Final answer:
Verbal instruction from family or friends does not validate a DNR or POLST. A written directive is necessary.
Step-by-step explanation:
A Do Not Resuscitate (DNR) or POLST (Physician Orders for Life-Sustaining Treatment) is a legal document that outlines a person's wishes regarding medical interventions in the event that they cannot communicate their desires.
While verbal instructions from family or friends may express a person's preferences, they may not be legally binding.
It is important to have a written directive, such as a DNR or POLST, to ensure that medical professionals and caregivers are aware of and can honor a person's wishes.