A Don’t Resuscitate order is a medical order, signed by a clinician, covering exactly one scenario: your heart or breathing stops [1]. It says don’t attempt CPR. That’s the entire document.
A DNR doesn’t mean don’t treat. It doesn’t limit antibiotics, surgery, pain control, oxygen, hospitalization, or anything else [1]. Patients with DNRs get full aggressive treatment for everything short of resuscitation every day. Families refuse DNRs because they think it means abandonment. It means one thing: when the heart stops, let it.
Why would anyone choose that? Because CPR isn’t what television says it is. On TV, most coded patients wake up embarrassed in a clean gown. In reality, roughly one in ten people who arrest outside a hospital survive to discharge, and about a quarter of those who arrest inside one [3].
For frail older adults with advanced illness, the odds fall further, and the process itself is violent: CPR can break ribs, and it's less likely to work for frail older adults with serious illness [4]. For some people that gamble is worth it. For others it’s a bad death appended to the end of a long illness.
A DNR is how you decline the gamble in advance.
One trap: a DNR entered in your hospital chart lives in the hospital. At home, you need your state’s out-of-hospital DNR form, bracelet, or the next document, or EMS will do what the default demands [1].