Based on the show the ER does everything themselves. I would never get called in! Whoo. Literally crazy stuff like delivering a high risk baby with shoulder dystocia while the OB watches 😂... Most ERs (every one I've ever worked with) the doctors won't even get up from their computers to try a catheter if the nurse struggles. Let alone the stuff they do without specialists in the show. There's exceptions but... They are exceptions.