Jon Butcher Axis
Alternative namings and abbreviations for this order are used depending on the geographic region. (Do Not Resuscitate) is a common abbreviation in the United States and the United Kingdom. It may be clarified in some regions with the addition of (Do Not Intubate), although in some hospitals alone will imply no intubation. Clinically, the vast majority of people requiring resuscitation will require intubation, making a I alone problematic.
Some areas of the United States and the United Kingdom include the letter A, as in , to clarify "Do Not Attempt Resuscitation." This alteration is so that it is not presumed by the patient/family that an attempt at resuscitation will be successful. Since the term implies the omission of action, and therefore "giving up", some have advocated for these orders to be retermed Allow Natural Death. New Zealand and Australia (and some hospitals in the UK) use the term NFR or Not For Resuscitation. Typically, these abbreviations are written without periods between the letters, i.e. not
Until recently in the UK it was common to write "Not for 222" or conversationally, "Not for twos." This was implicitly a hospital DNR order, where 222 (or similar) is the hospital telephone number for the emergency resuscitation or crash team.
 compared with advance directive and living will
Advance directives and living wills are documents written by individuals themselves, so as to state their wishes for care, if they are no longer able to speak for themselves.
In contrast, it is a physician or hospital staff member who writes a "physician's order," based upon the wishes previously expressed by the individual in his or her advance directive or living will. Similarly, at a time when the individual is unable to express his wishes, but has previously used an advance directive to appoint an agent, then a physician can write such a "physician's order" at the request of that individual's agent.