I am looking for information or articles about the effect of sleep when a person is in any way mortally injured. The classic reaction is to avoid sleep in order to keep alive. The victim of the injury tries to keep awake in order to not die. Does the situation imply that the victim is feeling drowsy or sleepy as a reaction to the injury and as a process of dying? What are the chemical and physical processes that occur in the body in the process of death or near death related to a mortal injury, and does not sleeping actually keep the person alive?