For what it is worth, it seems SleepyHead creates a folder for every day's data and there are a number of files in each folder. Here is a screen shot of what my latest folder looks like for the overnight starting on Nov 9/18.
Looking at the folders and files on your SD card may help narrow down the problem a bit to determine if the machine is actually creating the files.
Well I got my Resmed Airsense 10 autoset, with the supplied SD card. No detailed data on Sleepyhead!! What!! The provider had to search around the office for a blue resmed branded SD card, so it was not the one that came with the machine. There is data under the data folder, unlike with the previous machine. All I am getting is summary data, ie no graphs.
Okay, last night was a much better night than the one I described above. I discovered someone ( not me) had turned off my EPR, so I went in and restored it. Here is my data from last night. It seems I am utilizing some pretty high pressures? Average pressure is much higher than prescribed initially (5). Would appreciate any input.
I have been trying to think how you could get titrated to a fixed pressure of 5 cm, and now you are getting higher AHI including both OA and CA events. Getting CA events if you are sensitive to pressure is not unexpected. However getting more OA events with pressure is unusual. About the only way I can think of to explain your outcome requires the assumption of two causes. One is that during your titration test, the technician quickly observed that you are sensitive to pressure causing CA events, and as a result limited pressure to 5 cm, so your titration outcomes are based on that very low pressure. Now you are using the AutoSet machine with the maximum pressure set at the machine maximum of 20 cm. It is responding to snore which does not seem to be an issue, flow limitations which you have a few of, and of course to obstructive apnea, which seems to compound the problem by creating both central apnea and obstructive apnea. There is a condition which some may describe as mixed or complex apnea where you have a respiratory control system instability. In SleepyHead that can show up as an oscillation of the Minute Ventilation rate. It creates a waxing and waning breathing effort effect. Sometimes at the minimum of the breathing effort this is identified as a central apnea event by your machine. And other times it may result in an obstruction and is flagged as a OA event. However the cause is really the same -- the breathing control system instability. And the control instability can be made worse with higher pressure and pressure support or EPR.
Here is a SleepyHead screen from a couple of nights ago where I observed something like that. What you can see is that up until 6:34 I was sleeping well, with a uniform regular breathing pattern, and very stable Minute Ventilation. Then something happens. The machine did not flag it, but you can see from the Mask Pressure graph it started to test it with the 4 Hz pressure cycle. The band that paints is fairly wide indicating an obstruction, but it does not last long enough to get flagged. However this starts the control instability cycle, like a car on cruise control encountering a hill. The waxing and waning starts and the Minute Ventilation starts to cycle. Part way through the waning part the airway closes and is flagged as a OA event. Wide mask pressure band painted. The next cycle ends in a CA event. Notice that the mask pressure band painted is not as wide. Then this continues with the next two cycles ending in an OA event, one in nothing, and then one more as a CA event. So that is my understanding of what mixed apnea may be. The control system instability creates both obstructive and central events. So that may be what is happening in your case. If you look at the zoomed in view of the areas where you are getting a mix of events you may see a pattern like this.
In any case I hope that helps some. It is about the best explanation I can come up with. I am guessing but I think with the APAP machine you now have the solution may be to really reduce pressure to the point where the respiratory control system is stable, and at the same time, hope that pressure is enough to resolve the obstructive apnea.
