial arteries in digstal subtraction angiography of 251 patients with carotid transient ischemic attacks was caiculated. The frequency of stenosis of arteries in various age groups was compared. Results Among the 251 patients, cerebral artery stenosis was found in 248 （98.8%）. Totally 688 arteries were detected. Anterior circulation lesions in 587 （85.3%）, posterior circulation lesions 101 （ 14. 7% ）. In yonug group, the frequency of stenosis of intracranial artery was higher than extracranial artery, while in the old group, the frequency of stenosis of extracranial artery was higher than intracranial artery. In the old group, the frequency of stenosis of extracranial artery was higher than the middle-age group and young group, while in the middle-age group, the frequency of stenosis of extracranial artery was higher than young group. Conclusion In the study, cerebral artery stenosis distrib- utes characteristicly with age.