Hi. My grandmother knows more about medicine than you will ever know, my brother was the Commander of the tenth medical wing for USAF and had over 10,000 service members and their families under his care - director of the VA and currently runs the largest hospital group in a particular state... (Timothy Dean Ballard, MD Col. USAF - if you care to fact check my bullshit) and the personal flight surgeon to the joint chiefs at the pentagon (general Shelton)... Ive built more hospitals than you have stepped in....
My aunt is the head NICU nurse at El Camino Hospital in Mountain View Ca, (the hospital of the future) one of the many hospitals I built... (el Camino, UCSF, SFGH, Sequoia, Nome, Methodist) yeah im a little closer to this subject than you may have assumed.
And if you think an ER nurse "just does what a doctor says"
You know absolutely nothing of top nurses. They wear the pants.
I'm comfortable with my statement. So, thankfully you don't know what to say.