, hello
It's good that you had another study. Have you found anything out after your appointment? What did they do to to bring your number back up?
When my numbers change, they are able to adjust the settings on my machine.
Over time, our breathing can change even though we are using a C-Pap. Here is a very good article by Genna Nielsen, RRT.
https://sleepapnea.sleep-disorders.net/living/doctor-discussions
Hoping that you get restful sleep.
Janet (SleepApnea.Sleep-Disorders.net Team Member)