Do they look up records? Is this ethical? Does this also happen in the US or other countries?

It’s the UK, they have the medical history. They also ask the patient about their situation.

And I made it sound mechanical, but AI has not taken over all decisions like this yet. I believe it’s a discussion between a team of doctors where they are considering the humanity and ethics of the situation as well as the cost. Like, what would be the impact on the child/dependent if the parent was to die, do they have another parent or family members they can live with, can they fend for themselves, etc.