详细情况在这里：

Do not resuscitate (DNR), or no code, is a legal order written either in the hospital or on a legal form to withhold cardiopulmonary resuscitation (CPR) or advanced cardiac life support (ACLS), in respect of the wishes of a patient in case their heart were to stop or they were to stop breathing. "No code" is a reference to the use of "code" as jargon for "calling in a Code Blue" to alert a hospital's resuscitation team. The DNR request is usually made by the patient or health care power of attorney and allows the medical teams taking care of them to respect their wishes. In the health care community, allow natural death (AND), is a term that is quickly gaining favor as it focuses on what is being done, not what is being avoided.[citation needed] Some criticize the term "do not resuscitate" because it sounds as if something important is being withheld, while research shows that only about 5% of patients who require CPR outside the hospital and only 15% of patients who require CPR while in the hospital survive.[1][2] Patients who are elderly, are living in nursing homes, have multiple medical problems, or who have advanced cancer are much less likely to survive.[3]

A DNR does not affect any treatment other than that which would require intubation or CPR. Patients who are DNR can continue to get chemotherapy, antibiotics, dialysis, or any other appropriate treatments.