Is it possible to say the following to the nurse?
"While I'm talking to you, and then you're going to talk to the psychiatrist, then you will get back to me - wouldn't it be faster, more efficient and more effective for the psychiatrist to give me a quick call? Or better yet, when can I make the call to psychiatrist, or drop in to see the psychiatrist personally? I want to expedite this to assist you to help my child. Better communication has to make your job easier."
Always find an angle that makes their life easier.
Marg