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[Pressure] S9 CPAP
#21
[attachment=368][attachment=369]
(02-14-2013, 08:10 PM)SleepyTime Wrote: Here's what I don't get. When I bought the S9, the tech at the store set it Low 5 and High 14.

I though the pressure would vary with my demand?
Could the S9 sensors be defective. Electronics do fail as we all know.
Any similar experience?

Btw thanks to the software I now know I have obstructive, central sleep apnea and hypopnea often in one night. Sometimes just hypopneas.
Only the pressure stays at the max!

Some of you suggested to raise the pressure to see whether the sensors respond to my pressure requirements. The attached graphs from last night seem to indicate that or do they?
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#22
They show that your machine is spending virtually all of its time at or very near your maximum pressure of 14 cm. You either need the pressure that high or your machine is running away on you.
Sleepster
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#23
According to the charts you had a signifigant OA just before 2am and this was when your machine was near your top pressure. You also have hypopneas at various times when your machine is at or near the max. It sure doesn't look to me like your machine is "running away" at all. Looks more to me like your machine is on too tight of a leash. If it were me, I would turn it loose and let it do its job - at least long enough to find out what pressure is necessary; then I would narrow the range to a couple cm above and below the median. If it were me, I would go ahead and set the minimum to about 12 or 13 because it'll probably stay higher than that anyway, then I'd set the top pressure at 20 and keep an eye on the charts for the next couple weeks. In my opinion it is easier to get used to high pressure than it is to get used to pressure that starts out real low then goes high when you sleep; but that's just my opinion.

EDIT:
P.S. What I said before is assuming that the night you linked is typical and is what has been happening for a while. Also, your leaks graph looks real good. Don't mind the Max leak on that night. It looks like when you woke up once you took the mask off before turning off the machine.
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#24
* sleep on your side
avoid sleeping on your back, as gravity makes it more likely for tongue to drop and obstruct the airway which causing the pressure to increase and flow limitation

* try tennis ball attached to back of pyjama top or t-shirt
you can sew a sock or pocket to the back of pyjama top, then put the tennis ball
the tennis ball is uncomfortable if you lie on your back, and you turn on your side
soon you,ll develop side-sleeping habit and not need the tennis balls
also a bum bag stuffed with tennis balls behind your back would do the trick too

* for ME when my nose get stuffy, makes breathing thru the nose difficult and pressure and FL increase
I find sinus rinse at night help breathing better while sleeping


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#25
(02-17-2013, 05:12 PM)jgjones1972 Wrote: According to the charts you had a signifigant OA just before 2am and this was when your machine was near your top pressure. You also have hypopneas at various times when your machine is at or near the max. It sure doesn't look to me like your machine is "running away" at all. Looks more to me like your machine is on too tight of a leash. If it were me, I would turn it loose and let it do its job - at least long enough to find out what pressure is necessary; then I would narrow the range to a couple cm above and below the median. If it were me, I would go ahead and set the minimum to about 12 or 13 because it'll probably stay higher than that anyway, then I'd set the top pressure at 20 and keep an eye on the charts for the next couple weeks. In my opinion it is easier to get used to high pressure than it is to get used to pressure that starts out real low then goes high when you sleep; but that's just my opinion.

EDIT:
P.S. What I said before is assuming that the night you linked is typical and is what has been happening for a while. Also, your leaks graph looks real good. Don't mind the Max leak on that night. It looks like when you woke up once you took the mask off before turning off the machine.

A month before I bought this machine, the supplier lent me another brand. I saw the printout yesterday and it had an average pressure of 7.5 with none at the max setting of 14.
Based on that, the medical supply store contacted ResMed who will log on to the store and test the S9 over the Internet! I didn't know they were set up to do that.
Anyway, by tonight I should know more. I assume they have competent technicians AND trustworthy.
Some of the large computer manufacturers outsource their customer services to non-English speakers who read from a script!
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#26
Well, apparently ResMed agreed that the machine I got a month ago is defective. They're sending a new one tomorrow.
Guess I'll go back to my old CPAP for a few days.

Thanks everybody for your advice and for sharing your experiences. Thanks
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#27
(02-19-2013, 11:32 PM)SleepyTime Wrote: Well, apparently ResMed agreed that the machine I got a month ago is defective. They're sending a new one tomorrow.
Guess I'll go back to my old CPAP for a few days.

Thanks everybody for your advice and for sharing your experiences. Thanks


Surprising. Actually, the results you posted from the first S9 AutoSet looked pretty reasonable and self-consistent to me, so I am in agreement with the observations made earlier by jgjones1972.

It could be that the first machine was defective, but, on the other hand, perhaps the ResMed representative may have agreed to perform the exchange for a brand new machine just to be completely sure that you will have a properly working machine.

If it turns out your results with the replacement S9 AutoSet are the same as with the first machine, I would trust the results shown by the two machines.

Please do let us know what results you get with the replacent unit, when it comes.

Take care,
--- Vaughn

Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.
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#28
(02-20-2013, 05:30 AM)vsheline Wrote:
(02-19-2013, 11:32 PM)SleepyTime Wrote: Well, apparently ResMed agreed that the machine I got a month ago is defective. They're sending a new one tomorrow.
Guess I'll go back to my old CPAP for a few days.

Thanks everybody for your advice and for sharing your experiences. Thanks


Surprising. Actually, the results you posted from the first S9 AutoSet looked pretty reasonable and self-consistent to me, so I am in agreement with the observations made earlier by jgjones1972.

It could be that the first machine was defective, but, on the other hand, perhaps the ResMed representative may have agreed to perform the exchange for a brand new machine just to be completely sure that you will have a properly working machine.

If it turns out your results with the replacement S9 AutoSet are the same as with the first machine, I would trust the results shown by the two machines.

Please do let us know what results you get with the replacent unit, when it comes.

Take care,
--- Vaughn

I was surprised too that they opted for sending a new machine. I hope that the readings were in fact due to a defective machine, because why else would a different machine have much lower readings only about a month ago!

I should know in a few days. At the moment I'm using a regular CPAP set at 10 cmH2O which seems to be OK other than the pressure giving me a dull headache but less than before with the AutoSet running at the max of 14 all the time.

I'll be back once I have the new machine working.
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#29
(02-17-2013, 04:46 PM)Sleepster Wrote: They show that your machine is spending virtually all of its time at or very near your maximum pressure of 14 cm. You either need the pressure that high or your machine is running away on you.

Solution: chain it to the table.
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#30
(02-20-2013, 07:48 PM)Ugly Wrote:
(02-17-2013, 04:46 PM)Sleepster Wrote: They show that your machine is spending virtually all of its time at or very near your maximum pressure of 14 cm. You either need the pressure that high or your machine is running away on you.

Solution: chain it to the table.

I can't chain it to the table, because it's on the tech's desk waiting to be returned when my new one arrives.Grin
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