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7L/minute leak
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Gaspnea Offline

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Posts: 27
Joined: Aug 2012

Machine: ResMed S9 Elite
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed H5i
CPAP Pressure: 12.4
CPAP Software: SleepyHead

Other Comments: My pressure was prescribed by my doctor at 11 but I've upped it to 12.4 on my own.

Sex: Female
Location: Florida, USA

Post: #1
7L/minute leak
Hi all. According to my machine's data, I had a 7 liter/minute leak last night. My pressure is 11 so how does this translate? Is that a bad leak? I feel stupid as I am still trying to figure out my way around this machine's readouts and data retrieval procedure so now I'm wondering how many other nights I've had bad leaks.
10-01-2012 08:19 AM
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jdireton Offline

Preferred Members-2

Posts: 149
Joined: Feb 2012

Machine: Resmed S9 Elite
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: Resmed H5i
CPAP Pressure: 12
CPAP Software: ResScan

Other Comments: ClimateLine Hose

Sex: Male
Location: Florida

Post: #2
RE: 7L/minute leak
Gasp,

Resmed report the unintentional leakage, in other words the leakage in excess of what is expected through the purge ports on your mask. Resmed indicates that anything less than 24 l/min is acceptable, or more accurately, anything greater than 24 l/min is a problem. At leakage above this 24 l/min rate, your therapy may be compromised and the data your machine reports may not be accurate.

Long way of saying 7 l/min is great!
10-01-2012 09:31 AM
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trish6hundred Offline

Advisory Members

Posts: 6,429
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: #3
RE: 7L/minute leak
Hi Gaspnea, Please don't feel stupid about what you don't know, none of us can know everything. The fact that you are willing to learn will take you a long way so don't sweat the small stuff, just keep on trying.

trish6hundred
10-01-2012 02:04 PM
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lonnieb Offline

Preferred Members-2

Posts: 113
Joined: Jul 2012

Machine: ResMed S9
Mask Type: Nasal mask
Mask Make & Model: Phillips ComfortGel Blue
Humidifier: ResMed H5i
CPAP Pressure: 7 - 13
CPAP Software: ResScan SleepyHead

Other Comments: I intend to live forever. So far, so good:Steven Wright

Sex: Male
Location: Tennessee

Post: #4
RE: 7L/minute leak
Gaspnea Wrote:
Hi all. According to my machine's data, I had a 7 liter/minute leak last night. My pressure is 11 so how does this translate? Is that a bad leak? I feel stupid as I am still trying to figure out my way around this machine's readouts and data retrieval procedure so now I'm wondering how many other nights I've had bad leaks.


Hi Gaspnea
7 liter/minute is not a bad leak mine is different each night but is more than 7 most of the time.
Sleep-well
10-01-2012 07:04 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: #5
RE: 7L/minute leak
[Image: images?q=tbn:ANd9GcTOyllexfadRfwKJLxQtqp...hDgDoPdFWr] the S9 subtract the expected mask vents leak (about 32 L/min for nasal mask at pressure 11) from total leak and display 95% percentile leak which is mask plus mouth leak. in this case its 7 L/min ... excellent
it means leak been AT and BELOW 7 L/min for 95% of the time and higher for the other 5%
to dig deeper ... you need to look at the resscan leak graph and see whats going on
10-01-2012 07:37 PM
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Sleepster Offline
Wiki Editor
Moderators

Posts: 4,988
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: #6
RE: 7L/minute leak
(10-01-2012 08:19 AM)Gaspnea Wrote:  Hi all. According to my machine's data, I had a 7 liter/minute leak last night. My pressure is 11 so how does this translate?

That's a very good leak rate. Nothing to worry about. I think anything less than 35 L/min is acceptable for your machine.

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.
10-01-2012 09:53 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: #7
RE: 7L/minute leak
(10-01-2012 09:53 PM)Sleepster Wrote:  
(10-01-2012 08:19 AM)Gaspnea Wrote:  Hi all. According to my machine's data, I had a 7 liter/minute leak last night. My pressure is 11 so how does this translate?

That's a very good leak rate. Nothing to worry about. I think anything less than 35 L/min is acceptable for your machine.
maybe for system one machines but its not acceptable for an S9
S9 acceptable leak anything less than [Image: images?q=tbn:ANd9GcR5zC9Hw704xmT74cvZZhA...ejNztOj0lQ] L/min
10-01-2012 10:21 PM
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b360155 Offline

Preferred Members-2

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: #8
RE: 7L/minute leak
(10-01-2012 09:31 AM)jdireton Wrote:  Gasp,

Resmed report the unintentional leakage, in other words the leakage in excess of what is expected through the purge ports on your mask. Resmed indicates that anything less than 24 l/min is acceptable, or more accurately, anything greater than 24 l/min is a problem. At leakage above this 24 l/min rate, your therapy may be compromised and the data your machine reports may not be accurate.

Long way of saying 7 l/min is great!

Agree with jdireton. There is no correlation in data results for leak rate and pressure setting. With Resmed anything under 24.0 l/min unintentional leak rate is acceptable. Even if you have an occasional spike above 24.0 l/min if you're viewing your results on ResScan or Sleepyhead software graphs is OK as long as you're not spending prolonged periods of time above the 24.0 l/min line. The lower the better, but 7 is a very good score. Don't obsess about getting to 0.0 leak rate. I get there on some nights and most nights I'm in the single digits. The most important thing provided you're under the 24.0 l/min line is that you're getting a good night's sleep.

We're all family here...you can call me B36 if you'd like!Cool
10-02-2012 05:49 AM
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Gaspnea Offline

Preferred Members

Posts: 27
Joined: Aug 2012

Machine: ResMed S9 Elite
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed H5i
CPAP Pressure: 12.4
CPAP Software: SleepyHead

Other Comments: My pressure was prescribed by my doctor at 11 but I've upped it to 12.4 on my own.

Sex: Female
Location: Florida, USA

Post: #9
RE: 7L/minute leak
Thank you to all of you for this great information! I suppose it would help if I'd read the owner's manual for the machine but I don't seem to have one. I am still in the process of finding out whether they have unscrupulously given me a used machine. I suspect they have since...where is the manual?
10-02-2012 07:23 AM
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jdireton Offline

Preferred Members-2

Posts: 149
Joined: Feb 2012

Machine: Resmed S9 Elite
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: Resmed H5i
CPAP Pressure: 12
CPAP Software: ResScan

Other Comments: ClimateLine Hose

Sex: Male
Location: Florida

Post: #10
RE: 7L/minute leak
Gasp,

You can download the Owners Manual from the Resmed web site. If you want to take it a step further, look in the Private Files and Lnks section of this forum for instructions on requested the Clinician Manual. The Clinician Manual has instructions on how to adjust basically every aspect of the machine performance. I'd also recommend that you look into downloading the ResScan software. Instructions on how to do that can be found in the same place.

As far as having a used machine, it's very common. In the information screen of your machine should be a total hours number. This number cannot be reset. If it doesn't make sense, challenge your DME strongly. If you paid for new, get new. If you're renting under insurance, they may say you have to use the used machine. In that case check with your insurance and make sure you get a "new" machine when the rental period is over. Let us know how this goes. We can give you some advice on how to "persuade" DME's that has worked for others.

Sleep-well
10-02-2012 07:56 AM
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