How is sating on room air spelled Is it sating or satting?

It is satting on room air.

I am not sure about the "satting" on room air. When a someone, physician etc, says the patient is "satting" they are referring to the oxygen saturation. To be correct, they should say "saturating" but they are shortening it to "sat-ing". In the medical transcription world, it is not transcribed unless specific instructions are given by the client...Otherwise, a sentence with "satting" would be transcribed as....

The patient was saturating at 99% on room air. OR

The patient's oxygen saturation is 99% on room air.

I have seen it given in the vital signs and written:

O2 saturation 99% on room air. OR. Oxygen saturation 99% on room air.

If this is for a report on a verbatim account--I would use "saturating", not "satting.