Predicting brain injury severity 　To be precise, it is a predictor of the severity of closed head trauma, but it is said like this. 　First, in mild cases, the time of loss of consciousness is considered to be less than 30 minutes and the time of posttraumatic amnesia is considered to be less than 24 hours. 　Loss of consciousness is defined as a period of time during which the patient is unconscious and does not respond to stimuli from the outside world. 　It is within 30 minutes, which is about the time that the patient is aware when the ambulance arrives or in the ambulance. 　Posttraumatic amnesia is difficult to understand, but it refers to the time from the time of the trauma to the time when the patient has no memory of the trauma, but has a recollection of the trauma. 　If, as is often the case, the patient remembers from the time he or she left the ICU, or from the time he or she went to the second hospital, but has no memory of the first emergency room, then the period of posttraumatic amnesia is the time from the onset of the trauma to the time of transfer to the hospital. 　And the length of these two periods correlates quite well with the subsequent severity of the injury. 　So how long is a moderate brain trauma? 　The duration of loss of consciousness is between 30 minutes and 6 hours. Posttraumatic amnesia is between 24 hours and 14 days. 　Severely traumatic is defined as loss of consciousness for more than 6 hours but less than 7 days and posttraumatic amnesia for 14 days to 8 weeks, and extremely traumatic is defined as loss of consciousness for more than 7 days and posttraumatic amnesia for more than 8 weeks. 　However, these days, this is not skillfully applied, as unconsciousness and violent outbursts may be medicated or treated with hypothermia. 　These indicators are especially important in car accidents, so it is important to check with the doctor to see what time of the day it was that the family member who had no reaction at all reacted, and to be clear about when he or she remembers. 　However, many severely injured people do not remember anything from two or three days ago, and when asked how long they have remembered, some say they do not know. 　In the case of a car accident, it is important from the beginning to record everything in a notebook, such as the person's condition, the hospital's explanation, the difficulties faced by the family, and the amount of money spent. If you do not, your memory will become complicated and difficult to understand later on. 　Think back to the beginning of your or your family's head injury.