A growth on the artery wall is 'choking off' the blood supply.
He was 'choking back tears' as he talked about his late wife.
She 'choked' to death. = She died by 'choking'.
(..) I won't go that easy. As long as I live, I'll claw at you. And if I die, I'll drag you beneath the ground beside me! With the last of me, I'll choke the life from you! No. I'll make myself whole again, I swear, and when I do, I'll kill you! - No more killing. - You did this to me! (..)2016 Ben-Hur