The trial takes place in a non private hospital in Denmark. Patients are recruited from two wards treating patients with severe brain injury, and all patients admitted in the study period are considered in regards to inclusion or exclusion. Patients are included via closest relatives accept, and the patients GP(General Practitioner). Any adverse effect or event will be reported to the local ethics committee. All data will be collected simultaneously with the interventions. Some data will be directly recorded via monitor output, and some data will be directly inputted in Epidata, while trial takes place.