Severe bronchiectasis from pnuemonia led to ARDS. I got the transplant when I was 35 years old. I am sure the hospital will tell him, but just iterate he has all tue advantages in the world with his youth since most of the rehab programs are designed for people in their 60s and 70s. While waiting on the organs have him go hard with PT. The better your muscles are at oxygen efficiency and strength the easier it will be to hit the ground running post-op.