Need more pressure on Resmed Autoset II in Auto Mode !

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
danyg
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Need more pressure on Resmed Autoset II in Auto Mode !

Post by danyg » Thu Feb 17, 2011 6:15 am

Hi,

I finally got used to sleep using my Resmed S8 AutoSet II.
It's set to Auto Mode, min pressure=5, max pressure=20, accent=45min.

But what happens is that I get normally the following results
P = 9.4
HAI = 13.2
AI = 2.7
HI = 10.5
usage time = 8:29h

I need more pressure to eliminate the apneas.
How can the machine deliver more pressure?

ps: I can't sleep using cpap mode, as the pressure starts veeery strong...
What I needed is that during the night pressure reached 12 or something...

How ?

Thanks/Dany

dtsm
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by dtsm » Thu Feb 17, 2011 7:19 am

Welcome. The S8 autoset is a great unit. A few thoughts:

1. Apap delivers what is the optimal pressure -- if you've got the faucet set 4-20, it's already 'wide open'.
2. You did not show any leak data; that is critical to determine what is your 'correct' pressure. If your leaks are not under control, the pressure readings are not accurate [better way to say this: machine delivers more pressure to compensate for the leaks].
3. "Assuming" your leaks are under control, one reason for the poor results is your range 4-20 is too wide and the machine can't adjust quickly enough. You might want to adjust to 8-13 as a starter - that is assuming your 'reported P # 9.4' is fairly accurate, monitor for a few days to one week.

Not to complicate matters, but do you have EPR set for on or off, and if on, settings at #1, #2, or #3.

It would also help if you can post some images of the data - hopefully you have both the software and card reader to access this.

Guest

Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by Guest » Thu Feb 17, 2011 7:26 am

Hi,
Thanks for your help!

Leak =zero always.
Epr is on, set to 3.

I really could Narrow from 4-20 to 8-13,
But the point is that i think i can not bear a pressure of 8 right from the start.

Any suggestion?

Thanks again.

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robysue
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by robysue » Thu Feb 17, 2011 7:34 am

Guest wrote: I really could Narrow from 4-20 to 8-13,
But the point is that i think i can not bear a pressure of 8 right from the start.

Any suggestion?
Use the ramp at the start of the night. Let the machine ramp up from 4cm, or whatever you can stand to start with, up to that 8cm minimum APAP setting. If you know how long it usually takes you to fall asleep, set the ramp time for a bit longer than that. That way you should be asleep by the time the 8cm setting is reached.

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BlackSpinner
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by BlackSpinner » Thu Feb 17, 2011 7:58 am

Another option is to increase the lower level a little bit every day. Most people find 4 hard to breathe with as it seems so restrictive.

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sister
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by sister » Thu Feb 17, 2011 9:54 am

dtsm wrote:Welcome. The S8 autoset is a great unit. A few thoughts:

1. Apap delivers what is the optimal pressure -- if you've got the faucet set 4-20, it's already 'wide open'.
2. You did not show any leak data; that is critical to determine what is your 'correct' pressure. If your leaks are not under control, the pressure readings are not accurate [better way to say this: machine delivers more pressure to compensate for the leaks].
3. "Assuming" your leaks are under control, one reason for the poor results is your range 4-20 is too wide and the machine can't adjust quickly enough. You might want to adjust to 8-13 as a starter - that is assuming your 'reported P # 9.4' is fairly accurate, monitor for a few days to one week.

Not to complicate matters, but do you have EPR set for on or off, and if on, settings at #1, #2, or #3.

It would also help if you can post some images of the data - hopefully you have both the software and card reader to access this.


Hi,
My leaks are not and have never been under control.I have good numbers most of the time but I have tried everything to get the leaks down to no avail.
I have mentioned this to my dr. and he says,'you are going to have some leaks, don't worry about those.
I usually have an AHI of 0.0, 0.1,or 0.2 but leaks of .60L/S to .80Ls
So I really don't feel that my readings are accurate but don't know what to do.
The machine always reads excellent on the mask fittings and I don't feel any leaks.
I have a loaner machine at the present time so I don't have a card reader or software.
Any suggestions?
Thanks!

dtsm
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by dtsm » Thu Feb 17, 2011 10:11 am

Guest wrote: Leak =zero always.
Epr is on, set to 3.
I really could Narrow from 4-20 to 8-13,
But the point is that i think i can not bear a pressure of 8 right from the start.
Are you [guest] and danyg the same person?


If your EPR is set at 3, that implies your effective optimal pressure is increased by 3. In plain english that means if normal optimal pressure for you is 6, due to EPR at 3, your machine compensates and optimal pressure increases to 9 [6+3].

Not sure why you have set EPR 3, everyone is different and you might not need such a high EPR. In my case, my DME set to 3, after first week, I reduced to 1 and was fine.

