Informed consent and the ethical management of the older patient.

Informed consent in elderly patients presents many ethical and legal challenges. Most aging patients are competent to provide consent for medical care. The purpose of informed consent is to promote autonomy, to protect a patient from undesired treatment, and to help the patient to make appropriate medical care decisions that correlate with his or her personal values. A surrogate decision-maker should be sought for an incompetent patient. Advance directives are legally and ethically binding tools by which patients can express their decisions regarding medical care before they lose capacity to do so. Discussion of do-not-resuscitate orders is part of informed consent, and patients' wishes regarding resuscitation in the operating room should be respected. Surrogate consent for participation in research is not necessarily allowed by IRB approval and research protocols.