Once decision making authority has been conferred upon a health care representative pursuant to an advance directive, if the patient is subsequently found to possess adequate decision making capacity with respect to a particular health care decision, the patient shall retain legal authority to make that decision. In such circumstances, the health care representative may continue to participate in the decision making process in an advisory capacity, unless the patient objects.
Notwithstanding any other provision of this act to the contrary, if a patient who lacks decision making capacity clearly expresses or manifests the contemporaneous wish that medically appropriate measures utilized to sustain life be provided, that wish shall take precedence over any contrary decision of the health care representative and any contrary statement in the patient's instruction directive.
N.J.S. § 26:2H-63