''Advance Health Care Directive (AHCD)
AHCD is the term used in California for a combined document that takes the place of a “Living Will” and a Durable Power of Attorney for Health Care. It allows you to name agent(s) to make health care decisions when you can’t make them yourself and state what
treatments you want or don’t want and under what circumstances. The document can do one or both.''
Through genetic testing etc you discover someone with compatible tissue etc/or someone you want for what ever reason … accident .. family says they want to keep them alive .. "Oh no, they had an AHCD saying they didnt want to be kept alive"