I knew I had to do something and my doc is not the most sociable person on the planet either which is why I had to take matters in my own hands and after researching pressure Vs Apnea events, I found that there is a lot of medical opinion out there that connects high pressures to an increase in apnea episodes, particularly for OA patients whom high pressures appear to cause them to have CA episodes
To prove the validity of this opinion, I have been experimenting with Maximum pressure support and find that as I increase it (effectively increasing my IPAP Max), my AHI also increases by several folds per CMH2O.
In fact I persistently get an AHI of only less than 0.5 at IPAP max of 14 and I can increase my AHI to between 3 and 4 when I increase my IPAP Max to 17, an increase of 6-7 folds in AHI with a mere 3 CMH2O increase in pressure.
My experiment methodology is simple: (ASV setting won't let you go below PS Max of 10 with a min EPAP of 4=total IPAP Max 14)
I will be doing several studies for the next couple of weeks to get a reliable statistical repeatability of my results, however all indications are that there is a positive correlation between IPAP and AHI .
Below are a couple of examples.
.