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Low pressure
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Zzzmeg Offline

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Posts: 2
Joined: Apr 2015

Machine: ResMed autoset Hi5 S9 series
Mask Type: Nasal pillows
Mask Make & Model: Resmed
Humidifier: Resmed hi5
CPAP Pressure: 4
CPAP Software: Not using software

Other Comments:

Sex: Female
Location:

Post: #1
Low pressure
Anyone have any idea if it's possible to lower the machine lower than the minimum factory setting of 4 pressure? Thanks in advance!
04-04-2015 09:59 AM
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Lazer1234 Offline

Preferred Members

Posts: 77
Joined: Aug 2013

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: TapPap
Humidifier: Yes
CPAP Pressure: 8,6 - 20 EPR 3
CPAP Software: ResScan SleepyHead

Other Comments: Win7-64 SP1 SleepyHead v1.0.0-beta-1 ResScan 5,3

Sex: Male
Location: Sweden

Post: #2
RE: Low pressure
(04-04-2015 09:59 AM)Zzzmeg Wrote:  Anyone have any idea if it's possible to lower the machine lower than the minimum factory setting of 4 pressure? Thanks in advance!
NO, but if you put a bacterialfilter at the end of the hose nearest the mask, you get lower pressure to the mask.
04-04-2015 10:21 AM
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OpalRose Offline

Monitors

Posts: 3,181
Joined: Nov 2014

Machine: PR System One REMstar Auto 560 with A Flex
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10 For Her
Humidifier: REMStar heated humidifier with heated hose
CPAP Pressure: Auto Cpap 10-13 AFLEX 1
CPAP Software: SleepyHead EncoreBasic

Other Comments: Started CPAP Therapy October 23, 2014

Sex: Female
Location: Northeast Ohio, USA

Post: #3
RE: Low pressure
(04-04-2015 09:59 AM)Zzzmeg Wrote:  Anyone have any idea if it's possible to lower the machine lower than the minimum factory setting of 4 pressure? Thanks in advance!

ZZzmeg,
On your other thread, you were giving very good advice on pressure settings, based on the infomation you gave.

CPAP machines cannot go lower than 4, but even on that setting most folk feel as if they are not getting enough air. Almost too hard to breath in or a suffocating feeling.

It would be better if you were using software to monitor your apneas and then determine a pressure setting based on that.
Good luck with your therapy...were here to help.
OpalRose Smile

Thanks for filling out your profile, but now I see you are using nasal pillows. That's good, but especially with nasal pillows, you will have a hard time breathing with a pressure of 4.

OpalRose
(This post was last modified: 04-04-2015 10:39 AM by OpalRose.)
04-04-2015 10:33 AM
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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: #4
RE: Low pressure
(04-04-2015 10:21 AM)Lazer1234 Wrote:  
(04-04-2015 09:59 AM)Zzzmeg Wrote:  Anyone have any idea if it's possible to lower the machine lower than the minimum factory setting of 4 pressure? Thanks in advance!
NO, but if you put a bacterialfilter at the end of the hose nearest the mask, you get lower pressure to the mask.

I suppose you could also tie a knot in the hose... But I don't think that would be too great of an idea either.

Zzz? You need to focus on:
1.. Do you have apnea?
2.. What pressures are required to abate it.

If the answer to the first question is "No," then you can safely turn off the machine and put it in the closet. Otherwise you need to do whatever is required for you to have a successful outcome using the machine. That means find out what events you are experiencing, and at what pressure they are removed. I don't know what that number will be, but I'm pretty sure it isn't going to be "4."
04-04-2015 10:49 AM
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truetopath Offline

Preferred Members-2

Posts: 421
Joined: Feb 2015

Machine: PR system one 560p auto with a flex
Mask Type: Full face mask
Mask Make & Model: Resumed F10
Humidifier: PR system one
CPAP Pressure: 11
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Lake View, NY

Post: #5
RE: Low pressure
Most people have a hard enough time breathing I 4cm. I can't imagine going any lower than that. When I used the ramp I had it set at 8, and even that wasn't the most comfortable.
04-04-2015 10:56 AM
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Lazer1234 Offline

Preferred Members

Posts: 77
Joined: Aug 2013

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: TapPap
Humidifier: Yes
CPAP Pressure: 8,6 - 20 EPR 3
CPAP Software: ResScan SleepyHead

Other Comments: Win7-64 SP1 SleepyHead v1.0.0-beta-1 ResScan 5,3

Sex: Male
Location: Sweden

Post: #6
RE: Low pressure
(04-04-2015 10:21 AM)Lazer1234 Wrote:  
(04-04-2015 09:59 AM)Zzzmeg Wrote:  Anyone have any idea if it's possible to lower the machine lower than the minimum factory setting of 4 pressure? Thanks in advance!
NO, but if you put a bacterialfilter at the end of the hose nearest the mask, you get lower pressure to the mask.

Would like to clarify a bit, do not try this.
04-04-2015 11:08 AM
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estgad Offline

Preferred Members

Posts: 26
Joined: Mar 2015

Machine: AirCurve 10 vauto
Mask Type: Nasal pillows
Mask Make & Model: Airfit P10
Humidifier: AirCurve 10
CPAP Pressure: 9.2 PS 4.6 TiMax 3.2 TiMin 0.6
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: IL.

Post: #7
RE: Low pressure
a few other things you need to consider. The machine has to blow a certain amount of air (positive air pressure) to keep the air way open when you are inhaling and exhaling. I believe that the studies have shown that 4 is the minimum that would work to keep the airway open.

A second issue is with co2. I believe that a pressure below 4 does not allow for all of the exhaled co2 to be cleared, so that means you start re-breathing the exhaled air, which messes up the o2 and co2 levels in your body.

If you are having a lot of pressure with exhaling, perhaps you need to talk to your doc about testing out bi-pap instead of straight cpap?
04-04-2015 11:28 AM
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AshSF Online

Advisory Members

Posts: 356
Joined: Oct 2014

Machine: PRS1 D560TS
Mask Type: Nasal pillows
Mask Make & Model: ResMed P10, Bkup: Airfit F10 & Quattro Air
Humidifier: PRS1 60 series with Heated Tube
CPAP Pressure: 8 - 8 w/ Aflex 3
CPAP Software: SleepyHead

Other Comments: Using APAP mode with fixed pressure

Sex: Male
Location:

Post: #8
RE: Low pressure
FWIW, Devilbiss machines advertise a minimum pressure of 3cm H20.

Started APAP 4-20, Closed range to 7.5-14, then straight 8.0 w/ Aflex 3
RDI always below 1. But sleep much much better at straight pressure.
Started on F10, Tried Quattro Air successfully. Finally settled on P10.
04-04-2015 11:38 AM
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Krish Offline

Members

Posts: 4
Joined: Apr 2015

Machine: unsure
Mask Type: Oral
Mask Make & Model: unsure
Humidifier: unsure
CPAP Pressure: nsure
CPAP Software: Other Software

Other Comments:

Sex: Male
Location: India

Post: #9
RE: Low pressure
There will be minimum pressure level, you cannot lower that level.

Sleep Disorder Treatment : http://thehealthysleep.in/
04-07-2015 04:59 AM
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