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Ghune:

I have an S9 VPAP Auto (ResMed) and have had a very similar experience several times: the pins & needles/numb feeling in hands and arms.

In my case it has been brought on by lots of sniffing and swallowing due to allergies.

Incidentally my machine tends to score lots of central apneas during these periods.

Good luck with the acclimation process.

JohnB you wrote:

“Another way to work with the unit is to turn it off and then back on. This will reset what the unit expects from you.”

I’ve been wondering about this. Do you know how the machine’s ramp feature handles this? Does it “know” to not begin the ramp process all over again if you turn it off and back on?

Thanks

Kennerly wrote:JohnB you wrote:

“Another way to work with the unit is to turn it off and then back on. This will reset what the unit expects from you.”

I’ve been wondering about this. Do you know how the machine’s ramp feature handles this? Does it “know” to not begin the ramp process all over again if you turn it off and back on?

With your machine the S9 VPAP Auto...it won't know that you don't want to revert back to lower pressures and will start ramp all over again with each time you turn it off and then back on.

ASV machines are a different model bilevel pressure machine than your VPAP Auto happens to be. Reset for those ASV users often mean that the machine goes from 20 plus pressure to maybe 10...

You could set your ramp starting pressure a little higher though if you still want ramp available at the beginning of the night or just turn it off if you can do without it.

Just relax, try not to concentrate on your breathing. Breath naturally and the machine will learn your breathing pattern.

JDS74 wrote: In my case with my settings, ventilator mode means the pressure change between inhale and exhale switches from EPAP 17-IPAP 19 to EPAP 10-IPAP 24 and it can sometimes do that between breaths. So,if you get the EPAP pressure too close to the IPAP pressure, your lungs won't exchange air properly and you will start to increase the blood CO2 level and develope acidosis.

This is interesting info, however I'm a little confused and need you to amplify these concepts, if you'd be so kind:
Could you give some examples of settngs on ASV that are too close together - typically, how close is too close?
How does Pressure Support come into the picture?
Besides the rapidity of the breathing cycle, what would be typical symptoms of onset acidosis?