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Perception of Pressure: at night vs in the morning
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hippipdip Offline

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Joined: Mar 2012

Machine: PR remstar pro system one
Mask Type: Full face mask
Mask Make & Model:
Humidifier: unsure
CPAP Pressure: 10
CPAP Software: Not using software

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Sex: Male
Location:

Post: #1
Perception of Pressure: at night vs in the morning
Hello:

I've had my machine almost 3 weeks now. Put it on and generally fall asleep promptly, even without using ramp any longer. Very comfortable.

I notice though, that when I wake up in the AM the pressure does not feel as intense when I wake up as when I fell asleep. Is this simply a mental adjustment, being used to it? Or does the machine automatically vary its pressure levels?

It is set to 10. I can't tell if its in my head, the machine, or some complication with me blocking the hose by my sleep position.

Hope that makes sense.

Thanks.
04-10-2012 03:52 PM
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greatunclebill Offline

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Posts: 549
Joined: Feb 2012

Machine: Respironics System one Auto A-Flex
Mask Type: Full face mask
Mask Make & Model:
Humidifier: System one
CPAP Pressure: 8-12
CPAP Software: SleepyHead EncoreViewer

Other Comments: quattro fx full face

Sex: Male
Location: L.A. (Lower Alabama)

Post: #2
RE: Perception of Pressuat night vs in the morning
(04-10-2012 03:52 PM)hippipdip Wrote:  Hello:

I've had my machine almost 3 weeks now. Put it on and generally fall asleep promptly, even without using ramp any longer. Very comfortable.

I notice though, that when I wake up in the AM the pressure does not feel as intense when I wake up as when I fell asleep. Is this simply a mental adjustment, being used to it? Or does the machine automatically vary its pressure levels?

It is set to 10. I can't tell if its in my head, the machine, or some complication with me blocking the hose by my sleep position.

Hope that makes sense.

Thanks.

it feels different in the morning because you are getting used to it. the pressure itself is actually pretty low. it is measured as cm/h20. for instance 10 is the amount of pressure it takes to raise a column of water 10 cm. so as you can see the difference between the top and bottom of the scale is not that great. i think in terms of PSI it would all be in the 2 range someplace.
04-10-2012 04:17 PM
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PaulaO2 Offline
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Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #3
RE: Perception of Pressure: at night vs in the morning
Yep, your body has gotten used to it during the night.

Congrats, that means you're using it like you should!

Often in the morning, I have to put my hand in front of the mask to prove it is on.
04-11-2012 12:01 AM
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Dreamcatcher Offline

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Machine: Resmed Autoset Spirit II with Quattro F/F & FX Masks
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Humidifier: H4i
CPAP Pressure: 10 - 18 cmH20 (auto range)
CPAP Software: ResScan SleepyHead Other Software

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Sex: Male
Location:

Post: #4
RE: Perception of Pressuat night vs in the morning
(04-11-2012 12:01 AM)PaulaO2 Wrote:  Yep, your body has gotten used to it during the night.

Congrats, that means you're using it like you should!

Often in the morning, I have to put my hand in front of the mask to prove it is on.

How many times have you laid there awake thinking is it on or not, it becomes like a game. Big Grin
04-11-2012 02:57 AM
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b360155 Offline

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Posts: 265
Joined: Feb 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX & Quattro Air
Humidifier: ResMed H5i
CPAP Pressure: 11.4
CPAP Software: ResScan SleepyHead

Other Comments: CMS50-D Plus Pulse Oximeter!

Sex: Male
Location: North Richland Hills, TX

Post: #5
RE: Perception of Pressuat night vs in the morning
(04-10-2012 03:52 PM)hippipdip Wrote:  Hello:

I've had my machine almost 3 weeks now. Put it on and generally fall asleep promptly, even without using ramp any longer. Very comfortable.

I notice though, that when I wake up in the AM the pressure does not feel as intense when I wake up as when I fell asleep. Is this simply a mental adjustment, being used to it? Or does the machine automatically vary its pressure levels?

It is set to 10. I can't tell if its in my head, the machine, or some complication with me blocking the hose by my sleep position.

Hope that makes sense.

Thanks.

I've noticed the exact same thing and still notice it after 6 months of therapy. I'm guessing that when you first turn the pressure on, it's pumping air into your system and after a certain amount of time, it normalizes itself.

