This document provides definitions and explanations of various types of advance health care directives, including living wills, durable power of attorney for health care, Do Not Resuscitate (DNR) orders, and organ donation. It explains that advance directives are legal documents that allow individuals to specify their wishes for medical treatment and assign a health care proxy if they become unable to make decisions. A living will provides instructions for life-sustaining treatment if terminally ill or permanently unconscious, while DNR orders indicate a wish not to receive life-prolonging treatment when close to death. Durable power of attorney appoints a health care agent to make decisions on one's behalf. Organ donation allows individuals to donate organs or tissues upon