What's a do-not-resuscitate dnr order?

DNR. Is parsed into "levels", but hospitals assume that all patients want "full code" - intubation, counter shock and icu, even in ases where there are no expectations that the underlying conditin can be cured, or meaningful, enjoyable prolongation of life can be sustained. Prolonging suffering and death can ensue, so it is very important to clarify what you r a loved one wants rather than waiting.