Would an injured child being sedated for their own safety be a helpful thing to do?

Yes if done by a pro. Dental & medical professionals can properly administer sedative agents to an injured child to allow for proper dental or medical treatment to be performed. When a child is under sedation, important monitoring instrumentation is needed to make sure that the child's vital functions are maintained. If a suitable child is safely sedated, properly trained individuals can help if an emergency occurs.
If behavior dangerou. If the behavior of the child is a danger to themself, sedation until the situation is stabilized would be very helpful.