Final answer:
DNR stands for Do Not Resuscitate, a legal directive that prevents medical personnel from performing life-saving treatments like CPR if a patient's heart stops beating or they stop breathing.
Step-by-step explanation:
The acronym DNR stands for Do Not Resuscitate. A DNR is a legal document that communicates a person's wish not to receive CPR or other life-saving treatments if their heart stops beating or they stop breathing. This directive is an important aspect of end-of-life care planning and can be included in a living will or advance directive. Healthcare professionals such as doctors and nurses are obligated to respect a patient's DNR order. People's preferences for DNR orders are often shaped by individual aspects such as religion, culture, and personal beliefs about quality of life.