Grindal A B, Suter C
Electroencephalogr Clin Neurophysiol. 1975 May;38(5):521-6. doi: 10.1016/0013-4694(75)90193-5.
Two cases are reported in which reversible deep coma subsequent to high voltage electrical injury occurred in association with alpha frequencies in the EEG. The EEG pattern differs from the alpha rhythm of the normal awake patient by its diffuse distribution and unresponsiveness to a variety of stimulation. The term "alpha-pattern coma" is introduced to designate the occurrence of this pattern in comatose patients. The EEG in the cases described initially demonstrated activity in the alpha frequency which occurred in a generalized distribution and was unresponsive to stimulation. During the early stages of recovery an increased incidence of theta and delta activity was observed. The recovery records contained a low voltage alpha rhythm and responded to photic stimulation. The literature on this subject is reviewed and the possible modes of pathogenesis are discussed. The authors conclude that such examples of alpha-pattern coma are the result of diffuse cerebral damage and might be detected more frequently in comatose patients who survive if these patients are studied earlier in their clinical course with EEGs.
本文报告了两例高压电损伤后出现可逆性深度昏迷并伴有脑电图α波频率的病例。脑电图模式与正常清醒患者的α节律不同，其分布弥漫，对各种刺激无反应。引入“α波模式昏迷”一词来表示这种模式在昏迷患者中的出现。所描述病例的脑电图最初显示α频率的活动，呈弥漫性分布，对刺激无反应。在恢复的早期阶段，观察到θ波和δ波活动的发生率增加。恢复记录中包含低电压α节律，并对光刺激有反应。本文回顾了关于该主题的文献，并讨论了可能的发病机制。作者得出结论，这种α波模式昏迷的例子是弥漫性脑损伤的结果，如果在昏迷患者临床病程早期进行脑电图检查，可能会在存活的昏迷患者中更频繁地检测到。
