squid13 wrote:What determines what pressure support number you use. I know it's IPAP minus EPAP. Say that is 4 but could you use a 3 or a 2 and if that is true what effect would it have.
4.3.1.6 The recommended minimum IPAP-EPAP differential is 4 cm H2O and the recommended maximum IPAP-EPAP differential is 10 cm H2O (Consensus).
This recommendation is based on consensus agreement by the PAP Titration Task Force and Guideline-Level evidence . . . for the minimum IPAP-EPAP differential in adult patients.
RandyJ wrote:I found this post by restedgal helpful when I was setting my machine. She advocates using the highest PS setting:
I think the anwser to that is "It depends."Pugsy wrote:Respironics BiPap machines allows for a roaming pressure support...so it can vary up to the 8 cm pressure support. This is totally different way of working than the ResMed bilevel machines. So she was really leaving the PS wide open to range from 2 cm to 8 cm as the machine deemed necessary.
ResMed machines have a fixed pressure support and there is no varying or roaming about. EPAP and IPAP are tied to each other by the pressure support which won't/can't vary.
This roaming vs fixed pressure support raises another question which I never found an answer to..
When is one method preferable over another?
robysue wrote:It may help to consider a few examples: Let's say that we have Min EPE = 8 and MAX IPAP = 16. Now lets consider what happens with different PS levels:
With PS = 2, we have the following ranges 8 <= EPAP <= 14 and 10 <= IPAP <= 16
With PS = 3, we have the following ranges 8 <= EPAP <= 13 and 11 <= IPAP <= 16
With PS = 4, we have the following ranges 8 <= EPAP <= 12 and 12 <= IPAP <= 16
With PS = 5, we have the following ranges 8 <= EPAP <= 11 and 13 <= IPAP <= 16
With PS = 6, we have the following ranges 8 <= EPAP <= 10 and 14 <= IPAP <= 16
squid13 wrote:robysue wrote:It may help to consider a few examples: Let's say that we have Min EPE = 8 and MAX IPAP = 16. Now lets consider what happens with different PS levels:
With PS = 2, we have the following ranges 8 <= EPAP <= 14 and 10 <= IPAP <= 16
With PS = 3, we have the following ranges 8 <= EPAP <= 13 and 11 <= IPAP <= 16
With PS = 4, we have the following ranges 8 <= EPAP <= 12 and 12 <= IPAP <= 16
With PS = 5, we have the following ranges 8 <= EPAP <= 11 and 13 <= IPAP <= 16
With PS = 6, we have the following ranges 8 <= EPAP <= 10 and 14 <= IPAP <= 16
robysue I must be having a senor moment cause this chart confuses me. Is that 8 below equals EPAP,below equals 14 and 10, below equals IPAP below equals 16
and8 <= EPAP <= 14
10 <= IPAP <= 16
Pugsy wrote:I believe she was using a Respironics BiPap at the time she wrote that.
Respironics BiPap machines allows for a roaming pressure support...so it can vary up to the 8 cm pressure support. This is totally different way of working than the ResMed bilevel machines. So she was really leaving the PS wide open to range from 2 cm to 8 cm as the machine deemed necessary.
ResMed machines have a fixed pressure support and there is no varying or roaming about. EPAP and IPAP are tied to each other by the pressure support which won't/can't vary.
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