This power to consent is limited to the terms of this subsection (9) and shall not be construed to repeal or otherwise affect the prohibition of Section 41-41-211(9) relating to owners, operators, or employees of long-term health care institutions. The consent given pursuant to this subsection shall be limited to the health care services determined necessary by the licensed physician and shall in no event include the power to consent to or direct withholding or discontinuing any life support, nutrition, hydration or other treatment, care or support.