We're all family here...you can call me B36 if you'd like!Cool
04-11-2012 06:10 AM
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DCwom Offline

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Posts: 36
Joined: Feb 2012

Machine: REMstar Auto A-Flex
Mask Type: Nasal pillows
Mask Make & Model: Go life
Humidifier: REMstar
CPAP Pressure: Auto
CPAP Software: Not using software

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Post: #6
RE: Perception of Pressuat night vs in the morning
(04-10-2012 03:52 PM)hippipdip Wrote:  I notice though, that when I wake up in the AM the pressure does not feel as intense when I wake up as when I fell asleep. Is this simply a mental adjustment, being used to it? Or does the machine automatically vary its pressure levels?

Auto adjustment depends on your machine, but like others have said you've probably adjusted to the airflow by the AM, this is why the ramp function works, you adjust over time. Another thing may be that toward morning you're not in such a deep sleep and the machine has lighten up on the pressure if it is auto adjusting.
04-11-2012 07:56 AM
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greatunclebill Offline

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Posts: 549
Joined: Feb 2012

Machine: Respironics System one Auto A-Flex
Mask Type: Full face mask
Mask Make & Model:
Humidifier: System one
CPAP Pressure: 8-12
CPAP Software: SleepyHead EncoreViewer

Other Comments: quattro fx full face

Sex: Male
Location: L.A. (Lower Alabama)

Post: #7
RE: Perception of Pressuat night vs in the morning
his details and post both mention pressure of 10 so i ass-u-me that he is dealing with constant pressure (cpap) and not automatic pressure (apap). in that case, the machine would not be auto adjusting itself. i could be wrong. i was wrong once and paula has it marked on her calendar LOL.....
04-11-2012 08:12 AM
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CHanlon Offline

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Machine: ResMed S9 Autoset
Mask Type: Nasal mask
Mask Make & Model: ResMed Activa LT
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CPAP Pressure: 12 -20
CPAP Software: ResScan SleepyHead

Other Comments: Mirage Activa LT nasal mask

Sex: Male
Location: Ontario, Canada

Post: #8
RE: Perception of Pressuat night vs in the morning
(04-11-2012 08:12 AM)greatunclebill Wrote:  i could be wrong. i was wrong once and paula has it marked on her calendar LOL.....
I thought I was wrong once, but I found out later I was mistaken. Smile
04-11-2012 10:59 AM
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Sleepster Offline
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Machine: ResMed AirCurve10 VAuto
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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: #9
RE: Perception of Pressuat night vs in the morning
(04-10-2012 03:52 PM)hippipdip Wrote:  I can't tell if its in my head, the machine, or some complication with me blocking the hose by my sleep position.

As you can seen from the other replies, it is all in your head. You're getting acclimated to the CPAP therapy.

This is normal, as is wondering if the machine is still on. I wear a nasal mask (pillows, actually) so all I have to do is open my mouth, lower the back of my tongue, and feel the air hissing out to confirm that the machine really is still on.

Sleepster
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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.
(This post was last modified: 04-11-2012 07:28 PM by Sleepster.)
04-11-2012 07:13 PM
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Sleepster Offline
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Posts: 4,993
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: #10
RE: Perception of Pressuat night vs in the morning
(04-10-2012 04:17 PM)greatunclebill Wrote:  the pressure itself is actually pretty low. it is measured as cm/h20. for instance 10 is the amount of pressure it takes to raise a column of water 10 cm. so as you can see the difference between the top and bottom of the scale is not that great. i think in terms of PSI it would all be in the 2 range someplace.

Let's see, what's the easiest way to do this calculation? Scuba divers learn that a depth of 10.3 meters (34 ft) is what it takes to increase the pressure by one atmosphere, which is about 15 psi.

So, let's see, 10 cm is about one hundred times smaller than 10.3 meters. If we make 15 psi one hundred times smaller we get 0.15 psi. That's not anywhere near enough to unflatten a flat tire, in fact, it wouldn't even blow up a balloon, would it?

But it's enough to keep our airways open while we sleep. Great Uncle, it's a miracle! I can't imagine how horrible my life would be without it.

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.
04-11-2012 07:23 PM
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