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While reviewing my sleep reports in Sleepyhead, I notice that I nearly always have a big increase in central apneas in the hour before I wake. I believe that these may be responsible for me feeling in a fog until noon.
Has anyone else noticed this? Has anyone found the reason and what can be done to reduce these central apneas?
My all night AHI hovers around 5-7, but just before waking it can shoot up to 19, with nearly all central apneas.
I have been using a Respironics System One BIPAP machine for 4 years. It is much more comfortable than my old CPAP machine. I have it set up for 13 on inhale and 8 on exhale. After raising the head of my bed, my AHI is down to around 6-8 each nite. Recently, I notice that my central apnea in my Sleepyhead reports is the major part of my AHI. Are there some types of machines (APAP or ASV) that are better at reducing central apneas? Or are there other methods than a new machine that will reduce my number of central apneas? Does anyone know what causes them?
