An Advance Directive can vary from state to state. The Oklahoma Bar Association says Oklahoma’s Advance Directive for Health Care allows a person, 18 years of age or older, to inform physicians and others of their wishes to provide, decline or withdraw life-sustaining medical care and to donate specified organs when they have been diagnosed by the attending physician to be in a terminal condition, a persistently unconscious state, or an end-stage condition. The Advance Directive also allows you to appoint a health Care Proxy to make certain decisions on your behalf.
It is important a patient know they can change their mind at any time. A patient can revoke it in whole or in part and in any manner when communicated to their attending physican or other care provider or a witness to the revocation.
For more information on an Advance Directive in Oklahoma, check out the website www.okbar.org/public/brochures/advanced.htm.