“...Uncle said he had blood in his lungs ...
That sounds bad...........
This was yesterdays article with Uncle Glenn:
“ According to Glenn, Hamlin is now “flipped over on his stomach” in the hospital to help with the blood in his lungs.
“Doctors said that Damar is on his stomach to help take the pressure off the lungs, so they don’t have to work as hard,” Glenn said.
Glenn went on to say that the next step is to get Hamlin, who is still sedated on a ventilator, to breathe on his own.“
https://www.wlwt.com/article/damar-hamlin-collapse-nfl-family-shares-statement/42386452
A punctured lung and broken rib or 2 are a somewhat minor problem compared to death or brain death. As they sometimes say, the cure seems worse than the disease. When someone is dead/dying CPR can be extremely aggressive to get the blood flowing again.