My Grandson Stabbed His Brachial Artery In Attempt To Commit

My grandson stabbed his brachial artery in attempt to commit suicide. He was revived after 13 minutes. Medi flight to hopital. Lost him on trip & revived.2x. It's been 2 weeks since repair surgery, a week in ICU. His kidneys have since shut down, he's on continuous dialysis, has pneumonia, on oxygen with a pressure mask to keep O2 up. Extremely high white blood count. He just turned 24. Sept 1st.we are so worried. Do you think he has a good chance of survival?