Bockenheimer S, Voigt K
Arch Psychiatr Nervenkr (1970). 1978 Jun 5;225(2):163-72. doi: 10.1007/BF00343400.
The absorption of gas after encephalography in different groups of patients was investigated in a long-term follow-up study. Group I (11 patients) showed no pathological findings in the encephalogram. Group II (8 patients) had encephalographic signs of diffuse cerebral atrophy. Group III (7 patients) demonstrated in the encephalogram characteristics of normal pressure hydrocephalus with variously located blocks of air in the subarachnoid space. In group I the gas located in the subarachnoid space had usually disappeared after 24 h, in some cases after 72 h. In group II the pattern of resorption was basically similar, although in one case cortical air could be seen at 96 h. In group III the absorption of air from the subarachnoid space began after 72 h in radiological relevant amounts. In none of the cases of group III could similar short times of resorption be seen in comparison to group I. It is considered that these two groups can be clearly distinguished from each other in the duration of resorption of air from the subarachnoid space. The importance of encephalography as a pathophysiological tool for investigation of both the disturbed resorption and circulation of the cerebrospinal fluid in normal pressure hydrocephalus is stressed.
在一项长期随访研究中，对不同组患者脑造影术后气体的吸收情况进行了调查。第一组（11例患者）脑电图无病理发现。第二组（8例患者）有弥漫性脑萎缩的脑电图征象。第三组（7例患者）脑电图显示正常压力脑积水的特征，蛛网膜下腔有不同部位的气体阻塞。在第一组中，位于蛛网膜下腔的气体通常在24小时后消失，有些情况下在72小时后消失。在第二组中，吸收模式基本相似，尽管在1例患者中96小时时仍可见皮质气体。在第三组中，蛛网膜下腔气体在72小时后开始以与放射学相关的量吸收。与第一组相比，第三组中没有一例能观察到类似的短吸收时间。认为这两组在蛛网膜下腔气体吸收持续时间上可明显区分。强调了脑造影作为一种病理生理学工具在研究正常压力脑积水中脑脊液吸收和循环障碍方面的重要性。
