脑缺血是脑血管病的最主要的病种 ,是我国的常见病、多发病 ,具有高死亡率和高致残率的特点。由于本病发生机理十分复杂 ,许多环节尚未完全阐明 ,故临床治疗效果欠佳。因此 ,对缺血性脑损伤病理生理机制的研究正方兴未艾 ,并取得了突破性的进展 ,提出自由基 ,能量耗竭 ,兴奋性 Cerebral ischemia is the most important disease of cerebrovascular disease, is a common disease in our country, frequently-occurring disease, with high mortality and high morbidity characteristics. As the pathogenesis of this disease is very complicated, many aspects have not been fully elucidated, so the clinical treatment of poor results. Therefore, the pathophysiology of ischemic brain injury research is in the ascendant, and made a breakthrough, made free radicals, energy depletion, excitability