I often wondered if my AH had some sort of emergency medical problem, would I give First Aid and phone an ambulance. Or walk away and leave him to die.
I got my answer when he did indeed have a problem, he was choking on some food, couldn't breathe. Without hesitating, I gave First Aid and called an ambulance. He survived. He had a stroke some time later, I reacted the same way.
It is such a roller coaster of emotions being with an A. I have heard others share at Al-anon meetings that they also wonder if they would leave their AH to die or get help.