suggestions for improved settings?

[OpalRose]

Hi guys,

I've messed around with this for a bit and I seem to have gotten things quite improved.  I turned off flex and set it at 8.5-11.  Any ideas why it has these weird spikes in pressure?  Is it related to what appears to be some leaks?  I'm trying to resolve those with a chinstrap but not sure if that is what is going on.

Hi odoyle,
Your numbers look good.  As far as the “weird” spikes in pressure......well they are NOT spikes in pressure at all.  This is part of the Phillips Respironics Algorithm.  

The algorithm with raise pressure approx. 1.5 cm every so often to see if there is a better pressure or a reason to raise pressure.  

This looks like a “saw tooth” pattern on your graph.  If you look closely, you can see that it does it’s test by raising the pressure 1.5 cm.  This is normal and it’s not something you can feel or notice.  

Other reasons besides the “normal” saw tooth pattern for the machine to raise pressure are Snores, Flow Limitations and RERA’s.

[Ron AKA]

Any ideas why it has these weird spikes in pressure? 

In the ResMed S9 I have the theory that the pressure that is displayed is not actually the pressure you are getting. I believe it is the pressure "demand" to the control system of the machine. It can change essentially instantly, but the pressure does not follow instantly. And, the actual pressure is displayed as the Mask pressure. If you drag the Mask pressure graph up beside the Pressure graph, and then click on an Event to expand the graph time scale, you may be able to see if the actual mask pressure is responding as fast as the pressure demand. The other thing that is interesting about the Mask pressure in the expanded time scale is that you can see at what part in the pressure cycle of EPR or Flex that the breathing stops.

[odoyle]

I don't really snore at all..nothing on that graph

[attachment=5193]

I don't see a "mask pressure" graph in the app..?

[Ron AKA]

I don't really snore at all..nothing on that graph
I don't see a "mask pressure" graph in the app..?

Yes, zero for snore. The pressure you have is obviously working to prevent snore. Perhaps DreamStation does not record mask pressure like ResMed does. I thought I had seen it in posts by others.

[odoyle]

I wonder if what you would be interested in is the "leak rate" graph - the inverse of the pressure I think?

[Ron AKA]

I wonder if what you would be interested in is the "leak rate" graph - the inverse of the pressure I think?

I was thinking of mask pressure, but perhaps Dreamstation does not report it like ResMed does.

[Walla Walla]

No there is no mask pressure on DreamStations.