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脑缺血最常见的病因不在颅内而在颅外颈部颈动脉,这是近几年来脑缺血研究的重大成就。这一突破性发现使脑缺血从不治成为可治、从可治成为可防,从而降了脑缺血的死亡率和病残率。这一发现要求临床医师提高对脑缺血预警信号的认识,作出早期诊断,正确选择预防性外科手术,以提高脑缺血的防治水平。缺血性中风的病因 1.颅外预内动脉的上行性栓子,最多见,占50％～60％。主要起因为动脉粥样硬化斑块狭窄溃疡,其好发部位绝大多数在颈总动脉分叉颈内动脉起始段2cm范围内(占80％),其余20％发生在虹吸部和大脑中动脉大脑前动脉的分叉、拐弯处。
The most common cause of cerebral ischemia is not intracranial and extracranial carotid artery, which is a major achievement in recent years, cerebral ischemia research. This groundbreaking finding has made cerebral ischemia manageable from incurable and curable into preventable, reducing the rate of death and morbidity from cerebral ischemia. This finding requires clinicians to raise awareness of early warning signs of cerebral ischemia, to make early diagnosis, the correct choice of preventive surgery to improve the prevention and treatment of cerebral ischemia. Causes of ischemic stroke 1. Extracapsular extracortical artery emboli, the most common, accounting for 50% to 60%. The main cause of atherosclerotic plaque narrow ulcer, the vast majority of its predilection sites in the carotid artery bifurcation within 2cm of the initial section of the internal carotid artery (80%), the remaining 20% occurred in the siphon and the brain Anterior cerebral arteries bifurcation, corner.