I think people fail to realize these are drama's (TNT is all about drama LOL) or dark comedies (Nurse Jackie). If you want something real, change the channel to discovery health. You can see the REAL lives of the medical community there. There are a BUNCH of reality series from the 90's to early 2000's like Hopkins, etc.
One of the reasons Jada is doing that show is to kinda honor her mother who happens to be a Nurse. But it's tv, to keep the audience as a whole who will most likely not all be nurses, things will not be realistic. I doubt secretaries or people who work for office supply stores look at The Office as a reality tv show :D , or that law enforcement or the justice field look at Law and Order as realistic, it's entertainment.