(1) If a POST form is validly executed after a patient advocate designation that contains written directives regarding medical treatment, or another advance health care directive that contains written directives regarding medical treatment, the medical orders indicated on the POST form are presumed to express the patient’s current wishes.

  (2) If a POST form is validly executed after a do-not-resuscitate order is executed under the Michigan do-not-resuscitate procedure act, 1996 PA 193, MCL 333.1051 to 333.1067, the medical orders indicated on the POST form are presumed to express the patient’s current wishes.