The Code of Ethics for Nurses was developed as a guide for carrying out nursing responsibilities in a manner consistent with quality in nursing care and the ethical obligations of the profession.
This site contains resources and information about medical ethics from the American Medical Association. Nursing students may be interested in their "Virtual Mentor" which is an interactive forum dealing with ethical and professional issues.
Evidence-based medicine is the "conscientious, explicit and judicious use of current best evidence in making decisions about the care of individual patients" Sackett, DL, Rosenberg WM, Gray JA, et al. BMJ. 1996 312(7023):71-2.