论文部分内容阅读
颈动脉系疾病常见,但不一定并发大脑梗死。尸检证实颈内动脉梗塞约占2～5%,其中仅半数有症状。大脑梗死有一过性大脑前部缺血症状者,第一年约占17%,以后每年5%。一过性脑缺血发作(TIA)如合并颈动脉梗塞,则卒中的危险更大。有一些颈动脉疾病又出现症状者,脑梗死发生的危机尤大。吸CO_2测定大脑循环的反应可判断颈动脉病病人大脑的侧支循环,阻塞越严重,CO_2反应越差。本项研究目的在于找出能否利用脑血流和CO_2反应性来识别颈动脉系统闭塞并同许多其它原因所引起的脑缺血症状
Carotid artery disease is common, but not necessarily complicated by cerebral infarction. Autopsy confirmed internal carotid artery infarction accounts for about 2 to 5%, of which only half of the symptoms. Cerebral infarction has transient ischemic anterior cerebral symptoms, about 17% in the first year, after 5% per year. A transient ischemic attack (TIA), such as a carotid artery infarction, presents a greater risk of stroke. There are some symptoms of carotid artery disease, cerebral infarction crisis is particularly large. Suction CO_2 determination of brain circulation response can be judged in patients with carotid artery disease in the collateral circulation, the more serious obstruction, the worse the CO_2 response. The aim of this study was to find out whether cerebral blood flow and CO 2 reactivity can be used to identify occlusions of the carotid system and many other causes of cerebral ischemia