Airsense S10 CPAP strange issue. Wonder if anyone else had this happen

I only notice it after a few hours of use/not while trying to fall asleep. My mask gets sucked onto my and, then released, repeatedly. Almost as if a vacuum is created for a second or fraction thereof. Its actually woken me. If anyone has shut the machine off and left the mask on (as opposed to taking the mask off and letting the auto off do its thing, its the same feeling (unless of course your machine doesnt do that either)

I've had the machine replaced because i thought it was a issue and the company i bought it from just swapped it under warranty.

I use "myair" for the software and it doesnt show any issue with leaking, or anything. I know people use sleepyhead / oscar but i dont think it gives any reading myair doesnt. Ive also had the therapists read the data and they dont see any issues. I'm hesitant to install oscar because my computer gives me a warning when i try to install

I'm not really sure what you are saying about the vacuum being created. All masks that I am aware of have a pretty significant sized vent near the nose or mouth. If the machine shuts off you can still get air into the mask through this vent, so it seems unlikely you could get a vacuum.

MyAir just reports very basic summary data. If everything is OK with your machine and your apnea results it is probably fine. The overall score is quite meaningless because of the way it is weighted. And it can very optimistic in the leakage rates. Unless you take your SD card into a clinic and have someone knowledgeable to review the data in the same detail as SleepyHead, there is little value in them looking at the MyAir limited data.

Last night my hose came disconnected. Here is what it looks like in SleepyHead. Looks like the hose came unconnected at about 6:23 AM and I figured it out and reconnected it about 6:30. It went back into the AutoRamp and I went back to sleep to get a few more zzz's about 8 minutes later.

I have had no virus issues or warnings with the SleepyHead version which I downloaded here. Have not tried OSCAR.

its happened on my side, but happens mostly on my back im starting to notice. Its not a question of not being able breath. if you put your finger tips around your nose, then pressed them into your face repeatedly , that would an idea of what i feel. For the mask to be able push against my face, a sort of vacuum has to be created. You can try what i suggested. leave your nasal mask on and press the on off button to get it to shut off. when the machine is off It produce a simular sensation

Hi sreiter

It took me a while to make the connections because it is something that I simply prevent then ignore but yes I think I know what you are referring to.

I know it's not caused by my machine because it is limited to a fixed pressure and no ramp and the flow does not alter.

In my view what you have described is essentially a CPAP extension of snoring.

When you are breathing shallowly the incoming pressure creates a harmony with the outgoing pressure and amplifies the movement of soft tissue in the airways that creates a loose valve effect. (like water hammer) Each time the valve is slammed shut the pressure wave rebounds into the mask and you get that suck - release effect in my case 2 or 3 times a second.

Fortunately for me it doesn't happen too often of it's own accord, but initially I found it amusing and now that I understand it better I can cause it quite easily.

And yes it really sucks! :P

To prevent it you would need to change position or change the way the mask is aligned or tighten the muscles in your throat and nose or force yourself to breath more strongly for a while.

It amuses me because, via this mechanism, my mask can snore for me and if I breath just right the machine will snore as well so it seems like we have used CPAP to move the goal posts a bit further out but nothing has really changed.