日本黑犊牛脑皮质坏死的脑电图。

M Suzuki, K Sitizyo, T Takeuchi, T Saito
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引用次数: 14

摘要

对3头1、2、14周龄的日本黑犊牛(CCN)进行脑电图检查,探讨脑电图异常与脑损伤的关系。其中2例患儿(病例1和病例3)出现了一些神经症状,如打转、失稳、抽搐和斜拉肌。另1例患儿(病例2)未见神经症状。两例小牛(病例1和病例2)在清醒状态下的脑电图显示恒定的高振幅(50-160 microV)和慢(1-4 Hz)活动(HASA)。其中一例(病例1)坏死主要发生在右半球,并表现出明显不对称的尖波。另一方面,病例3脑电图显示弥漫性活动降低,部分导联几乎持平。在所有三种动物中都观察到快速活动的减少。这些结果提示CCN患者的特征性脑电图模式之一可能是HASA和快速活动降低。小牛的组织病理学诊断为不同程度的CCN。脑电图的异常程度似乎与病变的严重程度一致。由于没有明显神经系统体征的小牛脑电图显示异常模式,因此认为疾病早期的脑电图检查对诊断CCN有价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electroencephalogram of Japanese Black calves affected with cerebrocortical necrosis.

Electroencephalogram (EEG) examinations were carried out on three Japanese Black calves (1, 2 and 14 week old) affected with cerebrocortical necrosis (CCN) in order to investigate the relationship between EEG abnormalities and encephalic lesions. Some neurologic signs such as circling, astasia, convulsion and opisthotonus appeared in two of the calves (case 1 and 3). The other calf (case 2), however, showed no neurologic signs. The EEGs obtained from the two calves (case 1 and 2), in the awake state, showed constant high amplitude (50-160 microV) and slow (1-4 Hz) activity (HASA). One of these (case 1) had necrosis mainly in the right hemisphere and showed a markedly asymmetric sharp wave. On the other hand, in case 3, the EEG showed diffuse lowered activity, and almost flat in some leads. A decrease in fast activity observed in common with all three animals. These findings suggest that one of the characteristic EEG patterns of CCN patient may be HASA and decreased fast activity. Histopathologic diagnoses of the calves were CCN in various degrees. The degrees of abnormality of the EEGs seemed to accord with the seriousness of the lesions. Because the EEG obtained from the calf having no obvious neurologic signs showed an abnormal pattern, it was considered that EEG examinations in the early stages of disorders are valuable to diagnose CCN.

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