Final answer:
If a patient with a valid DNR order expresses a wish to be resuscitated, you should follow their wishes and initiate full resuscitative measures.
Step-by-step explanation:
If a patient has a valid Do Not Resuscitate (DNR) order but expresses a clear wish to be resuscitated in the event of cardiac or respiratory arrest, you should follow the patient's wishes and initiate full resuscitative measures. The DNR order only applies if the patient does not express a desire to be resuscitated. It is important to respect the patient's autonomy and ensure their preferences are honored.