One Week Study (OWS) of the Japan Neurotrauma Data Bank was conducted to elucidate the actual status of head injury in our country in both 2005 and 2012. In this article, the data in OWS 2012 was compared with those in OWS 2005, to clarify the recent state of head injury.
All the patients, who admitted to the hospitals due to head injury, were enrolled. Eight hundred and two patients were registered from 321 institutes in OWS 2005, and 682 from 297 institutes in OWS 2012. Analyzed factors were age, cause of injury, Glasgow Coma Scale (GCS) score, CT findings, Incidence of multiple systemic injury and neurosurgical operation.
Results: In OWS 2012; The patients were older (p<0.0001), and traffic accident was less frequent (p<0.0001). Four wheel vehicle and bicycle accidents were more frequent and pedestrian accident was reduced in traffic accident group (p=0.0373). GCS score did not differ significantly between two groups. The abnormal CT findings were more frequent (p=0.0373). Focal injury was most common, followed by combination of focal and diffuse injuries. Multiple systemic injury was more often, but the percentage of neurosurgical operation was not increased significantly.
These results indicated that the aged patients injured by fall or tumble has increased recently. The complicated intracranial lesion and multiple injury also have increased in rate, despite the clinical severity was unchanged.
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