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Pressure took a time-out last night..
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retired_guy Offline

Preferred Members-2

Posts: 2,744
Joined: Jan 2014

Machine: ResMed S9 Autoset
Mask Type: Nasal pillows
Mask Make & Model: Resmed Airfit P10
Humidifier: ResMed
CPAP Pressure: 10.6/14, EPR 3
CPAP Software: ResScan SleepyHead

Other Comments: Is it bedtime yet?

Sex: Male
Location: Beautiful, albeit very wet Oregon Coast

Post: #1
Pressure took a time-out last night..
I like my little Resmed Auto-thingy. It's running on factory default as I have not tweaked any of the original settings. So it starts at 5 whatsits, and climbs to 15, then hovers between 12 and 15 pretty much all night. I like it that it doesn't normally feel a need to get my attention in the middle of the night, and I can just focus on the nice suction cup on my face.

But last night was different. All of a sudden (according to Sleepyhead) around 1:00 am the pressure started a slow decline until it hit 7. Then it stayed there for about an hour then began a slow ascent back to 15, arriving at 3:00 am. I woke up thinking I wasn't getting enough air and checked to make sure power was still on in the house. But that's about as awake as I got, so if something else was going on I don't know what it was. I continued to breath, and things got better. Or seemed to be better.

Is it normal for something like that to happen? Did my machine swallow one of the cats when I wasn't looking?

Like I said, I like my little machine to take care of all the silly details during the night so I don't have to. But I'm not sure I like it taking a two hour time-out right when I'm trying to sleep.

Any clues? Is this normal? Am I normal?
02-11-2014 10:24 PM
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zonk Offline

Advisory Members

Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #2
RE: Pressure took a time-out last night..
(02-11-2014 10:24 PM)retired_guy Wrote:  Any clues? Is this normal? Am I normal?
There,re is no such thing as normal, everyone is different ... You,re one of a kind Coffee

The machine increase pressure (providing leak is controlled) to deal with some flow limitation and apnea events, as breathing stabilizes and all normal again, the pressure run backwards towards the minimum. Its a disrupting cycle to my sleep, i prefer pressure to be close to the minimum (not lower) which is treatment pressure and not rise by much during the night.
02-11-2014 11:20 PM
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herbm Offline

Preferred Members-2

Posts: 852
Joined: Jan 2014

Machine: ResMed AutoSet S9
Mask Type: Oral
Mask Make & Model: ResMed Airfit P10 Nasal Pillow
Humidifier: ResMed H5i
CPAP Pressure: 11-16
CPAP Software: ResScan SleepyHead

Other Comments: Backup Mask: Innomed Hybrid FFM -- Oral+Nasal Pillows

Sex: Male
Location: Austin, TX

Post: #3
RE: Pressure took a time-out last night..
That's the 'seek' algorithm looking to improve and find the lowest pressure that will do that.

Zonk: Me too. I like pressure close to what I will use all night. I probably will end by setting mine to the 95% pressure since I prefer it higher and there's no reason to have it need to climb (much at all.)

Eventually I'll probably set the max to just higher than the max it has needed to use -- leaving a little head room in case the machine has not yet optimized or my apnea might change.

Sweet Dreams,

HerbM
Sleep study AHI: 49 RDI: 60 -- APAP 10-11 w/AHI: 1.5 avg for 7-days (up due likely to hip replacement recovery)

"We can all breathe together or we will all suffocate alone."
02-11-2014 11:42 PM
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Sleepster Offline
Wiki Editor
Moderators

Posts: 4,995
Joined: Feb 2012

Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: HumidAir and SlimLine Hose
CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

Other Comments: Diagnosed Nov 2011. Conquered aerophagia.

Sex: Male
Location: Houston, Texas

Post: #4
RE: Pressure took a time-out last night..
(02-11-2014 10:24 PM)retired_guy Wrote:  All of a sudden (according to Sleepyhead) around 1:00 am the pressure started a slow decline until it hit 7. Then it stayed there for about an hour then began a slow ascent back to 15, arriving at 3:00 am. I woke up thinking I wasn't getting enough air and checked to make sure power was still on in the house.

There are a couple of things that could be going on here. First of all, it's normal to wake up at any pressure and feel the need to check that the machine is still on. We get used to it being on, and our breathing slows when we relax and sleep, so we don't notice that it is on.

On the other hand, if it really was a drop in pressure that woke you up, or if it was the rising pressure after the drop that woke you up, you could raise that lower limit on your pressure a bit and see if that helps. Especially if this keeps happening to you.

Sleepster
Apnea Board Moderator
www.ApneaBoard.com


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
02-12-2014 10:27 PM
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