Just discovered this setting on the Autoset ResMed. The Resmed site says the 3 settings refer to comfort levels with level 3 the most comfortable.
Can someone please explain the actual effect on CPAP of the 3 levels? One would think level 3, the most comfortable, would be the obvious setting so what is the implication of levels 1 & 2?
TIA
John (still learning!!)
The meaning of "EPR" comfort levels
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The meaning of "EPR" comfort levels
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Re: The meaning of "EPR" comfort levels
It's a 1 cm reduction in pressure per setting.
So the setting of 3 reduces the pressure upon exhale by 3 cm...setting of 1 is a 1 cm reduction and setting of 2 is a 2 cm reduction.
But it can never drop below 4 cm...so if someone was using 6 cm and set it to EPR of 3 it wouldn't drop 3 but instead would drop down to 4 which is a 2 cm drop.
"Comfort" is all in the eye of the user. Some people might like 3 better and the next person might like 1 better.
So the setting of 3 reduces the pressure upon exhale by 3 cm...setting of 1 is a 1 cm reduction and setting of 2 is a 2 cm reduction.
But it can never drop below 4 cm...so if someone was using 6 cm and set it to EPR of 3 it wouldn't drop 3 but instead would drop down to 4 which is a 2 cm drop.
"Comfort" is all in the eye of the user. Some people might like 3 better and the next person might like 1 better.
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- Tassie Devil
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- Location: Dilston, Tasmania, Australia
Re: The meaning of "EPR" comfort levels
Thanks Pugsy. As usual you are the source of great wisdom and knowledge.
It was already set at 2 so I changed it to 3 to see what will happen. Pressure settings are 9 up to 20.
The Autoset seems to be working fine with AHI readings usually around 1 but occasionally up to 3, although I appreciate that is only part of the story. One of these days soon I'll get serious about using Sleepyhead constructively although there is always a danger of becoming obsessive about the readings as I see some here have done.
One of the big problems I see with CPAP is the difficulty of judging just how much better it makes you feel as this is just so subjective. It is a lucky person who finds immediate relief but it seems to me it can be a gradual process as the brain adjusts to the new sleeping routine. Because of this, initially I felt it was not working and I frequently see that same reaction from others posted here.
One of our earlier Prime Ministers is often quoted when he said "Life is not meant to be easy". Very true, but we can be forgiven for sometimes asking just how hard does it have to be?
John
It was already set at 2 so I changed it to 3 to see what will happen. Pressure settings are 9 up to 20.
The Autoset seems to be working fine with AHI readings usually around 1 but occasionally up to 3, although I appreciate that is only part of the story. One of these days soon I'll get serious about using Sleepyhead constructively although there is always a danger of becoming obsessive about the readings as I see some here have done.
One of the big problems I see with CPAP is the difficulty of judging just how much better it makes you feel as this is just so subjective. It is a lucky person who finds immediate relief but it seems to me it can be a gradual process as the brain adjusts to the new sleeping routine. Because of this, initially I felt it was not working and I frequently see that same reaction from others posted here.
One of our earlier Prime Ministers is often quoted when he said "Life is not meant to be easy". Very true, but we can be forgiven for sometimes asking just how hard does it have to be?
John
_________________
Mask | Humidifier | |||
![]() | ![]() | |||
Additional Comments: I abandoned an ESCAPE S9 (on hire) for the much better used S9 AUTOSET - recommended |
Do not deride the idiots of this world as they make the rest of us look so much better
BUT, avoid being an idiot yourself and PERSIST WITH CPAP.

Re: The meaning of "EPR" comfort levels
One thing to keep in mind, tho' it shouldn't be seen as a negative, is that when EPR is set high it can raise AHI by a small amount... just an oddity, but people are often surprised by it.