Advances in science and technology have created a plethora of medical therapies in various forms including drugs, devices, and equipment. Many of these therapies are not curative, however, and patients sometimes find themselves being more burdened than benefited by them. These situations result in ethical dilemmas for which the bioethicist is sometimes consulted to resolve. Using philosophical principles of maximizing good, minimizing harm, being just, and respecting the values of others, the bioethicist counsels patients, families, and hospital personnel, sometimes functioning (...) as advocate, arbitrator, negotiator, mediator, and teacher. (shrink)