"please keep me updated about oximeters "
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My April Data
I'm posting my own results from April. My wife told me i was leaking out of my mouth, but i didn't realize how badly:
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Replies to This Discussion
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Permalink Reply by Mike on
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I think that I can't rely on the AHI given the high leak.
Patrick said:april pdf.pdf My numbers are not nearly as good as yours, I am using a quiatro full face Mask, so the leak rate is within 2 of what they say it should be.
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Patrick, I'm just taking a look at the pdf you attached, an excerpt of which I'm attaching as a .jpg below, and was wondering whether you're sure that your leak isn't too high. who is the "they" who said it's within 2 of where it should be?
Patrick said:april pdf.pdf
My numbers are not nearly as good as yours, I am using a quiatro full face Mask, so the leak rate is within 2 of what they say it should be.
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fyi -- if anyone wants to buy the software that Patrick and I are using to generate these reports, this post tells you how: http://www.sleepguide.com/forum/topics/software-to-read-data-off
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Permalink Reply by Daniel on
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It's hard to see any problems here. Notice that the 90th percentile leak and the average leak are very close. The general trend leak information doesn't tell me very much. You're trying to find a needle in a haystack while hovering in a helicopter 500 feet above it. To analyze mouth-breathing, you need to look at individual night detailed data.
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Here's just the detailed data for last night:
Daniel said:It's hard to see any problems here. Notice that the 90th percentile leak and the average leak are very close. The general trend leak information doesn't tell me very much. You're trying to find a needle in a haystack while hovering in a helicopter 500 feet above it. To analyze mouth-breathing, you need to look at individual night detailed data.
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That's not the detailed info. That's the long-term trend for a single night. The detailed data shows what is happening on an hour-by-hour basis
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ok, here's the rest of it:
Daniel said:That's not the detailed info. That's the long-term trend for a single night. The detailed data shows what is happening on an hour-by-hour basis
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All right - now we have some data we can dig into. For this particular night, notice that there were no spikes in the leak info, and no time in "large leak." That's all very good. At around 6 1/2 hours into the night, there is a little cluster of up/down in the leak data. From this I infer a very, very minor amount of mouth breathing - absolutely nothing to be concerned about.
According to your profile page, you are using the ResMed Activa Mask (not the Activa LT). In the user's guide for that mask, on page 9, there is a pressure/flow curve to show you the expected leak rate expressed in Liters/minute. For this particular night, average pressure is 10.1 cmH2O. According to the graph, the expected leak rate is about 33 LPM. As noted in the Quattro manual, there is a pretty big +/- range for this - about 6 LPM. Therefore, your average leak rate of 39 LPM is about what is to be expected.
In sum, the stats don't usually get much better than what I'm seeing here. I wouldn't be concerned about mouthbreathing unless dry mouth/throat are bothering you, or if the sound is disturbing your wife's sleep. Adding a chinstrap to the mix may help a tiny bit, but I would question if it is worth it given the nuisance factor of using a chinstrap.
I say relax, and Declare Victory Over Sleep Apnea!
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Patrick, can you post the detailed daily data for say, last night's data?
Patrick said:Mike,
I am looking at the user guide for the Quatro Mask..I have attached the guide in a PDF form. the flow rate curve on page 7 says I am within limits (I might be deadly wrong though) please let me know, I will check with my DME about this data later today or tomarrow.
Mike said:Patrick, I'm just taking a look at the pdf you attached, an excerpt of which I'm attaching as a .jpg below, and was wondering whether you're sure that your leak isn't too high. who is the "they" who said it's within 2 of where it should be?
Patrick said:april pdf.pdf
My numbers are not nearly as good as yours, I am using a quiatro full face Mask, so the leak rate is within 2 of what they say it should be.
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Thanks for that Daniel. I think i still need to look into a chin strap/ chin up strips because the noise of my occasional mouth leaks is bugging my wife. ever since she has been pregnant and she herself has started to use cpap, she's become quite a light sleeper. btw, i am using the Resmed Activa nasal mask, not the Swift LT.
Daniel said:All right - now we have some data we can dig into. For this particular night, notice that there were no spikes in the leak info, and no time in "large leak." That's all very good. At around 6 1/2 hours into the night, there is a little cluster of up/down in the leak data. From this I infer a very, very minor amount of mouth breathing - absolutely nothing to be concerned about.
According to your profile page, you are using the ResMed Activa Mask (not the Activa LT). In the user's guide for that mask, on page 9, there is a pressure/flow curve to show you the expected leak rate expressed in Liters/minute. For this particular night, average pressure is 10.1 cmH2O. According to the graph, the expected leak rate is about 33 LPM. As noted in the Quattro manual, there is a pretty big +/- range for this - about 6 LPM. Therefore, your average leak rate of 39 LPM is about what is to be expected.
In sum, the stats don't usually get much better than what I'm seeing here. I wouldn't be concerned about mouthbreathing unless dry mouth/throat are bothering you, or if the sound is disturbing your wife's sleep. Adding a chinstrap to the mix may help a tiny bit, but I would question if it is worth it given the nuisance factor of using a chinstrap.
I say relax, and Declare Victory Over Sleep Apnea!
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I didn't mean the Swift LT. There's a new version of the Activa. It's called the Activa LT. It gets rid of the elephant trunk, uses a dial-type adjustment for the forehead, and has a completely redesigned exhaust port that is much quieter and is less likely to blow on a bed partner.
Daniel
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hmm. i think i found my next face mask - the Activa LT. the existing Activa seemed pretty darn quiet to me, but my wife swears its noisy, so the Activa LT is worth a shot.
Daniel said:I didn't mean the Swift LT. There's a new version of the Activa. It's called the Activa LT. It gets rid of the elephant trunk, uses a dial-type adjustment for the forehead, and has a completely redesigned exhaust port that is much quieter and is less likely to blow on a bed partner.
Daniel
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