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Effort to improve treatment of OSA and IH
RE: Effort to improve treatment of OSA and IH
(12-02-2020, 02:17 PM)jaswilliams Wrote: The resmed machine shows leaks as zero when there is no mask leaks. The intentional vent leak which prevents Re breathing  is taken into account.

So you're saying that Oscar offsets the leak value with a mask constant - if I'm understanding correctly:

Leak value in Oscar = max(0, Real Leak Value - Mask Vent Offset Constant)

Does that seem right? In the Resmed settings I specified the nasal pillow mask as opposed to the other options (nasal and full face mask if I recall), but I assume there's no way the machine/Oscar can tell between say the Airfit P10 and Swift FX, right?
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RE: Effort to improve treatment of OSA and IH
No, you are not understanding jaswilliams. To maintain its credibility, OSCAR ONLY reports data that the CPAP device is providing. Resmed determines the intentional leak and then reports any deviation above this value. Philips CPAP's report both the total leak rate and then the deviation minus the intentional leak.
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RE: Effort to improve treatment of OSA and IH
(12-02-2020, 08:53 PM)Crimson Nape Wrote: No, you are not understanding jaswilliams.   To maintain its credibility, OSCAR ONLY reports data that the CPAP device is providing.   Resmed determines the intentional leak and then reports any deviation above this value.  Philips CPAP's report both the total leak rate and then the deviation minus the intentional leak.

Ok, I see, I wasn't focused on the distinction between Oscar vs Resmed, and I understand why Oscar would want to report data straight without any modification.

My question remains regarding how Resmed figures out the intentional leak rate - is it just a constant based on the mask type e.g. nasal pilllow?

In practical terms, I've recently switched over to the Swift FX. The nasal pillows and straps aren't as nice as the Airfit P10, but I feel more comfortable with the venting. I've noticed that my heart is sometimes racing when I use the P10, and it doesn't seem to happen with the Swift FX.
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RE: Effort to improve treatment of OSA and IH
I'm not aware if it is for all masks, but I use full face mostly and recall that I must mark a redline in OSCAR to see if/when my leak rate hits or passes that threshold number of 24 L/min redline. It's been a while since I've worried over that, especially in the light of my ASV therapy been pushed, dragged, and thrown down the deep chasm of not giving good therapy for more than 3 hours max for any time I attempt it for the past 1.5 years. Besides that rabbit hole, I reiterate I only watched for 24 L/min for my leak rate on the ResMed 10s I've got, and acted as was dictated.
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RE: Effort to improve treatment of OSA and IH
The Resmed has an internal calculation to work out what is a leak and what isn’t no idea how it works just that the net result is that only mask leaks are shown on the graph, and if that level of leaking is higher than 24 then large leak is flagged. That is a simple to understand scenario
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RE: Effort to improve treatment of OSA and IH
I've managed to switch myself over to the Swift FX pretty reliably now, and I feel a little safer on it given that the venting doesn't seem to be as suspect to clogging.

I've been on the Resmed Autoset 10 for about 4 months now. I typically feel good for about 2 hours when waking up, but get really exhausted before too long. I usually need a nap throughout the day, and the tiredness sometimes interferes with basic necessities throughout the day. I've included some recent charts, and some zoomed in looks at problem areas.

I'd like to ask again about the logistics and cost/benefit of switching to the Vauto. Like I mentioned before, I already have the VAuto, and it's new/ unopened (and I'd like to get a good understanding of whether it would work for me before I opened it). I'd like to get a few more opinions about whether it might make an improvement. Are the flow limits still under control? In previous discussions of my old Dreamstation machine, there were concerns that it wasn't handling periodic breathing and wasn't a good fit. Can we tell if the Autoset 10 is a good fit for me at this point, or if there is improvement to be had switching to the VAuto?

   
   
   
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