Phillips/Respironics Dreamstation BIPAP settings primer

I am new to a BIPAP machine and I am aware this is a basic question - but there are no primers on the subject. The Phillips/Respironics machine set on AutoBIPAP allows adjustment of IPAP↑ EPAP↓ PS↓ and PS ↑
Most of the posts speak to a single value of PS and don't discuss these 2 varieties of PS (up and down).
I would be grateful for a clear discussion of these terms and how to adjust them.
Thanks.

Donag wrote: ↑

Sat Feb 15, 2020 8:13 pm

I am new to a BIPAP machine and I am aware this is a basic question - but there are no primers on the subject. The Phillips/Respironics machine set on AutoBIPAP allows adjustment of IPAP↑ EPAP↓ PS↓ and PS ↑
Most of the posts speak to a single value of PS and don't discuss these 2 varieties of PS (up and down).
I would be grateful for a clear discussion of these terms and how to adjust them.
Thanks.

Most of the answers to your questions are within the pages of this forum.
However, a little forum and Internet searching will reward you with plenty of reading material.

Here are just a few links:

https://duckduckgo.com/?q=Bilevel+thera ... fhp&ia=web

https://duckduckgo.com/?q=Tweaking+Bile ... fhp&ia=web

https://duckduckgo.com/?q=bilevel+press ... fhp&ia=web


https://www.cpap.com/blog/definitions-cpap-terms/


https://www.resmed.com/us/en/healthcare ... aries.html

http://www.ucmc150.uchicago.edu/sleep/terms.html

https://www.sciencedirect.com/topics/me ... y-pressure


viewtopic/t79539/Setting-BiLevel-Pressu ... -Auto.html


search.php?keywords=%22Rise+time%22

search.php?keywords=%22Pressure+Support%22


Den

.

More:

https://www.westcaremedical.com/wp-cont ... Manual.pdf


Den

.

Den,

Thanks for all those links, but only the Westcare Medical reference addresses the question I asked about PS↓ and PS↑ with definitions. The posts on this forum that mention pressure support discuss it as a single adjustable number (perhaps that is how it is programmed on a ResMed BIPAP machine). So, for the Phillips/Respironics machine set at AutoBIPAP PS↓ means the minimum difference between EPAP and IPAP, whereas PS↑ is the maximal difference. So, if one chooses, say, and EPAP of 10 and an IPAP OF 20, what is the best strategy for adjusting PS↓ and PS↑? I am trying to maintain a reasonable AHI and not swallow a lot of air. Believe me, I have searched the available literature and there is no good explanation on how to go about this on an empirical basis.

Donag wrote: ↑

Sun Feb 16, 2020 7:45 pm

Den,

Thanks for all those links, but only the Westcare Medical reference addresses the question I asked about PS↓ and PS↑ with definitions. The posts on this forum that mention pressure support discuss it as a single adjustable number (perhaps that is how it is programmed on a ResMed BIPAP machine). So, for the Phillips/Respironics machine set at AutoBIPAP PS↓ means the minimum difference between EPAP and IPAP, whereas PS↑ is the maximal difference. So, if one chooses, say, and EPAP of 10 and an IPAP OF 20, what is the best strategy for adjusting PS↓ and PS↑? I am trying to maintain a reasonable AHI and not swallow a lot of air. Believe me, I have searched the available literature and there is no good explanation on how to go about this on an empirical basis.

Here's another link narrowing down the term to Pugsy's postings.

search.php?st=0&sk=t&sd=d&sr=posts&keyw ... y&start=15

And, this is from the manual:

PS Min - This screen allows you to modify the Minimum Pressure Support setting. This setting
is the minimum difference that is permitted between IPAP and EPAP while Auto
Bi-level therapy mode is active. You may adjust the setting from 0 cm H2O to the
Maximum Pressure Support setting. This screen only displays if Auto Bi-level mode is
enabled.

PS Max - This screen allows you to modify the Maximum Pressure Support setting. This setting
is the maximum difference that is permitted between IPAP and EPAP while Auto
Bi-level therapy mode is active. You may adjust the setting from 0 cm H2O to the
minimum value of either 8 cm H2O, or the difference between Max IPAP and Min
EPAP. This screen only displays if Auto Bi-level mode is enabled.


From my understanding, it is another way of adding another range to the EPAP and IPAP settings.
For example, if you set them both to 0 (zero), they won't go any further than the fixed EPAP and IPAP settings.


Den

.

I found this discussion which may help explain it further:

viewtopic/t100152/Help--Auto-BIPAP-Settings.html


Den

.