昏迷病人的脑电图(EEG)常呈现慢波性异常,亦可见到痫样放电、周期性脑波与电静息等。有的昏迷病人EEG呈类似正常成人清醒状态的α频率范围内的活动,称为“α昏迷”(“alpha coma”),又称为“α型昏迷”(“alpha pattern coma”)或“α样昏迷”(“alpha-like coma”)。现就α昏迷的某些问题作一综述。一、病因:自1953年Loeb与Poggio报告1例桥脑与中脑出血的昏迷病人EEG呈α图型以来,至今文献已有100余例记载,其主要病因有:①缺氧性脑病,几乎均为各种原因引起的心跳与/或呼吸骤停 Electroencephalogram (EEG) in patients with coma often presents with slow wave anomalies, can also see epileptiform discharges, periodic brain waves and electrical rest and so on. Some comatose patients have EEG activity in the alpha frequency range similar to normal adult alertness, known as “alpha coma,” also known as “alpha pattern coma,” or “alpha Like ”alpha-like coma." A summary of some of the problems of α coma. First, the etiology: Since 1953 Loeb and Poggio report 1 case of cerebral pectoris and cerebral hemorrhage in patients with coma EEG showed α pattern, the literature has been more than 100 records, the main causes are: ① hypoxic encephalopathy, almost Are for a variety of causes of heartbeat and / or respiratory arrest