Pray hard for the Bills player that just collapsed on the field! I believe it was Damar Hamlin! Breaks my heart!
I know a guy that had a brain stem injury from an ATV accident. He survived, but is severely handicapped. It didn’t paralyze him though. I initially thought brain stem because he kind of got hit in the face. But cardiac seems more likely.C spine/brainstem and you aren't getting up. I would think more likely cardiac or vascular, but dang he went down quickly.