Jill Tucker, RN says:

“Requests for ‘Patient Advocates’ are on the rise. Patient Advocates—often RN’s or licensed healthcare professionals—can be at the bedside of the patient during hospital stays, or accompany them on doctor’s visits. With revolving-door hospital policies that nullifies the priorities of the patient, Patient Advocates provide a strong and clear voice that rises above the hospital din, and assures that the patient is heard.”
If Only The Patient Had An Advocate

KevinMD.com  May 1, 2013