(04-17-2016, 10:57 PM)Hmm888 Wrote: My past CPAP machine never had this ability and my PSG template never had any indication Cheynes Stoke, but so far in the few nights of use, my Respironics Dreamstation shows Cheyne Stokes breathing.
Should I be concerned about the waveform anomaly?
First, both snippets of the periodic breathing your machine flagged are relatively short (less than 5 or 6 minutes), and second, they do not look like classic Chenye Stokes breathing. Classic Chenye Stokes breathing is shown in this snippet of a PSG recording. The third graph from the bottom is the wave form data that is equivalent to what your DreamStation records.
As you can see, in real Cheyne Stokes breathing, the periodicity is pronounced as is the waxing and waning of the inhalations. There are a lot of things that the PR machines can flag as Periodic Breathing
that are not Cheyne Stokes respiration.
In your case, it looks as though the flagged sections barely meet the criteria that PR uses to flag periodic breathing. I say that because there is not a particularly well defined waxing/waning pattern in the breathing. There are some hints of a pattern, but it's not well established.
It's not uncommon for the PR machines to flag some Periodic Breathing now and then. Since your machine is recording some most nights it's worth mentioning to your doc. But my guess is that s/he will tell you that as long as it's minor and looks like this, that you don't need to be worried about it.
Quote:The interesting thing, software wise, Sleepyhead does not detect the Cheyne Stoke, however, I do know that the Resmed Airsense 10 numbers do show up in Sleepyhead. Perhaps it only shows up in "backend" of the app?
SleepyHead reports the data that is recorded by the machine.
When viewing data from PR machines in SleepyHead, anything that the machine flags as Periodic Breathing shows up with a green background in the wave flow. And SH reports the % time in Periodic Breathing in the summary data. (If you need a screen shot, I'll supply one in a couple of days.)
The Resmed machines do not flag Periodic Breathing with a special code of any sort. They do record wave flow data, however. And if someone knows what they're looking for, they can scroll through the zoomed in Resmed wave flow data and identifiy likely periods of periodic breathing based on the shape of the wave flow. But because the Resmed machine's data does not contain a "flag" for Periodic Breathing, when Resmed wave flow is displayed in SH, there won't be a green background even on the most striking examples of clear Chenye Stokes breathing.