medical power of attorney
(MEH-dih-kul POW-er ... uh-TER-nee)
A type of advance directive that gives a person (called a proxy) the authority to make medical decisions for another person if that person is not able to make their own decisions. A proxy is usually a spouse, relative, friend, or lawyer who knows the person's values, wishes, and treatment preferences. Also called durable power of attorney for health care and health care proxy.