boys, Your equipment profile shows you are using a BIPAP. ResMed has published a pressure-flow curve ( http://www.resmed.com/int/assets/docume ... ow_eng.pdf ) for the Swift FX which shows vent flow rates for straight CPAP pressures. How do you know the vent flow rate with this mask when using a BIPAP?jbn3boys wrote: I consistently run LOWER than the intended leak rate on my PR S1 machine. For example, my intended leak rate for my mask at my pressure is 37-40. My nightly average leaks over the last month have been 30-36.
Total Average Leak Rate on PR System One (Spiky Graphs!)
- NightMonkey
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
NightMonkey
Blow my oropharynx!
the hairy, hairy gent who ran amok in Kent
Blow my oropharynx!
the hairy, hairy gent who ran amok in Kent
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
I'm not sure if I've ever reached the intended leak rate. And I really don't think that I am ever blocking the vents. I just assumed it was normal. Anybody else with a PR S1 want to comment?BusyLyn wrote:But is it good for you to consistently run LOWER than the intended leak rate? I thought that you needed the intended leak to clear out the CO2 that you are breathing out...
Lyn
_________________
Mask: Swift™ FX For Her Nasal Pillow CPAP Mask with Headgear |
Additional Comments: titration 11 |
Sleep study (Aug 2010): AHI 16 (On mask AHI 0.2) <-- Now, if I could just attain that "0.2" again!
aPAP for 4 months, Switched to BiPap, 2nd sleep study Feb 2011 Possible PLMD
to quote Madalot..."I'm an enigma"
aPAP for 4 months, Switched to BiPap, 2nd sleep study Feb 2011 Possible PLMD
to quote Madalot..."I'm an enigma"
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
If the mask leak rate is (figuring on the low side) 20 liters per minute, and if you exhale 1 liter of air (figuring on the high side) with each breath and breathe 15 times a minute while sleeping (figuring on the high side), you would still have a reserve of 5 liters a minute to prevent re-breathing your exhaled air.
I think mask leak rates are closer to 30 liters per minute at the pressures commonly used, that exhale volume is closer to half a liter with each breath, and the rate of breathing is closer to 10 - 12 breaths per minute while asleep.
I think mask leak rates are closer to 30 liters per minute at the pressures commonly used, that exhale volume is closer to half a liter with each breath, and the rate of breathing is closer to 10 - 12 breaths per minute while asleep.
_________________
Mask: Brevida™ Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Machine is an AirSense 10 AutoSet For Her with Heated Humidifier. |
SpO2 96+% and holding...
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
Sleep-deprived brain here today....HoseCrusher wrote:If the mask leak rate is (figuring on the low side) 20 liters per minute, and if you exhale 1 liter of air (figuring on the high side) with each breath and breathe 15 times a minute while sleeping (figuring on the high side), you would still have a reserve of 5 liters a minute to prevent re-breathing your exhaled air.
I think mask leak rates are closer to 30 liters per minute at the pressures commonly used, that exhale volume is closer to half a liter with each breath, and the rate of breathing is closer to 10 - 12 breaths per minute while asleep.
so that means that a leak rate LOWER then the intended leak rate is just fine. Correct?
And that a leak rate considerably higher can be a problem. Correct?
And for daddy's sake...any graph that is spikey is probably not good. Correct?
(I'm tellin' ya...I have very few brain cells today....and my AHI from last night proves it!)
_________________
Mask: Swift™ FX For Her Nasal Pillow CPAP Mask with Headgear |
Additional Comments: titration 11 |
Sleep study (Aug 2010): AHI 16 (On mask AHI 0.2) <-- Now, if I could just attain that "0.2" again!
aPAP for 4 months, Switched to BiPap, 2nd sleep study Feb 2011 Possible PLMD
to quote Madalot..."I'm an enigma"
aPAP for 4 months, Switched to BiPap, 2nd sleep study Feb 2011 Possible PLMD
to quote Madalot..."I'm an enigma"
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- Joined: Tue Oct 12, 2010 6:42 pm
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
It appears that your brain cells are working much better than you think.
I will keep it short.
Correct.
Correct.
Correct.
I will keep it short.
Correct.
Correct.
Correct.
_________________
Mask: Brevida™ Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Machine is an AirSense 10 AutoSet For Her with Heated Humidifier. |
SpO2 96+% and holding...
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
jbn3boys wrote:Sleep-deprived brain here today....HoseCrusher wrote:If the mask leak rate is (figuring on the low side) 20 liters per minute, and if you exhale 1 liter of air (figuring on the high side) with each breath and breathe 15 times a minute while sleeping (figuring on the high side), you would still have a reserve of 5 liters a minute to prevent re-breathing your exhaled air.
I think mask leak rates are closer to 30 liters per minute at the pressures commonly used, that exhale volume is closer to half a liter with each breath, and the rate of breathing is closer to 10 - 12 breaths per minute while asleep.
so that means that a leak rate LOWER then the intended leak rate is just fine. Correct?
And that a leak rate considerably higher can be a problem. Correct?
And for daddy's sake...any graph that is spikey is probably not good. Correct?
(I'm tellin' ya...I have very few brain cells today....and my AHI from last night proves it!)
What are your pressure settings?
