Informed consent and advance directives.

Contrary to popular belief, a patient's signature on a piece of paper does not constitute informed consent. This article describes the ethical framework of consent in the context of the larger process of informed decision making. The elements of informed consent are examined in practical terms. Common pitfalls are addressed, with strategies to help anticipate and resolve possible dilemmas. These important tools are integral to all levels of medical decision making, including those at the end of life.