New AirCurve 10 S

[Pugsy]

No. I don't think you will have the same problem with the DreamStation.
And I actually don't think you would have the same problem if you were maybe using a different mask with the AirCurve machine.
I could be wrong but I think that what you have happening is just a fluke caused by a combination of mask pressures, vent rates and the ResMed machine not being able to figure out excess leak calculations correctly because of the mask you prefer to use.

I doubt that the mask is leaking like the ResMed machine thinks it is leaking but I can't prove it except to go by the leak rate shown from the System One machine.

And I don't blame you for wanting to stay with a machine brand that lets you use the mask you prefer to use. I would feel the same way.

I think that your mask simply isn't compatible with the ResMed machine at your pressures.
Since you don't have facial hair then that variable is removed from the equation but I have seen this happen before and the person didn't have facial hair.

[Bill44133]

Thank You for the input. I should have asked before i went to this machine.

[Pugsy]

There's no way to know or anticipate that there would have maybe been a problem with your mask and this machine.
When I have seen this incompatibility issue happen it is so random and rare that we wouldn't consider it as being a potential problem.
I can count on one hand the number of times I have seen this happen over the years.

Like I said...I think the issue is probably a complex combination of things brought on by the pressures and the venting at your pressures and your preferred mask.
It's very possible that if your pressure needs were half what they are that things would be different.
It's also very possible that if you were using a different mask that you wouldn't have these issues.
People use this machine at pressures higher than yours and don't have these issues.

You just got unlucky and drew the short straw and a random fluke thing happened that no one could reasonably anticipate that it would happen. You could have asked ahead of time and we would all say that "all masks will work with all machines at all pressures" because when they don't it is so rare that we just don't consider it until it happens.

If you have a different mask to try just to validate or prove my theory...you could try it and see what happens just to see if I am right or not while you still have this machine.

I think you will be fine with the DreamStation BiPap....the only time I have ever seen this incompatibility leak thing has been with a ResMed machine and with a more non standard type of mask or "off brand" if you want to call it that. The most recent one that comes to my mind was someone with the Innomed Hybrid mask.
And it doesn't happen to everyone either...so there is also something peculiar to the person that is impacting things.
There's a lot of people using non ResMed masks with ResMed machines and not having these issues.
I could maybe use your mask and not have the same issues as you are having with my ResMed machine.

[raisedfist]

Do the same bi-level pressures feel more or less the same while awake between the two different machines?

Did you create a new profile on Sleepy Head? The way leak is reported is different between the manufacturers. I wonder if Sleepy Head is smart enough to change the leak threshold per profile if using different machines?

Respironics and ResMed have different comfort/synchrony settings, so it may take some tinkering to get the same feeling. For whatever reason, for example, with rise time a setting of Zero on the Respironics makes the rise time 150ms, a setting of 1 is 200ms, a setting of 2 is 300ms, and so on.

[Pugsy]

I wonder if Sleepy Head is smart enough to change the leak threshold per profile if using different machines?

The only leak function statistic that SleepyHead does is the red line threshold thing where ResMed machines use the 24 L/min line and Respironics never tells us where it's red line is but somewhere up around 90 L/min when using higher pressures.

The big blocks of gray large leak area shown on the graphs on the right side are all from the machine itself reporting large leak.
They would show up exactly the same if using ResScan.

It's the machine thinking it is leaking and not SleepyHead deciding all by itself that the leaks are large when we see those big gray blocks of large leaks.

[Bill44133]

Do the same bi-level pressures feel more or less the same while awake between the two different machines?

Did you create a new profile on Sleepy Head? The way leak is reported is different between the manufacturers. I wonder if Sleepy Head is smart enough to change the leak threshold per profile if using different machines?

Respironics and ResMed have different comfort/synchrony settings, so it may take some tinkering to get the same feeling. For whatever reason, for example, with rise time a setting of Zero on the Respironics makes the rise time 150ms, a setting of 1 is 200ms, a setting of 2 is 300ms, and so on.

