We were called to to an 87yoF C/C abdominal pain. Upon arrival, we find the patient in obvious respiratory distress and C/O chest pain 10/10 that radiates around the right side to her back. Initial vitals: Pulse 200+ (too fast to count), Pulse on Pulse Ox 230, SPO2 on RA was 79%, patient was diaphoretic and had a HX of HTN and Renal Failure.
We put her on 15lpm O2 via NRB and do a PUHA to an ALS intercept. By the time we met with ALS, her pulse was 113, SPO2 was 96% and her pain was at a 5/10.
The reason I bring this call up is this. By our protocols, EMT-B's can only give 15lpm O2 via NRB. They can't dial it down if the patient doesn't need that much O2. As an EMT-IV, I can titrate the O2 to keep the patient's sats above 90%. Most of the time, I leave it a 15lpm (as I did in this case), but sometimes I will drop it down to 10lpm. It's nice to have that option for certain patients (COPD), and if it requires a Pulse Ox, then so be it.
I know we're all taught that we don't treat our equipment, but treat the patient instead. However, Pulse Ox before and after the administration of O2 is a great way to determine how effective the O2 is.