Back to your original post - if you have difficulty with initial 8 setting, a couple of options:

1. set up ramp time so that it starts at slightly lower setting and then slowly ramps up. You'll adjust slowly over time. Most folks find an initial lower 4 is too low, hard to breathe.
2. set ramp time, start range 6-13, use for one week to adjust and also see the results.

If your leaks remain zero, you should be able to zero in on the correct optimal pressure. And keep in mind, it might take time for therapy to work on you. It took me many weeks of tweaking before I got lower numbers. In the beginning, I had >10-15 AHI. Over time, with tweaking of leaks, pressure, changing from cpap to apap to cpap, then back to apap, I've now settled into a routine and my numbers fairly stable.

Be patient, it will come. You're asking the right questions and have a good machine.
Last edited by dtsm on Thu Feb 17, 2011 10:40 am, edited 2 times in total.

dtsm
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by dtsm » Thu Feb 17, 2011 10:18 am

sister wrote:My leaks are not and have never been under control.I have good numbers most of the time but I have tried everything to get the leaks down to no avail.
I have mentioned this to my dr. and he says,'you are going to have some leaks, don't worry about those.
I usually have an AHI of 0.0, 0.1,or 0.2 but leaks of .60L/S to .80Ls
So I really don't feel that my readings are accurate but don't know what to do.
I'm no expert. After 12 months, I've routinely get solid numbers and use blue painter's tape. What has been frustrating and makes no sense to me is similar to your situation. On those few nights that I have a perfect flat leak line or close to it, my AHI [and Ai in particular] are higher than when I have some leaks. When I do have leaks, which is fairly regular - they are within the limits, usually around .20 - .30 range, and my AHI [and Ai] are quite low.

Last few nights was perfect example:

Monday night: leak .35, AHI 5.1, Ai .5, Hi 4.6
Last night: leak .05, AHI 6.5, Ai 1.9, Hi 4.6

But i sleep fine, feel fine during the entire day so basically keep on trucking....

danyg
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Location: Rio de Janeiro, Brazil.

Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by danyg » Thu Feb 17, 2011 12:24 pm

Hi,

The problem is the the S8 Autoset II does not allow setting the initial ramp.

Instead, I believe, the S9 allows to, let's say : define ramp time (45min) + initial ramp pressure (4) and theeeen the final range for apap (8-13).

The point is that the S8 starts the ramp automatically on the lower number of the range (8 for example).
And this is verrry strong for me.

Any help?

Thanks/Dany

davecpap
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by davecpap » Thu Feb 17, 2011 1:10 pm

danyg wrote:The point is that the S8 starts the ramp automatically on the lower number of the range (8 for example).
And this is verrry strong for me.
Lower the range - lets say to 5 or 6, since there is no ramp... Then over time bring the number up to 8. Eventually your body will get used to it and not think starting at 8 is very strong.

So for a week start at 5, then start at 6, then start at 7, etc... or go two weeks between increments.

dtsm
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by dtsm » Thu Feb 17, 2011 1:26 pm

danyg wrote:Hi,The problem is the the S8 Autoset II does not allow setting the initial ramp.
I will check when i get home but believe it should let you adjust both ramp time and initial setting. Starting at 4 is definitely too low, try a slightly higher number, say 6. I will come back with more information tonight [before you turn on the blower ]
davecpap wrote:Lower the range - lets say to 5 or 6, since there is no ramp... Then over time bring the number up to 8. Eventually your body will get used to it and not think starting at 8 is very strong.
So for a week start at 5, then start at 6, then start at 7, etc... or go two weeks between increments.
That would also work....
Last edited by dtsm on Thu Feb 17, 2011 6:59 pm, edited 2 times in total.

danyg
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by danyg » Thu Feb 17, 2011 1:47 pm

GREEEAT help from all of you.
Thank you very much!

dtsm
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by dtsm » Thu Feb 17, 2011 6:59 pm

dtsm wrote: I will check when i get home but believe it should let you adjust both ramp time and initial setting. Starting at 4 is definitely too low, try a slightly higher number, say 6. I will come back with more information tonight [before you turn on the blower ]
PS - Looks like you can't set lower initial pressure at start of ramp....therefore suggest you go to Plan B, set at 6-13, then work your way up to 7-13, etc. By the time you finish these two ranges, you should have a fairly accurate reading on your 95th and then you should set 'final' apap range accordingly.

Pipelance

Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by Pipelance » Thu Oct 19, 2017 1:26 am

Why when I set it above 15.2 do I get Check Tube. The tube is fine as is the mask etc. I AM frustrated!!!.

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grayghost4
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Re: Need more pressure on Resmed Autoset II in Auto Mode !

Post by grayghost4 » Thu Oct 19, 2017 6:20 am

You should start a new thread, with a title that is more appropriate for the question.
Include the machine you are using.

Adding to a 6 year old thread will not get the results that you want.
If you're not part of the solution you're just scumming up the bottom of the beaker!

Get the Clinicians manual here : http://apneaboard.com/adjust-cpap-press ... tup-manual