A play off my sleep study post ??

I keep saying that she put me on oxygen in the midde of the night, but someone askd me below if it was a cpap machine  or oxygen, now do I know ?  It was tubes in my nose connected to a generator??  Which one is this ?   My oxygen level dropped lower than 88 % longer than a 5 minute period...

She put you on a c-pap machine.