Fuzzy, #1 sounds right to me. He sleeps at 11cms because that's most comfortable for him and he has less leaks, but he probably needs 12 or 13(his titration) to do a better job on the apneas when he's supine(but not for very long) but he leaks a lot at that pressure so it became a tossup which seems to work for the most part. He rarely has large leaks and his AHI is OK. On auto he sleeps at the lower pressures most of the night too but the pressure changes disturb him when it goes up to chase leaks. His AHI is the same either way. #2 may account for his feeling really good on those days when he leaks a little more than usual. I think I have him pretty well dialed in now that he's on a newer machine than the M Series. Who says you're a madman!fuzzy96 wrote:okay 2 things come to mind
1)to me this is counter intuitive. although i have a lot of respect for slinky i disagree. a leaky seal will cause the machines output to be more but only to the point that it allows a maintenance of the pressure setting. however if the leak is too great the pressure is not maintained. it may be a case where one pressure is good for suplined sleep yet another lower pressure is neede for side sleep. the lower pressure thereby is more comfortable and still does the job. thus better sleep.Maybe he needs the little higher pressure that the higher leak rates tend to cause and that might then entail a different fitting of his mask or an adjustment to the fit???
2)as with any leak the air goes out the mask wherever possible. more airflow may be washing more co and co2 out of the mask effectively raising the 02 level.
of course this is all conjecture or as some say rants from a madman
Higher Leak, Lower AHI?
Re: Higher Leak, Lower AHI?
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| Mask: Mirage Quattro™ Full Face CPAP Mask with Headgear |
| Additional Comments: 14/8.4,PS=4, UMFF, 02@2L, |
"Do or Do Not-There Is No Try"-"Yoda"
"We are what we repeatedly do,so excellence
is not an act but a habit"-"Aristotle"
DEAR HUBBY BEGAN CPAP 9/2/08
"We are what we repeatedly do,so excellence
is not an act but a habit"-"Aristotle"
DEAR HUBBY BEGAN CPAP 9/2/08
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SleepingUgly
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- Joined: Sat Nov 28, 2009 9:32 pm
Re: Higher Leak, Lower AHI?
Tell her Aunt Sleeping Ugly wants her to watch this video:DoriC wrote:You tell her, Aunt Sleeping Ugly! That's why I'm the best Grandma in the world, I say NOTHING and give lots of HUGS!
http://www.thatvideosite.com/video/dear_16yearold_me
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| Mask: Swift™ FX For Her Nasal Pillow CPAP Mask with Headgear |
| Humidifier: S9™ Series H5i™ Heated Humidifier with Climate Control |
| Additional Comments: Rescan 3.10 |
Never put your fate entirely in the hands of someone who cares less about it than you do. --Sleeping Ugly
Re: Higher Leak, Lower AHI?
A true Grandma! I know you are loved to pieces. Of course, I agree with Auntie but would not say a word to her.DoriC wrote:That's why I'm the best Grandma in the world, I say NOTHING and give lots of HUGS!
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| Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
| Humidifier: S9™ Series H5i™ Heated Humidifier with Climate Control |
| Additional Comments: P: 6/10 |
If only the folks with sawdust for brains were as sweet and obliging and innocent as The Scarecrow! ~a friend~
Re: Higher Leak, Lower AHI?
Ive noticed somewhat of a correlation on this too. My leak ranges from 29-32. On the 29 days, my AHI can be as low as 3, while on the higher days, the AHI can be up at 5.
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| Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
| Mask: AirTouch™ F20 Full Face CPAP Mask with Headgear |