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[CPAP] Why is the S9 leak always 6 liters/minute ?
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Doctor Offline

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Post: #1
Question Why is the S9 leak always 6 liters/minute ?
Six liters per minute leak seems like quite a bit. I read that up to 24 liters/minute is okay. My mask isn't leaking, so where are these six liters per minute going ?
(This post was last modified: 10-24-2015 11:01 PM by Doctor.)
10-24-2015 11:00 PM
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zonk Offline

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Post: #2
RE: Why is the S9 leak always 6 liters/minute ?
(10-24-2015 11:00 PM)Doctor Wrote:  Six liters per minute leak seems like quite a bit. I read that up to 24 liters/minute is okay. My mask isn't leaking, so where are these six liters per minute going ?
I assume, you're getting 6, from the screen sleep report as you're not using software
The S9 display 95th percentile unintentional leak (from mouth, mask, etc.), means leaks was at or below 6 L/m (not all long) for 95% of the night. If stuck at 6, might need rebooting
10-24-2015 11:20 PM
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Doctor Offline

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Post: #3
RE: Why is the S9 leak always 6 liters/minute ?
(10-24-2015 11:20 PM)zonk Wrote:  
(10-24-2015 11:00 PM)Doctor Wrote:  Six liters per minute leak seems like quite a bit. I read that up to 24 liters/minute is okay. My mask isn't leaking, so where are these six liters per minute going ?
I assume, you're getting 6, from the screen sleep report as you're not using software
The S9 display 95th percentile unintentional leak (from mouth, mask, etc.), means leaks was at or below 6 L/m (not all long) for 95% of the night. If stuck at 6, might need rebooting



Yes, 6 is on the screen but SleepyHead shows zero. Have rebooted the machine several times in the past year. I was told not to worry about the value until it exceeds 24.


Does anyone here have a leak of zero on their S9 screen ?
10-25-2015 02:20 AM
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DeepBreathing Offline
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Post: #4
RE: Why is the S9 leak always 6 liters/minute ?
(10-25-2015 02:20 AM)Doctor Wrote:  Does anyone here have a leak of zero on their S9 screen ?

I've only ever seen that once, just after I switched to a Simplus mask. As Zonk said the leak given on the machine is the 95 percentile. It could be caused by a transitory event like your mask being nudged slightly out of place if you move in your sleep. Unless leaks are causing you problems (eg blowing into your eyes or causing face-farts) then I wouldn't worry about it.

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10-25-2015 02:41 AM
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zonk Offline

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Post: #5
RE: Why is the S9 leak always 6 liters/minute ?
(10-25-2015 02:20 AM)Doctor Wrote:  Yes, 6 is on the screen but SleepyHead shows zero. Have rebooted the machine several times in the past year. I was told not to worry about the value until it exceeds 24.

Does anyone here have a leak of zero on their S9 screen ?
S9 sleep report shows 95%
SleepyHead shows ... Min, Med, 95%, Max
Which one showing zero?
I'm not sure of the definition of Min, mine always zero

I'm not fussed about leak, as long as don't disturb my sleep or goes near my eyes
(This post was last modified: 10-25-2015 03:57 AM by zonk.)
10-25-2015 03:48 AM
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Doctor Offline

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Post: #6
RE: Why is the S9 leak always 6 liters/minute ?
(10-25-2015 03:48 AM)zonk Wrote:  
(10-25-2015 02:20 AM)Doctor Wrote:  Yes, 6 is on the screen but SleepyHead shows zero. Have rebooted the machine several times in the past year. I was told not to worry about the value until it exceeds 24.

Does anyone here have a leak of zero on their S9 screen ?
S9 sleep report shows 95%
SleepyHead shows ... Min, Med, 95%, Max
Which one showing zero?
I'm not sure of the definition of Min, mine always zero

I'm not fussed about leak, as long as don't disturb my sleep or goes near my eyes



The one year of CPAP Stats on SleepyHead shows Average Leak Rate = 0.00, 90% Leak Rate 0.00, and % time above Leak Rate Threshold = 0.00 .

But the ResMed S9 screen never shows a leak rate of 0.
10-25-2015 05:41 PM
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zonk Offline

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Post: #7
RE: Why is the S9 leak always 6 liters/minute ?
(10-25-2015 05:41 PM)Doctor Wrote:  The one year of CPAP Stats on SleepyHead shows Average Leak Rate = 0.00, 90% Leak Rate 0.00, and % time above Leak Rate Threshold = 0.00 .

But the ResMed S9 screen never shows a leak rate of 0.
I guess, its a SH problem. I cannot imagine how could be zero for everything all this time, but then I don't have much of imagination
Have you tried ResScan, but doesn't like Mac
10-25-2015 06:55 PM
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Doctor Offline

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Post: #8
RE: Why is the S9 leak always 6 liters/minute ?
(10-25-2015 06:55 PM)zonk Wrote:  
(10-25-2015 05:41 PM)Doctor Wrote:  The one year of CPAP Stats on SleepyHead shows Average Leak Rate = 0.00, 90% Leak Rate 0.00, and % time above Leak Rate Threshold = 0.00 .

But the ResMed S9 screen never shows a leak rate of 0.
I guess, its a SH problem. I cannot imagine how could be zero for everything all this time, but then I don't have much of imagination
Have you tried ResScan, but doesn't like Mac



Good point, Zonk. Thanks Will try ResScan.
10-25-2015 08:51 PM
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PaytonA Online
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Post: #9
RE: Why is the S9 leak always 6 liters/minute ?
Interesting!!! I just looked at my leak rate statistics in Sleepyhead. What caught my interest was the fact that my average leak rate is 1.49 for the last 6 months and 1.43 for the last year. My 90% leak rate is 0 for the last 6 months and 0 for the last year. I do not think that this is mathematically impossible but it is mathematically improbable I think.

Frankly, I seldom look at the statistics in Sleepyhead.

Best Regards,

PaytonA
(This post was last modified: 10-25-2015 09:36 PM by PaytonA.)
10-25-2015 09:12 PM
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AlanE Online

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Post: #10
RE: Why is the S9 leak always 6 liters/minute ?
Sounds like an issue with the Sleepyhead and the S9. Mine seems to read okay.

6-months
ALR: 7
90% LR: 15.4



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

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10-26-2015 06:40 AM
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