We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our Privacy Policy.


Joined Dec 2014
Joined Dec 2014

I'm not sure I entirely understand your post, especially the question at the end. One reason SleepyHead might be saying there is no new info could be that, after the last time you downloaded from your SD card into SleepyHead, you left the SD card locked. If the SD card is locked and you put it back into the CPAP, the PAP will not be able to write new data onto the card.

For those who use PCs, the SD card apparently does not need to be locked before inserting the card into your computer's SD card slot. I use a Mac laptop and MUST lock the card first, or Mac, an otherwise delightful fellow, will try to write a bit of code onto the card and mess things all up. So I have to remember to LOCK card, then insert into computer to upload, then eject card, UNLOCK it, and reinsert into the PAP machine.

Does that help at all?

As for the download: into SleepyHead, you will get all kinds of data, most of which unless you are a respiratory tech or sleep professional -- OR a very-well-educated consumer -- you will not know what to do with. MyApnea is hoping at some point to have some info here about how to look at SleepyHead data; there are other forums on the web where some people have become quite expert at it and will offer help (at your own risk); but basically it will tell you what the MACHINES are flagging (there will be more things happening than the machines will flag...). ResMed does not flag "RERAS" and Respironics does -- in SleepyHead -- but all will show apneas, hypopneas, snoring, mask leaks etc. The most important thing is the breathing waveform -- it looks like a black squiggly line all night -- and that, like the other horizontal band charts, is expandable so you can see down to the seconds exactly how you are breathing. You also see when things happen in relation to each other: mask leaks happening and triggering an apnea, for instance...

This is all a lot of info. But if you learn it, you will be able to tell what behavioral, pharmaceutical, and/or even dietary changes you make that hurt and help your sleep. It has made a huge difference for me, and I am in NO way a well-informed or skilled user.

good luck.

A couple of things:

  1. Using one number to judge sleep IMO is ... let's just say not the best idea. Use your judgment about daily functioning, regardless of the numbers. For me, I can be a zombie with an AHI under 2 -- but if my sleep fragmentation was bad the night before, the next day functioning is definitely impaired: I've been tracking this for over 6 months in specific fashion now.
  2. I am not entirely certain of this but I have been told that once you start on the PAP, you are having some sort of make-up sleep, may have rebound REM (again, not sure of the terminology), and your sleep architecture (what stage you're in, at any given point of time) changes. So as another responder above said, it may be that now you are in deeper sleep at get-up time, and that certainly can make you feel groggy. Brain fog, on the other hand, that lasts all day, is a separate issue.

I would suggest, if you are so inclined, to download SleepyHead software, and read the data on your SD card in SleepyHead. That will give you a much, much better idea of what is actually going on in your sleep than the software your PAP company gives you. In conjunction with my ResMed device, I am also using a separate device called SleepImage, and this week am tracking the data from that with the data in SleepyHead to sort out a few remaining issues.

Good luck with this -- come back and let us know how it's going, and I wouldn't wait too very long for improvement. A few weeks, a month, and you should be seeing SOME sort of betterment, IMO.

Hiya --

I have discovered through trial and error and years of waking up exhausted that -- for me -- it is the number of RERAS, or respiratory-effort-related-arousals that matter, and those are not included in the almighty "AHI" that everyone points to. Unless some do include RERAS, I have been given to understand it is the apnea/hypopneas index -- and that does NOT give you ANY measure of sleep fragmentation, which will make you feel like horsehockey in the morning!

In fact, I have had AHIs of 3 and felt better on awakening than I have with AHIs of 0.3 -- no typo there -- but when I put my SD card (from a Respironics machine, the ResMeds don't flag these in the software -->) into SleepyHead software, the mornings I feel like horsehockey, I have had a BIG batch of RERAS in the couple of hours before get-up; mornings I wake up okay or good, very few.... and the sleep fragmentation is what got me into the horrors of bad cognitive deficits.

My guess is that just about ANYthing can fragment your sleep: a restless bed partner, sore muscles, too much sugar/carb before bed, a dangerous neighborhood with gun shots or break-ins, a dangerous relationship, a sick child or significant other....if it fragments your sleep, and you wake up too many times each night, you are going to be in a world of hurt.

So I suggest if you aren't already doing it, go find JediMark's opensource software program called SleepyHead -- it's on his own site now and supports the newest of the Respi machines, so he's keeping it current. Flip him some bucks if you think the software is helpful. There's a lot to learn, but if nothing else and you have a Respi machine, you'll see the RERAS and can track your own subjective quality of sleep versus the somewhat more objective machine data.

You could also go check out SleepImage.com -- I am doing a trial of that device right now, and it provides some info I'm still learning to discern.

Good luck, and let us know how you're doing?