Thank you for your reply. Unfortunately, I didn't get a copy of the sleep study from the medical specialist. I use a ResMed AirSense 10 machine with a nasal pillow mask (P30i) and the auto-adjusting settings. The average pressure has been 10.9 for the last 30 days.

1. Using a professional at-home sleep apnea test for one night, I was diagnosed by a medical specialist with servere sleep apnea (55 episodes per hour). I had previously used the Wellue O2-ring pulse oximeter for several nights. According to the O2-ring, I had about 2-3 drops per hour, measured as d...