can machine monitor and not correct ?

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
lzrgroup
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Joined: Wed Sep 20, 2006 1:04 pm

can machine monitor and not correct ?

Post by lzrgroup » Fri Oct 06, 2006 8:49 am

we have a resp bipap auto machine, can i set it to record breathing etc without making any corrections so I can show hubby what his numbers look like without the machine helping him


Guest

Post by Guest » Fri Oct 06, 2006 9:31 am

The closest you can get is to set the machine for 4 cm pressure and record the data at that pressure.

Just to warn you, lots of folks seem to have problems breathing through a mask at that low pressure though, so don't be surprised if hubby yanks the mask off. Of course, it might not bother him a bit. It didn't bother me to breath at 4 cm pressure.

Regards,
Bill

SelfSeeker
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Post by SelfSeeker » Sun Oct 08, 2006 7:05 am

lzrgroup,

I finally got my EncorePro working yesterday, so I was able to see the data.

You can still set the machine a bit higher, 7 or something.

Even if the apneas/hypopneas are corrected they are still recorded.

What you may not see if it takes a very low pressure to keep the airway open, would be these apneas/hypopneas that not occur because the airways are already open at the low pressure you set the machine at.

Make sure the machine is set at a low pressure your husband can still breath at.

Tell us how it went.

I think we all have ideas about testing our loved ones.
I can do this, I will do this.

My disclaimer: I'm not a doctor, nor have I ever worked in the health care field Just my personal opinions.

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rested gal
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Post by rested gal » Sun Oct 08, 2006 12:31 pm

Selfseeker's right -- apneas and hypopneas that are prevented won't be recorded. Even 4 cm can prevent events in some people, but it generally does take more pressure than 4 to ward off events.

As the Guest (Bill) said, setting EPAP and IPAP both on "4" cm will be as close as you can get to "no treatment" while still using the machine for recording purposes. Use the operating mode BPAP.

If your husband absolutely can't stand 4/4 try 5/5.
ResMed S9 VPAP Auto (ASV)
Humidifier: Integrated + Climate Control hose
Mask: Aeiomed Headrest (deconstructed, with homemade straps
3M painters tape over mouth
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dsm
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Post by dsm » Sun Oct 08, 2006 3:16 pm

It seems to me that once you strap on an xpap you are going to taint or skew the results compared to a no machine sleep evaluation.

I think the points about the many smaller events being lost is very valid.

Good luck

DSM
xPAP and Quattro std mask (plus a pad-a-cheek anti-leak strap)

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rested gal
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Post by rested gal » Sun Oct 08, 2006 3:45 pm

Lisa, back in this topic: viewtopic.php?t=13678
Were these numbers (from that topic) a night when your husband was using the BiPAP Auto?

summary
max titrated pressure 18.7
avg device ipap 90% time 13.0
max titrated epap pressure 15.7
avg device epap pressure 90% 10.6
avg time in apnea per day 13 sec
avg time in large leak 25.6 sec

one day
90% ipap 14.8
90% epap 12.2
nr 0.0
fl 2.0
h 0.8
s 11.5
ahi 1.1


If those are your husband's numbers, do you remember what operating mode and what pressure settings the BiPAP Auto was on?

ABPAP or AbFLE - which?
EPAP ___
IPAP ___
If ABPAP mode, what Rise time (if any) did you set? (0, 1, 2, or 3?)
If AbFLE mode, what degree of BiFlex did you set? (1,2, or 3?)

Whomever those numbers belong to (you? your husband?) it looks like the machine was having to take actions, presumably to prevent events and treat the person well enough to result in that nice low AHI.

dsm, right, it won't be at all like gathering diagnostic data with a real PSG sleep study using no cpap. However, it may be better than doing nothing whatsoever if Lisa's husband absolutely will not go in for a sleep study. Might even give him just enough of a peek at what's going on in his sleep to realize that he should go for a complete study.
ResMed S9 VPAP Auto (ASV)
Humidifier: Integrated + Climate Control hose
Mask: Aeiomed Headrest (deconstructed, with homemade straps
3M painters tape over mouth
ALL LINKS by rested gal:
viewtopic.php?t=17435

lzrgroup
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Joined: Wed Sep 20, 2006 1:04 pm

Post by lzrgroup » Mon Oct 09, 2006 8:54 am

those were his numbers, the machine is set on abfle and c flex is set on the easiest to breath with, he used it for about a week