Problem with New Resmed Airsense 10

Hi everyone,

I just bought a brandnew airsense 10 for her, and when I tried it straight out of the box the cpap was pumping air.. especially on exhale. It was so much that I thought, ok this device is broken. After trying all the settings and using it for 10 minutes, it started becoming more normal.

After maybe an hour, it seemed like it could be used but still not comfortable. Unnatural feeling, not like my previous cpaps. And by this time I don't trust it anymore. So I checked the pressure graph on sleepyhead (attached). The flow and pressure graph has tiny disturbances, it's not smooth like it should be.

It's not the waves I'm worried about in the graph -- that is just normal EPR function -- it's the tiny bumps in the waveform that feel like I'm breathing out against small disturbances/fluctuations in pressure.

Can anyone confirm what I'm seeing isn't right ? I should probably exchange the device for a new one ? Is it possible that I need to 'break in' the device ?

The setting are all correct, hose and mask settings etc.

Thanks anyone for any advice on this!

I wonder if you are feeling the FOT flow that is used by the machine for figuring out open vs closed airway.
You've zoomed in a little to close to see it well. See the little bumps above right before the CA flag?

And no...we don't "break machines in".

FOT is explained in the manual...do you have the clinical/provider manual? If not go request it from the apneaboard
https://www.apneaboard.com/adjust-cpap- ... tup-manual

What it looks like on the flow rate graph is tiny little bumps or zipper like bumps. They are common and may or may not show up ending with a flag. You can have FOT show up without ending with a flagged event.

Most people won't be able to feel this but I have known a few rare people that find this FOT disturbing.

Pugsy wrote: ↑

Sun Oct 28, 2018 7:44 am

FOT.JPG

I wonder if you are feeling the FOT flow that is used by the machine for figuring out open vs closed airway.

I'm pretty sure OP isn't seeing FOT, at least not in what was shown.

My feeling is that it's cardiac artifacts showing up...

But, yeah, nothing wrong with the machine, just someone looking for trouble that's not there.

Thanks Pugsy, good idea! I imagine it's not FOT because it's constant. These tiny changes in pressure never go away.

I've never had graphs like this, and I just tried the device for another hour. Same problem, same squiggly graphs. (attached)

IMO, definitely a device malfunction. A loose ball-bearing, anything, something in the motor that's not allowing it to keep the pressure stable.

Another piece of evidence that the machine is defunct -- the autoset went up to the highest setting despite being awake and normal breathing.

Now, I just wanted to make sure before I send it back for a new one, that resmed's aren't maybe just made this way. I really doubt it, but you never know, maybe someone can share with me if they have similar graphs, or they think this is normal for resmed devices (i've had philips before this).

Only other thing I can think of is make sure that the hose diameter size is correctly selected if you are using a non heated hose.

dcg494 wrote: ↑

Mon Oct 29, 2018 5:39 am

Now, I just wanted to make sure before I send it back for a new one, that resmed's aren't maybe just made this way. I really doubt it, but you never know, maybe someone can share with me if they have similar graphs, or they think this is normal for resmed devices (i've had philips before this).

Capture3.PNG

I have the a ResMed AirSense 10 AutoSet for Her as well.

Here's my Flow Rate and Mask Pressure graphs, but for our slightly different breathing patterns, our graphs are similar.

dcg494 wrote: ↑

Mon Oct 29, 2018 5:39 am

IMO, definitely a device malfunction.

No, it's not.

dcg494 wrote: ↑

Mon Oct 29, 2018 5:39 am

Another piece of evidence that the machine is defunct -- the autoset went up to the highest setting despite being awake and normal breathing.

Also normal, since your breathing isn't perfect while awake.

Here's some pressure traces from a *perfectly functioning machine*:

Note the imperfections and jaggedness at times.

Great, thanks a lot Dog Slobber! Exactly what I was looking for. Your graphs do look different, and the way all my graphs have looked prior to the new device (also while awake).

Yours are much smoother than mine. If you look at my graph, the many small bumps in the graph, I feel that while breathing, the machine changing pressure very slightly and constantly for no reas.

Palerider, that's an interesting graph, thanks for sharing. Would you consider this a normal breathing pattern ? Mine has never been jagged like what I am seeing now and I find it hard to even fall asleep with the unstable, vacillating pressure.

Block the tubing with some type of plug that has around an 1/8" hole in it. Your graph should be fairly smooth then, if not the sensors may be out of calibration.

Hi WRX03, block the tubing ? haha, sorry what do you meant exactly ?

Posting another graph from the middle of an hour nap today. Zoomed in on the mask pressure. At the bottom of exhalation, it overshoots to get the pressure back up, and I feel that "bump" in pressure when I'm awake. And I feel the pressure as very unstable overall.

Turn off your epr it’s currently 2 your used to the resperonics c or Aflex which is very different feeling I don’t think the machine has an issue it just feels different to your old machine which changed inhale/exhale pressure at a different point in time. Or go and purchase a Philips machine

dcg494 wrote: ↑

Mon Oct 29, 2018 2:48 pm

Palerider, that's an interesting graph, thanks for sharing. Would you consider this a normal breathing pattern ? Mine has never been jagged like what I am seeing now and I find it hard to even fall asleep with the unstable, vacillating pressure.

Turn off EPR. Make sure your mask type and tube type are set right.

Those strips I posted were the mask pressure readings, done to show the difference in EPR and PS on a bilevel (there isn't any).

Thanks Jas and Palerider. Tried without EPR yesterday, and posting a graph here as well. Even with EPR off, I still feel the pressure irregularities.

Looking at the graph, the mask pressure just seems too active for a constant CPAP w/o pressure relief ? But maybe not..

Maybe I'm starting to be convinced it's me, and that the resmed machines are simply a looot more sensitive. And by a lot, i mean the phillips machines are big dumb clubs compared to the respironics. Because I've never had the pressure variation like this on phillips. Then again, I've never been able to feel 100% - even 80% -- on a phillips, which is why I'm trying to make the switch.

A block tubing with an 1/8" hole is used during calibration on the CPAP. But you want to see if the pressures and flow remain stable as the unit is running at a steady state. If the calibration is off it can cause the bouncing you are talking about.

dcg494 wrote: ↑

Wed Oct 31, 2018 7:53 am

Maybe I'm starting to be convinced it's me, and that the resmed machines are simply a looot more sensitive. And by a lot, i mean the phillips machines are big dumb clubs compared to the respironics. Because I've never had the pressure variation like this on phillips.

That is more pressure variation that I usually see... but even then, it's not much variance.

As to resmed vs philips.... Philips don't *have* mask pressure data.

Mask pressure is the actual *measured* pressure, so you will see variations as you're breathing. Philips doesn't have that, all it has is the 'pressure' or 'set pressure' trace... ie, what the machine is supposed to be providing, not what it actually IS providing.

The extra data the Resmed provides is just one of the things about it that I believe is superior.

Again, do you have all the relevant settings set up properly? Mask type, tube type, ab filter (I don't remember off hand if your machine has that setting).