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Leak rate question
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GrammaBear Offline

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Posts: 381
Joined: May 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: Air Fit P10
Humidifier: ResMed H5i heated humidifier
CPAP Pressure: 12.2 - 16.2
CPAP Software: SleepyHead

Other Comments: Type 1 diabetes - using Tandem T-slim insulin pump, Dexcom G4 CGM

Sex: Female
Location: northern Illinois

Post: #1
Leak rate question
I have a S9 Autoset machine with the humidifier. Recently I have a cold and I have a question. Does having a cold affect the 'leak rate' of a machine? I use the Airfit P10 nasal pillow. I have only two pillows, which I alternate nightly. The pillows themselves are probably 6-8 weeks old. Or is it the pillows that are becoming old that makes the leak rate higher? One night the leak rate was 9, last night leak rate was 23, another night leak rate was 30.

In regard to the pillows, how do you know when it is time to replace them?

Thanks for any comments.
02-27-2014 10:55 AM
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trish6hundred Offline

Advisory Members

Posts: 6,451
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #2
RE: Leak rate question
Hi GrammaBear,
You might try a sinus wrince, such as Neomed; it comes in a bottle from what I have read here on the board. The wrinces help you to clear your head before you llye down to sleep.
Hang in there for more suggestions.
Hope you feel better, soon.

trish6hundred
02-27-2014 12:35 PM
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mjbearit Offline

Preferred Members-2

Posts: 605
Joined: May 2012

Machine: REMstar Auto AFlex DS550
Mask Type: Nasal pillows
Mask Make & Model: RESMed Swift FX
Humidifier: Heated humidifier - 2
CPAP Pressure: 12.5-20
CPAP Software: SleepyHead EncoreBasic

Other Comments:

Sex: Male
Location: So Cal

Post: #3
RE: Leak rate question
I remember looking at the leak rate chart on the ResMed site for my nasal mask and the leak rate changed according to the pressure. So I guess in answer to your question if it is an autoset, then the higher the pressure the more it is designed to leak at the exhaust port. If your sinuses are plugged up, I would think it would use a higher pressure to get through that, but I could be wrong.
Mike

As always, YMMV! You do not have to agree or disagree, I am not a professional so my mental meanderings are simply recollections of things from my own life.

PRS1 - Auto - A-Flex x2 - 12.50 - 20 - Humid x2 - Swift FX
02-27-2014 12:52 PM
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Peter_C Offline

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Posts: 1,308
Joined: Sep 2013

Machine: System One DS960HS
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro "MED"
Humidifier: Attached
CPAP Pressure: Auto mode-script is:15/3/3
CPAP Software: EncoreBasic Other Software

Other Comments: Severe obstructive sleep apnea 1999/Just got an ASV machine

Sex: Male
Location: Akron, Ohio USA

Post: #4
RE: Leak rate question
(02-27-2014 10:55 AM)GrammaBear Wrote:  I have a S9 Autoset machine with the humidifier. Recently I have a cold and I have a question. Does having a cold affect the 'leak rate' of a machine? I use the Airfit P10 nasal pillow. I have only two pillows, which I alternate nightly. The pillows themselves are probably 6-8 weeks old. Or is it the pillows that are becoming old that makes the leak rate higher? One night the leak rate was 9, last night leak rate was 23, another night leak rate was 30.

In regard to the pillows, how do you know when it is time to replace them?

Thanks for any comments.

Depending on how stuffed up you are, the cold could cause you to mouth-breathe, which is a 'leak' in itself.

Personally, I have found that raising my humidity to just under rain-out helps to un-stuff me so I can breathe. Others may like the reverse.

I have always had a FFM as a backup for really bad nights that I felt I could not breathe through my nose.

As for replacing parts, personally I do not replace anything until it actually dies - but many others replace the 'pillows' as often as every 90 days.
HTH

*I* am not a DOCTOR or any type of Health Care Professional. My thoughts/suggestions/ideas are strictly only my opinions.

"Only two defining forces have ever offered to die for you. Jesus Christ and the American Soldier. One died for your Soul, the other for your Freedom."
02-27-2014 01:07 PM
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me50 Offline

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Posts: 2,559
Joined: Aug 2013

Machine: resmed S9 VPAP Auto
Mask Type: Nasal mask
Mask Make & Model: Wisp and Silicone Head gear
Humidifier: resmed H5i
CPAP Pressure: 18/8
CPAP Software: SleepyHead

Other Comments:

Sex: Undisclosed
Location: USA

Post: #5
RE: Leak rate question
Everyone has their preference on changing out supplies. I don't want to have to try and figure out if it is time to replace them so I replace them according to the medicare guidelines.
02-27-2014 07:51 PM
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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: #6
RE: Leak rate question
As Pete, the Tricycle King mentioned, if you have a stuffy nose you will compensate for that by breathing though your mouth. Don't worry too much about it until you get over your cold, then see where you are. If it continues to be a problem then you might consider a chinstrap, or even a different mask, such as a full face mask. But you had successes before, so I'm confident you'll get back there (under 24 leak rate) once your body decides it no longer wishes to experience a stuffy cold.
02-28-2014 02:33 PM
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Sleepster Offline
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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: #7
RE: Leak rate question
(02-27-2014 10:55 AM)GrammaBear Wrote:  One night the leak rate was 9, last night leak rate was 23, another night leak rate was 30.

It's hard to say because we're looking only at average leak rates. You need software so you can see the leak rate graph. You'll be able to tell at a glance if you're spending significant amounts of time in large leak. If that's the case, and I suspect it might be, then your problem could be mouth-leaking.

Are you using a chin strap and is it tight enough? As mine wears out I have to tighten it. It should be loose enough that you can talk comfortably, but if you try chewing it should be uncomfortable.

Quote:In regard to the pillows, how do you know when it is time to replace them?

That's a tough one. Insurance regs in the US used to say every two weeks, but now seem to be saying every 3-4 weeks. In other countries the regs seem to indicate that they should last much longer.

I remember replacing a two-week-old pillow and thinking it was significantly different. But I've got two I've been alternating for three months now and they seem fine. Thinking-about

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.
02-28-2014 02:46 PM
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zonk Offline

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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: #8
RE: Leak rate question
(02-27-2014 10:55 AM)GrammaBear Wrote:  One night the leak rate was 9, last night leak rate was 23, another night leak rate was 30.
Mine does vary from one night to the next too, as far as the machine concerned its not a problem as long as Mr Smiley (not Mr Frowny) shows up on the screen. If your mouth feel dry in the morning might indicate some mouth breathing, full face face is not a bad idea until you get over the cold. Get well soon
02-28-2014 03:14 PM
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