Post
by Dog Slobber » Sat Sep 14, 2024 9:34 am
Although your Apneas are well treated, your minimum pressure is way too low, and your maximum pressure *might* be too low as well.
The huge up and saw tooth movements suggest too low pressure. If you take a look at timing of the pressure increases and compare them to your Flow Limitations and Tidal Volumes, you will see a pattern that resembles our REM sleep patterns. 30 minutes of increased volume every 90 minutes or so. Looking at Respiration Rate will probably also show similar volatility within the expected REM pattern.
What I suspect is; the very low minimum pressure is fine for your non-REM sleep, but when REM comes along, you lose a lot more patency, the machine has a long way to catchup increasing pressure to handle the increased need, and that's why your FLs increase.
Did your sleep study note a lot more events during REM?
The timing of your awakenings also follow REM patterns. This is actually quite normal and many experience awakenings at the end of of during REM, as this is when our brain activities reach almost normal levels and we are simply not in as deep a sleep.
Increasing your minimum pressure 7, 8 will help flatten the trace, and potentially won't need to go as high, but still might be too low.
By reducing the FLs, that might get you through the REM cycle without awakening.
Also contributing could be, simply not being accustomed to CPAP, and the higher pressure during REM, and that sometimes takes time.
Battery Backup: EcoFlow Delta 2
