That's about as simple as it gets. This is a pediatric ICU ward, I just wanted a picture that shows you the essentials. It can get much more complex than that and not a whole lot simpler. Once you are intubated you are kept sedated (it's not exactly a pleasant experience) so you rely 100% on the world around you for your vitals and needs. Essentially you are in a controlled coma for the duration with all the difficulties that brings.