conflicting opinions about research treatment between patient and family or patient and provider?

How does a nurse deal with conflicting opinions about research treatment between patient and family or patient and provider?

To whom is the nurse most accountable, the patient, the family, or the physician?

How does a nurse balance these conflicting loyalties?

How does the Code of Ethics for Nurses guide you in spur-of-the-moment decisions when a response is expected momentarily?