Protocols!! This is why I love protocols. Protocols just keep us from look like a complete idiot, and use our own brain.
Yes, oxygen is a drug, but, for real, are you telling me that I need to call a doctor every single minute, to titrate oxygen on my patient? Are you serious?
Most doctors who I work with (and most of them are really nice), will throw me under the bus, if that's the case. Obviously, if I feel that my patient need an high flow oxygen device, or he/she is getting unstable, I call the MD for sure.
In my 2 current jobs (ER, and prision), we have protocols for almost everything. Pain management (except opioids), chest pain, trauma, altered mental status/agression, asthma, possible anaphylaxys/angioedema, shock, Dyspnea, hypotension, fever, etc etc.
In my last job (nursing home), the doctor's staff had the iniciative to create some protocols as well, just to avoid calls for some "stupid" things: "Hey dr. XXX, it's nurse YYY, I apologyze to bother you so late, but I just check the temperature on Mr ZZZ, and he had 38.5 ÂºC. I just check your orders and I don't see any acetaminophen prescribed. I wonder if I may give some??"
Give me a break.