The pressure felt less.. It seemed like the machine slowly went up to 23.. The 760 machine immediately blasts me with the air.

Yes I did create a new profile in SleepyHead for the new machine. I wanted to keep it separate. I also have a 750 machine that I use 2 months out of the year that is also a separate profile.

I happen to have a AirFit F10 mask that I used once and rejected that I didn't like the headgear on it. I will try it tonight and see how it goes. I am not sure when the DME is going to come get the machine so I should get one more night.

If stupid can happen it always happens to me.

[raisedfist]

I wonder if Sleepy Head is smart enough to change the leak threshold per profile if using different machines?

The only leak function statistic that SleepyHead does is the red line threshold thing where ResMed machines use the 24 L/min line and Respironics never tells us where it's red line is but somewhere up around 90 L/min when using higher pressures.

The big blocks of gray large leak area shown on the graphs on the right side are all from the machine itself reporting large leak.
They would show up exactly the same if using ResScan.

It's the machine thinking it is leaking and not SleepyHead deciding all by itself that the leaks are large when we see those big gray blocks of large leaks.

Ah that is interesting. When I was using the Respironics Trilogy Ventilator, I was told that the machine could compensate for easily up to around 60 l/m of leak (since Respironics reports total leak). While awake and using a full face mask at IPAP Pressures in a range of 20 - 25cmh2o, the leak value was around 40-45, and would go up to about 60 at times while I slept. But then again, my EPAP value was only a static 5cmh2o so I guess that is way different than an EPAP of 19cmh2o in terms of venting.

[palerider]

yes I slept though the events.. I never heard the leak alarm.

Last night was about the same, but this time I kept hearing the alarm. I ended up hooking the mask to the 760 machine, and went to sleep.
I called the company and told them to come get the machine out of here.

That's still a lot of leaking, if you look at the guesstimated excess leak line, it's often over the 24lpm resmed max... it's just not enough for the respironics to complain.... 85lpm total leak.

[palerider]

The pressure felt less.. It seemed like the machine slowly went up to 23.. The 760 machine immediately blasts me with the air.

Resmeds have a 'gentle start' where they do a short ramp up over a few seconds to get to pressure, vs the respironics immediate full on.

[chunkyfrog]

Agreed.
Even with the ramp completely off, it takes my Autoset a few seconds to get up to my minimum.

[Pugsy]

It will be interesting to see if a different mask changes the leak results.
If it doesn't..the one thing I didn't mention was that the machine itself might be a lemon in terms of a sensor issue.
For someone to be experiencing THAT much large leak it should be easily felt and readily apparent if it is real.
It wouldn't be totally out of the realm of possibilities for the machine to be a lemon and not be working properly. It's not common but not totally never heard of.

[Bill44133]

Well I worked with this machine and the Resmed Mask for about half hour and could not get the green smiley NO matter how i adjusted.
I had bad sleep the 2 nights prior. I gave up and slept with the 760.

Well I started messing with it again this afternoon and I now have it figured out. The problem is the rem zzz's liner that I was using.
Once I removed the liner from the mask it was fine. I got the green smiley.. I put on my zzz-mask and that got the green smiley!

So for whatever reason the machine did NOT like the mask liner.

I am thinking that this is the deal breaker. i have to check and see if there is a way to tell the machine i am using a liner.

Thanks every one for the help!

[Pugsy]

There is no way to get the ResMed machine to factor in the mask liner so that it won't large leak flag or alarm.
No such setting available to get the machine to ignore what it thinks is large leaks.
At least you know what the problem is now.

[Bill44133]

i am going to try sleeping with it tonight just to be sure that is 100% the problem. The DME did not call yet with the replacement machine.

[palerider]

So for whatever reason the machine did NOT like the mask liner.

Well, the mask liner is creating a large leak.

Try a different liner.