Babysitting doctors?!

Readers beware this is a rant. So I had 4 out of 5 pts today who required alot of intervention. I don't mind but I felt that a couple of times my concerns fell on deaf ears. This made me feel like I was over reacting, after all if the Doc wasn't concerned then maybe I shouldn't be. I have been at this nursing thing for 6 months now so I am still a little green. At the end of my shift I sae the respiratory therapist and had to update him on a pt because I thought that it was interesting that after she was made a full code the Doc didn't think it that the blood gases from the morning when she was DNR/DNI needed any attention (they were 71 Co2). The respiratory therapist explained to me that we should have sent her to the unit if she was no longer DNR/DNI and now I feel like a ****** nurse because I didn't push the issue with the doc. I just explained to him the change in status and did not suggest that we draw another ABG to see if she would need to be intubated. I then ask another very smart nurse about this and she said that a mediocre nurse would not be concerned about that but if I want to be a great nurse I need to babysit the doctors, PT, dietary, and basically anyone who is involved with the care of the patient. All I have to say is I WILL find my voice and I just want to scream to the bellows ***!!!!!!!!!!!!!!!!!!!!!!!!