While they haven't come right out and said it, we all know what it means - they are sending him home to die. *sigh*
He *could* still rally, he could stay in the delusional limbo he's in for quite some time...but we doubt it.
It seems the blood is coming from a hienal (I know I butchered the spelling; bite me) hernia right under his heart. He isn't strong enough to survive the surgery (the doctor said at this point, surgery is "elective"); if they have to operate, they will, but we know what the outcome would be.
So, there it is.