What Is The Prognosis Of A Patient With Traumatic Brain Injury And Hydrocephalus?

My brother had a traumatic brain injury and has been in Coma fr last 33 days He devoloped hydrocephalus after tht Docs have inserted a reservoir bag and a shunth He is 23 years old , now he responds to pain , yawns, makes face movements while sunctioning and breathes without ventilator Can he come back Rahul Dutt