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Leak rate
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jimvers Offline

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Posts: 5
Joined: Dec 2013

Machine: resmed s9 Auto
Mask Type: Full face mask
Mask Make & Model: Respiranics amara
Humidifier: ResMed H51
CPAP Pressure: 5-12
CPAP Software: SleepyHead

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Sex: Male
Location: Illinois

Post: #1
Leak rate
Just got the new Resmed Mirage Quatro full facemask. Was wondering is a 95% leak rate of 28L/min acceptable rate?
10-06-2014 04:00 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: Leak rate
(10-06-2014 04:00 PM)jimvers Wrote:  Just got the new Resmed Mirage Quatro full facemask. Was wondering is a 95% leak rate of 28L/min acceptable rate?
As long as Mr nice guy "happy face" (not frawny face) showing his face on the screen in the morning, the S9 consider leak is acceptable

The S9 report unintentional leak, 95th percentile leak 28 L/m mean leak was at or below 28 L/m for 95% of the night, not 28 L/m all night

For detailed information, download either/both software, SleepyHead or ResScan
http://www.apneaboard.com/forums/Forum-Private-Files-and-Links

ResScan for windows only, SleepyHead for windows and Mac
10-06-2014 04:16 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: #3
RE: Leak rate
It would be good to get it a little lower Jim.

But the 95% rate quoted can be a little misleading. If you look at your sleepyhead leak graph, are you usually well under that number and just occasionally it jumps up there, or is it pretty high most of the time?

It's an artform, not a science, but basically you do want to try to keep the leaks as low as possible. Resmed doesn't handle things well if it's over 24, and I'm not so sure they do all that well if it's higher than about 10 or so.
10-06-2014 04:28 PM
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justMongo Offline

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Posts: 3,853
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #4
RE: Leak rate
What's your pressure during the periods of high leak?
I see you run an APAP between 4 and 12.
If you fit the mask at 4, then it will leak at 12.

I like the MQ FFM... my advice is to tighten it up a bit.

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.
10-06-2014 04:40 PM
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TorontoCPAPguy Offline

Preferred Members-2

Posts: 143
Joined: May 2012

Machine: S9 Autoset II
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro FFM
Humidifier: H5i; Control III Germicide
CPAP Pressure: 12-20
CPAP Software: ResScan SleepyHead

Other Comments: CMS50EW Oximeter; Everflo Q O2 Concentrator; O2 Analyzer; Climate Control Hose (winter)

Sex: Male
Location: Toronto; Southern USA; etc.

Post: #5
RE: Leak rate
Look in the manual for the mask. It has a chart at the back.

----------------------------------------------------------------------------
Educate, Advocate, Contemplate.
Herein lies personal opinion, no professional advice, which ALL are well advised to seek.
10-09-2014 06:03 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: #6
RE: Leak rate
Unlike other machines report total leak, ResMed machines subtract intentional leak from total leak and report unintentional leak (mask leak plus mouth leak). The S9 knows the intentional leak of all ResMed masks, you only need let her knows the type of the mask you're using
10-09-2014 06:45 PM
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herbm Offline

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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: #7
RE: Leak rate
Actually the Resmed S9 doesn't distinguish Resmed masks models from others, just a generic Pillow vs. FFM (IIRC).

24 is the number to aim for with Resmed machines (around 60 for Respironics but I forget the exact number) and realistically it's easy to be MUCH LOWER than this so why not get it lower?

As others have said, if you had almost all of your time below 24 you wouldn't be doing so bad.

I seldom see any 95% even NEAR to 24. (I did see this the week or two I used the mask the PUPPY ATE which had terrible leaks.)

Also note that if you are leaking this much, even if getting good therapy, you may well be awakened by the leaks, either the air stream or the noise.

Being awakened or even just having your sleep partially disturbed has SOME of the disadvantages of OSA even.

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."
10-09-2014 09:40 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: #8
RE: Leak rate
(10-09-2014 09:40 PM)herbm Wrote:  Actually the Resmed S9 doesn't distinguish Resmed masks models from others, just a generic Pillow vs. FFM (IIRC).
Other manufacturers masks have a slightly different vents leak rates, but does not matter much difference in scheme of things

I'm not terribly fussed by the that number on the screen, at times can be way above 24 but only for a short time when looked closely
10-09-2014 10:03 PM
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