Rooster
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
DadscreepyCPAPmask,
Do you awaken anytime during the night or morning with dry mouth? Do you frequently have dry mouth during the day?
Do you awaken anytime during the night or morning with dry mouth? Do you frequently have dry mouth during the day?
Rooster
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
Yes, I awaken at night sometimes with a dry mouth. It does not bother me to much though. I have no doubt that the spiky graphs are due to a bit of mouth breathing so I may try a chin strap (any recommendations?). I received the Activa LT combo pack from Sleep Nation TV today, so I will try that one out for the next week. I will probably start with the soft gel cushion first .roster wrote:DadscreepyCPAPmask,
Do you awaken anytime during the night or morning with dry mouth? Do you frequently have dry mouth during the day?
_________________
Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: The Ultimate Chin Strap!! |
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
With my Swift FX it occasionally will because I was getting "large leaks" with the Micro, I never get any "large leaks". I truely think that I mouth breath more with the nasal pillows more than the nasal mask. Could that be possible?bdp522 wrote: The question is, does the leaking wake you or disrupt your sleep? If it does, you need to fix it.
_________________
Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: The Ultimate Chin Strap!! |
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
It is good that you will work on mouthbreathing because it can really wreck your therapy when you are using a nasal interface.
But don't be afraid of full face masks. I use two different ones and they are comfortable and leak free. Plus if I have a congestion from a cold I'm all set to breathe through my mouth and sleep well. And you know breathing well and sleeping well are more important when you are ill.
But don't be afraid of full face masks. I use two different ones and they are comfortable and leak free. Plus if I have a congestion from a cold I'm all set to breathe through my mouth and sleep well. And you know breathing well and sleeping well are more important when you are ill.
Rooster
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
I have a vision that we will figure out an easy way to ensure that children develop wide, deep, healthy and attractive jaws and then obstructive sleep apnea becomes an obscure bit of history.https://www.youtube.com/watch?v=0ycw4uaX ... re=related
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
I just checked my data from last night and with the Micro nasal mask I showed a "large leak" (9 minutes) and a spiky graph. Average total leak rate of 41%!
Is it possible that I have gotten very acustom to my titrated pressure setting after 2 months with CPAP, and maybe I need to slightly increase my pressure now? I read somewhere on this forum that sometimes mouth breathing can occur if your pressure is to low (keeping airway open)?
Is it possible that I have gotten very acustom to my titrated pressure setting after 2 months with CPAP, and maybe I need to slightly increase my pressure now? I read somewhere on this forum that sometimes mouth breathing can occur if your pressure is to low (keeping airway open)?
_________________
Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: The Ultimate Chin Strap!! |
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
Can you post your charts again? It would make it easier to comment.
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Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Severe OSA, 67 AHI Untreated, Avg 1.5 AHI Treated, Pressure 12, Avg Mask Leak 29 |
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
This was this mornings data


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Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: The Ultimate Chin Strap!! |
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Re: Total Average Leak Rate on PR System One (Spikey Graphs!
From your data it really looks like a mask leak issues, which in my personal experience are caused by either mask fit, mask stability which comes from improperly adjusted headgear or even your hair length/composition (fine, oily, etc.) or hose your hose tugging on your mask when you move around. If you haven't tried a different size cushion you might try that first, as far as moving around goes that might require a different pillow and hose tugging can be a tough one, I tried many things and finally ended up making a custom headboard that makes my hose glide around and never tug on my face in conjunction with a hose strap on my head gear. Hope something here helps. Good luck.
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Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Severe OSA, 67 AHI Untreated, Avg 1.5 AHI Treated, Pressure 12, Avg Mask Leak 29 |
Re: Total Average Leak Rate on PR System One (Spikey Graphs!
NO! You have the UNITS on the number wrong again. Sorry to fuss about this---but UNITS are important here.DadscreepyCPAPmask wrote:I just checked my data from last night and with the Micro nasal mask I showed a "large leak" (9 minutes) and a spiky graph. Average total leak rate of 41%!
The meaning of the number you cite is the average leak rate is 40.5 L/min. There is NO "average total leak rate" reported as a percent.
The graph you posted also shows that the 10.5 minutes spent in "LARGE LEAKS" makes up a total of 2.8% of the "night"---i.e. the total time the S1 was running from noon to noon on the "day" in question.
NOTE: Try as I might, I have yet to determine HOW the S1 decides when a leak is worthy of being labeled as a LARGE LEAK. I've read the documentation and gained absolutely no insight into the S1's algorithm for determining when to flag a leak as a LARGE LEAK. I've posted here and not gained any insight---just fellow posters admitting they too have no real knowledge of how the S1 determines a LARGE LEAK. But clearly, LARGE LEAKS are significant---if only because they're pretty hard to actually trigger. Me, I've never actually seen a LARGE LEAK in my S1 data even though I've seen several leaks that would definitely have been above the Red Line in ResScan---the rationale of whichis documented in the ResMed clinician's material at least.
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Machine: DreamStation BiPAP® Auto Machine |
Mask: Swift™ FX Nasal Pillow CPAP Mask with Headgear |
Additional Comments: PR System DreamStation and Humidifier. Max IPAP = 9, Min EPAP=4, Rise time setting = 3, minPS = 3, maxPS=5 |