Hsiao Kuang-Yu, Hsiao Cheng-Ting, Lin Leng-Jye, Shiao Chi-Jei, Chen I-Chuan
Department of Emergency, Chang Gung Memorial Hospital, Chiayi, Puzih City, Chiayi County 613, Taiwan.
Am J Emerg Med. 2008 Mar;26(3):382.e3-4. doi: 10.1016/j.ajem.2007.05.028.
Transient ischemic attack is one of the most common causes of transient neurologic deficit. Anemic hypoxia results from reduced hemoglobin content with normal arterial oxygen tension and saturation. Anemic hypoxia caused by blood loss or hemolysis has not been considered as an independent factor leading to significant neurologic problems because cerebral homeostasis adjusted by the physiologic regulation in cerebral hemodynamics and oxygenation would meet the brain oxygen requirement in most circumstances even with profound anemia. We report a case of severe anemia associated with transient ischemic attack involving vertebrobasilar circulation.
短暂性脑缺血发作是短暂性神经功能缺损最常见的原因之一。贫血性缺氧是由于血红蛋白含量降低而动脉血氧张力和饱和度正常所致。失血或溶血引起的贫血性缺氧尚未被视为导致严重神经问题的独立因素，因为即使在严重贫血的情况下，通过脑血流动力学和氧合的生理调节来维持的脑内环境稳定在大多数情况下仍能满足大脑的氧需求。我们报告一例与涉及椎基底动脉循环的短暂性脑缺血发作相关的严重贫血病例。
