Within the frame of traumatic pathology, head injuries prevail due to their frequency and their severity. While a lot of them have a moderate severity only, some are life threatening or result in very important sequelae. Head injuries are therefore the first cause of mortality and of severe disabi1ities main1y.
This paper analyzes 176 cases of severe head injuries with a traumatic unconsciousness exceeding 24 hours. All the patients were admitted to the Intensive Care Unit of the Neurological Hospital "Pierre Wertheimer" in Lyon.