If you got the bucs to buy your pulse ox, go right ahead, but if it breaks or gets damaged - you will be responsible for the repairs.
Purchasing one's own pulse oximeter can be tricky when it comes to "preventive maintenance" and validity of the data. Any our electronic equipment must be calibrated every 6 months. If you treat a patient off numbers given to you by your personal equipment, you may have to show proof that it is regularly calibrated and maintained by a biomed person if any incident occurs.
Several hospitals' risk managers and attorneys posted memos to all hospital personnel from RNs, RRTs, Flight or EMS based there to not carry their own pulse oximeters unless the Biomed department approved them.
I have seen some very erroneous numbers on some of the personally owned devices and even the properly maintained ones owned by the hospitals. Of course one has to be familiar with these devices and PATIENT ASSESSMENT to know the numbers are questionable. At least it doesn't belong to me and I can just hand it over to the agency's Biomed department.
Of course, in the prehospital environment, one may not get into too much trouble in a short time. If they are using the numbers as a guide to intubate or other course of treatment on a borderline patient, then accuracy is nice to have. Of course, I do not rely on pulse oximeters to determine my course of treatment for the patient either in or out of the hospital. Too many people waste precious minutes "trying to get a sat" or "I don't
think it's correlating" or "Let me try all the other fingers to see if I get the same number on them".
That also applies to the electronic BP cuffs. Good assessment is knowing when the manual BP cuff is the more appropriate device to use.
Manual BP cuffs and stethoscopes are not an issue with most biomed people but also should have regular maintenance by you. However, the manonmeters may need to be calibrated on a regular bases to assure quality results.
Electronic BP machines must also be calibrated regularly to maintain accuracy.