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+--- Thread: New user - AHI jumped to 3.72 from 0.37 (/Thread-New-user-AHI-jumped-to-3-72-from-0-37)
RE: New user - AHI jumped to 3.72 from 0.37 - jiguchonla - 02-07-2020
Never mind. Found a section on the changing max air pressure.
RE: New user - AHI jumped to 3.72 from 0.37 - Geer1 - 02-07-2020
Some textbook flow limitations. I'll be curious to see if some of those events go away when you use the eliminator pillow.
I am guessing Bonjour meant max pressure but should wait for him to confirm especially now that I kind of have second thoughts.
Increasing pressure is only helpful if it helps reduce apneas, flow limitations etc. I didn't think it was helping that much but after seeing the example you just shared you can see how the increasing pressure helped get the flow limited breaths back to normal breathing so it appears it did help in that situation. If you do reduce max pressure then it will probably become obvious if it is helping or not as instances like that will probably turn into hypopneas or apneas or continue to be bad flow limitations until an arousal (which will show up as big jagged breaths similar to when you are awake, to see some examples look at the times in morning just before you shut off machine).
RE: New user - AHI jumped to 3.72 from 0.37 - jiguchonla - 02-07-2020
The eliminator pillow is expected to be delivered tomorrow.
On the other hand, I would like to try reduced max pressure to see if it makes any differences.
You guys have been fantastic with helpful responses.
Have a nice weekend!
RE: New user - AHI jumped to 3.72 from 0.37 - Gideon - 02-07-2020
Yes reducing max to 12 is a radical change. It is an experiment looking to reduce pressure excursion. I do expect to further change max pressure based on the results. Yes, it could cause more significant apneic events. But it also has been a successful strategy that has worked for many. It certainly is not likely to be the end game.
RE: New user - AHI jumped to 3.72 from 0.37 - Gideon - 02-07-2020
Seeing the TV of 280 I have to ask is your ideal weight around 88 lbs (40 kg)?
RE: New user - AHI jumped to 3.72 from 0.37 - jiguchonla - 02-07-2020
I am sorry but what is the "TV of 280?"
RE: New user - AHI jumped to 3.72 from 0.37 - Gideon - 02-07-2020
TV is Tidal volume. The amount of air that passes in and out of the lungs in an ordinary breath. Medically normal is calculated as 7 ml per kg of body weight normally considered Ideal body weight. It is actually a range of 6-8 ml/kg. A low value may indicate that you are not breathing deeply enough.
RE: New user - AHI jumped to 3.72 from 0.37 - jiguchonla - 02-07-2020
Hmm. Interesting point!
Thanks for pointing it out.
Checking the TV values from other days, it was around 280-300.
It seems like my breathing is weak as I weigh around 130 lbs.
RE: New user - AHI jumped to 3.72 from 0.37 - Geer1 - 02-07-2020
You only weighing 130 lbs brings those values closer in line though and less of an issue then say my grandfather who has similar ventilation and is a fair size bigger.
Low ventilation is why I was curious to see 2 minute windows of normal respiration. My grandfathers breaths look flattened which I am sure is due to restricted breathing but when it is just flattened breaths often don't get flagged as flow limitation. Your breathing didn't look that bad in what you posted other than the couple moments of obvious flow limitation. You can look through your flow chart data and see what your breaths look like, if anything looks strange post it and we can take a look.
RE: New user - AHI jumped to 3.72 from 0.37 - jiguchonla - 02-07-2020
I will take a look at new test results tomorrow and get back to you. Thanks!