I know there has been some focus on heroic measures in this discussion, but I also think it's important to say, as someone who is a practitioner in the tertiary care centre, that I've seen many people who have been judged to have irremediable illness in the community, who are referred to our service and who receive higher-level psychiatric treatments, such as neurostimulation, and some of the older medications we have, such as monoamine oxidase inhibitors. Without great difficulty, we're able to essentially change their situation from being irremediable to remediable.
The concern here is that people will be inappropriately considered irremediable, when in fact you don't need heroic measures. You just need really solid care to alleviate suffering.