Use it in the OR, primarily in patients you want to minimize opioids in. Severe sleep apnea, etc.
With 1 hour to peak effect and the fact that is has to be given by infusion, I don't really see it being very useful prehospital.
Now ketorolac, that's another story......significantly under-used in EMS, IMO.
Interesting! How about for long transports, say? I looked at the onset time to effect, and it seemed long. Any idea if it's a lot more expensive than PO acetaminophen?