Final answer:
A Do Not Resuscitate (DNR) order is the legal document signed by a patient and physician indicating no resuscitative efforts should be made in the event the patient's heart or breathing stops.
Step-by-step explanation:
The legal document usually signed by both the patient and their physician, stating that the patient has a terminal illness and does not wish to prolong life through resuscitative efforts is known as a Do Not Resuscitate (DNR) order. A DNR is a form of advance directive that specifically instructs medical personnel not to perform CPR or other life-saving measures if a patient's breathing or heart stops. This document reflects the patient's wishes regarding end-of-life care and is a key element of planning for death with dignity. Another related document is a living will, which may include a health care proxy that appoints someone to make medical decisions on the patient's behalf should they become unable to articulate their wishes.