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The Factors Influencing Posttraumatic Epilepsy;Multicentric cooperative study Keyword: Posttraumatic epilepsy , Statistical study , Risk factor , Multiple regression analysis pp.1151-1159
Published Date 1991/12/10
DOI https://doi.org/10.11477/mf.1436900367
  • Abstract
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A multicentric cooperative study was performed to investigate the factors influencing posttraumatic epilepsy. The patients with fresh head injury from 1983 through 1990 were entered in this study. The cases were divided into two groups and followed-up for five years ; the patients with severe head injury and who satisfied the criteria belonged to group I. Those with mild head injury were classified into group II. The criteria for group I was that the patients had one or more of the following risks; disturbance of conscious-ness, bloody cerebrospinal fluid, focal neurological sign, depressed fracture or basal fracture, abnormal CT, du-ral tear, early convulsion and/or linear fracture. After drop-out cases were excluded, 191 cases out of 241 were analyzed. The number of cases was 126 (66.0%) for group I and 65 (34.0%) for group II. Six-teen patients (12.7%) of group I developed seizure, whereas nobody of group II experienced seizure. The difference between the patients with and with-out seizures was analyzed. The statistical significant difference was discovered in the following factors ; dis-turbance of consciousness (GCS and the duration), foc-al and generalized neurological sign, abnormal CT, mul-tiple risks, intracerebral hematoma, surgery, alcohol drinking and abnormal EEG a month after the injury. The relative risk rates were calculated. The highest risk for posttraumatic seizure was disturbance of con-sciousness extending over more than one month. This was followed by five other indicators of risk; abnormal EEG at one month, surgery, focal neurological sign, alcohol drinking, generalized neurological sign, and in-tracerebral hematoma.

Multiple regression analysis suggested that the post-traumatic seizure occurred most likely in the patient who suffered from generalized neurological sign, with early convulsion and/or having abnormal CT one month after injury.

It was concluded that the severity of cerebral injury was highly related to the occurrence of the posttrauma-tic epilepsy.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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