My Story and Advice Needed

[palerider]

The average of 90 - 93 is a little low so this is something that needs to be addressed.

No it doesn't. That's well within 'ok' for someone who's asleep.

[seeker_here_in]

I tried the suggested settings (Mode : S, IPAP : 18, EPAP 12) and the AHI has actually increased to 9.5.

Attaching the graph

6March.png (182.91 KiB) Viewed 476 times

Happy to learn from your advice and work at this to get this down.

[Pugsy]

I think I said 14 EPAP....not 12

[seeker_here_in]

I think I said 14 EPAP....not 12

My mistake! Let me try that and get back with tomorrow's results.

[Pugsy]

I am hoping that reducing that 6 cm difference down to 4 cm will also reduce those centrals....crossing my fingers here.

[raisedfist]

I don't think he turned off AVAPS either while on S mode. When you look at his pressure line for the IPAP it is not static as it should be in S or S/T mode with AVAPS disabled. If it is off, you may need to lower the rise time setting by one notch because it's not able to generate the full prescribed pressure at the given flow rate of air. Respironics is dumb like that.

[seeker_here_in]

I don't think he turned off AVAPS either while on S mode. When you look at his pressure line for the IPAP it is not static as it should be in S or S/T mode with AVAPS disabled.

No, AVAPS is switched off

[raisedfist]

I don't think he turned off AVAPS either while on S mode. When you look at his pressure line for the IPAP it is not static as it should be in S or S/T mode with AVAPS disabled.

No, AVAPS is switched off

Gotcha. Try lowering the rise time setting by 1 notch and see if that evens out your pressures. It shouldn't be off by 1.5cm at times, so it's probably a flow rate of air issue.

[seeker_here_in]

I don't think he turned off AVAPS either while on S mode. When you look at his pressure line for the IPAP it is not static as it should be in S or S/T mode with AVAPS disabled.

No, AVAPS is switched off

Gotcha. Try lowering the rise time setting by 1 notch and see if that evens out your pressures. It shouldn't be off by 1.5cm at times, so it's probably a flow rate of air issue.

Rise Time Lock is off, and Rise Time is 3. Do you suggest changing rise time to 2?

[Pugsy]

Is Flex on by chance? If it is that would explain the little dips in pressure I think.

[seeker_here_in]

Is Flex on by chance? If it is that would explain the little dips in pressure I think.

Nope. Both Flex Lock and Bi-flex are off.

[raisedfist]

I don't think he turned off AVAPS either while on S mode. When you look at his pressure line for the IPAP it is not static as it should be in S or S/T mode with AVAPS disabled.

No, AVAPS is switched off

Gotcha. Try lowering the rise time setting by 1 notch and see if that evens out your pressures. It shouldn't be off by 1.5cm at times, so it's probably a flow rate of air issue.

Rise Time Lock is off, and Rise Time is 3. Do you suggest changing rise time to 2?

You could try it, as long as it's comfortable. That worked for me I have the same machine. I'd increase the EPAP to reduce your pressure support like was suggested though.

I'm a bit confused because all the settings they set up point to them believing you have some type of lung or neuromuscular issue, but you say you don't. They went to the trouble of enabling AVAPS and prescribing an IPAP min and max. Very odd. I have to wonder how you'd do on an APAP.

[Pugsy]

Hmmmm....
When I used the S/T I had in S mode my pressure lines were fixed...not bumpy...but then it was a ResMed S/T and not the Respironics.
I am scratching my head over the bumpiness.

PS....pressure support is the difference between inhale and exhale.
Let's see what happens tonight with EPAP 14 and IPAP 18 and that makes PS 4.

[raisedfist]

Hmmmm....
When I used the S/T I had in S mode my pressure lines were fixed...not bumpy...but then it was a ResMed S/T and not the Respironics.
I am scratching my head over the bumpiness.

PS....pressure support is the difference between inhale and exhale.
Let's see what happens tonight with EPAP 14 and IPAP 18 and that makes PS 4.

It's a PR thing with the bumpy pressure line. It's only solved by decreasing the rise time, which increases the peak flow rate of air, or you can go really crazy and enable pressure control (pc) mode and set a fixed inspiratory time which forces you to inhale a certain amount of time each breath so usually it extends the inhale. I've had 2 PR machines do it and zero ResMed's.

[HoseCrusher]

The average of 90 - 93 is a little low so this is something that needs to be addressed.

No it doesn't. That's well within 'ok' for someone who's asleep.

You are absolutely correct...

For someone at an elevation of 5000 feet an average oxygen level of 90% during sleep is perfectly normal...







At sea level 94% seems to be more therapeutic.