For me, as a licensed medic. And depending on what you are carrying in your kit. I am pretty well stocked, and can treat basic medical, trauma, ortho, drop fluids, dental, sutures. The vitals, HEart rate, O2 sat, BP, Resp rate, etc tell us and allow us to trend how the PT is doing. Giving us a look at the organs and vitals inside prior to them appearing on the outside. From this we can gauge, if the meds have helped, if they need them, is this an EVAC ASAP, (triage) or can we takeout time. Gauging the seriousness of the condition, what stage of shock they may be in. When im taking a large group, ( think remote expedition, long term) I take vitals prior on my team so I know where there baseline is. Most the time, honestly its going to be " clinic, or basic sick call stuff" upset stomach, fever, bites and stings, stuff that can be treated with OTC meds.I'm wondering what the purpose of carrying BP cuffs/O2 monitors and the like are for some? If you're in the wilderness far away from help/EMS/hospital what good with diagnostic equipment do with nothing to treat with?
Is there a specific condition you are thinking of?