Hopefully Nancy will be along - I'm sure she can give you a few good ideas. As far as children are concerned - do you have a Child Life specialist in your area? If so (s)he may have some really good ideas - otherwise you might get some good info from here:
http://www.childlife.org/
Good to hear your unit wants more information.
As a personal note, while I think it would be great that my (child's) nurse be an advocate I'm not sure that it would necessarily work that well. Too much danger of putting the nurse in the line of fire between the hospital and the patient - great risk of conflict of interest. I don't know too many nurses who can afford to lose their jobs by taking a strong stand that might be contrary to insurance company / hospital administration / doctor. An independent resource person or well trained friend/family member would be a better choice for me. The questions are, how do we train friends & family and how would we pay an independent resource person.
I have some thoughts, IF you are asking IF we would like the nurse to be the advocate, like Chris don't think a nurse would be the best choice,for the reasons she mentions it could be hard on them to advise against what the doctor says, and as a parent I would never be sure who the nurse was looking out for, even if the nurse meant well .
Child life, I never found that helpful to me as a parent, but great for the child,to help them feel comfortable,and not afraid, find things for them to do ect. if that makes sense. Honestly, in my experience a great social worker seem to me to be the best advocates and it kind of is what alot of them do as they help the parent navigate everything they need to deal with and put together, Insurance, home health, government aid, if they are eligable, early child developement, feeding clinics.... and since they don't work below doctors on the chain so to speak,like nurses, but more seperate, they don't have to worry about alot of things nurses would, or that parents could think nurses would. (like I might think the nurse would worry about continueing to have to work under a doctor, if she sides with the patient/family) I'm not explaining this well.
The problem I see if alot of parents are very happy, not understanding exactly what their childs CHDs are, as long as they know the name of the CHD and the name of the surgery, they are fine and don't want to know more and there are parents on the other end, who want to know EVERYTHING and want to feel like one of the team members and really listened to, so I imagine it is hard to make everyone happy and try to figure out which type of parent they are.
However IF you are asking, what we found that worked well with nurses advocating for our child. The most important thing to me is nurses really listening to parents and understand we do know our child and if we say something is wrong, this isn't normal, believe us and don't make us think we are over reacting. Also I find it very helpful after a little while after the doctors leave the room in the morning, stop by after we had time to take in everything we talked about and think of a question we should have asked, and ask if we have any questions or is there anything that is going to happen that day that we would like explained a little better ect. Sometime especially right after surgery or in the unit, you get a little over whelmed and sleep deprived and when the docs come to talk to you , you are trying to take everythig in and don't think of your questions until after they leave.
The last time Justin was at CHOP they added those wipe boards that each day they came in and wrote our nurses name for that shift on it (which I really appreciated, but it was also if there was somthing we wanted to ask about, we could write it on the board so we would remember when someone was in the room.
OH the most important thing to me,and I'm sure you know this growing up with TOF, but IF you are talking about a child in the same room as the child, PLEASE don't act like they are not there, especially as they get a little older, include them in the conversation, if they are paying attention and not trying to pretend you aren't there playing there video games ect. Ask if THEY have any questions. Most nurses and doctors in children hospitals are great at that, but some arent.