Honestly, with a 5min ETA why **** around ne longer then you really have to? Just load and go. Load and go will be the most important intervention you will give either of these patients in the absence of life-threatening, need corrected right now problems.
I had an MVC patient the other day that was literally 2mins from the hospital on the same street. He had a cardiac hx and was having anxiety and chest discomfort suspected to be from seatbelt. He got a cardiac monitor and 12-lead and right as the 12-lead was done we were backing in. I wasn't gonna spend extra time onscene asking 20 million questions, starting an IV, etc. when I could have this patient in the ED where he really needed to be.
Point being... regardless of ETA it takes very little time to throw electrodes on. But at the same time with a young patient, no PMH, and <5min ETA, the monitor really isnt a big deal in my opinion.
And if the radial pulse check correlates with the rate display on the pulse ox and patient is perfusing well, then I would trust the pulse ox in a stable patient for the short amount of time as described.
Everyone has their own thought and decision making process. The common thing to do is O2, IV, monitor, vitals... hmmm... really? We all know what the research says about everyone getting O2 so we can take that out. Does everyone really need an IV? Really? The same can be said about the monitor. Yes, its good to have it on for trauma patients to monitor rate and for ectopy but I certainly would not hammer someone for not applying it if they were busy doing an assessment or tending to actual patient injuries with a less than 5min ETA.
5 minutes to a Level 1 center with cardiac capabilities is one thing. 5 minutes to a community ED that is not able to handle an emergent patient is another. In this case it makes a lot more sense to spend a few extra minutes on scene to ensure you make the correct transport decision than doom the patient to an hour plus hour wait and possible death in the wrong ED