Respecting wishes of parents on end of life care
I'm committed to respecting their wishes there, but I don't think my siblings are. I'm foreseeing a scenario where my parents have dementia and are set to go in for an invasive surgery with minimal benefit that I do not think they would want, but my siblings disagree and the medical establishment wants to overtreat.
What should my parents be doing now to ensure their wishes are clear / respected?
Or is the issue of the hospitals keeping people alive at all costs an American thing?