"Hi. No first hand experience, but you can see reviews here, which are mixed: https://www.cpap.com/productpage/resmed-airfit-f40-full-face-cpap-mask
I notice cpap.com still appear to be selling the Quattro FX. I have imported stuff from…"
Sleep Apnoea Forum Bringing Help + Support to the Patient
Pulse Oximetry
More and more of us are buying pulse oximeters, despite the fact that the majority of the sleep clinics in the UK seem to want to keep their patients in blissful ignorance of their actual sleep patterns.
However those of us who want to learn more about their sleep patterns face the problem that we are not trained in how to interpret the results given by these oximeters. My understanding from research data is that the results from pulse oximeters correlate very closely with full polysomnography. If that is right, oximeter users should be able to use their results to indicate accurately whether the pressure they are using is properly controlling their OSA.
To start this discussion I would like to pose the following questions, which are based on my own oximeter (CMS50F). Obviously there may be some other machines which give more, or better, information. If so, details here would greatly assist other users and potential users.
1. What is Basal SpO2(%) and is it significant?
2. My oximeter is pre-set with a "Desaturation Criteria Level" of 88%. What is the significance of this figure, and should I alter it up or down?
3.How low should the "Average low Sp02 %" be, before it is considered abnormal?
4. Is the "Average low Sp02 % < 88%" more, or less, important than the overall average?
5. My oximeter results show %Sp02 levels, and number of events, in bands of 5 i.e. 99-95, 94 - 90 and so on , with the number of events in each band. Should we be aiming not to go below 90 at all, or is the threshold level lower?
6. Is the time in each band significant, and if so what should we look for to show good OSA control?
7. Which overnight pulse levels are considered abnormal?
8. Can the oximeter results be converted into AHIs and if so how?
My apologies for setting out formal questions in this way, but I hope that Rock, and other members, will be able to give expert guidance on these points and others, to assist us all.
We would all benefit if we could understand :
a) the default settings to use
b) which readings indicate good OSA control
c) which readings are considered abnormal / undesirable
Views: 7315
Replies to This Discussion
-
Permalink Reply by Joe barnes on
-
This is last night.
Had alcohol and food late.
lot of events still but not as many real bad ones and feel o.k. today.As o.k as can be expected!
-
-
I realize it is just opinions and you are not doctors but I would appreciate anyone's opinion on how well my a/pap is adjusted and coping and if there is any suggestions on improving I will try them.
thank you for all your help and support.
This was last night,
same night as the oximter report just posted. Joe
- Attachments:
-
-
IncrediMail_Screenshot_0001.jpg, 107 KB -
IncrediMail_Screenshot_0002.jpg, 135 KB
-
IncrediMail_Screenshot_0003.jpg, 146 KB
-
-
-
taken same night as the oximeter report last night
- Attachments:
-
-
IncrediMail_Screenshot_0001.jpg, 107 KB
-
IncrediMail_Screenshot_0002.jpg, 135 KB
-
IncrediMail_Screenshot_0003.jpg, 146 KB
-
-
-
add ons from last report as would not except any more on that page.
-
Permalink Reply by Tigers Fan on
-
Hi Joe
What is your problem exactly? Last night you had alcohol (we don't know how much) and food late and had a mediocre night. No surprises there, then.
It is very difficult to see what is happening from one night's stats - we have to look for trends. Commit two Cardinal Sins of CPAP and your stats are not even representative!
If you post averages over four nights - no alcohol and eat earlier - we might be able to see how you are doing. Keep it simple - we need to know Pmax, Pmin, P90%. AHI for each night and averaged. Use the APAP styats as a first guide and then oximeter as a fine tune guide.
Early wild guess - your Pmin is too low and/or you use too much Flex. I suggest you reduce to 1 for the four night test.
TF (not a doctor).
-
-
Thanks for that T.F
I will do that and then what states should i show.
I put them all on as i do not know what is the important ones and what I can leave out|
Thanks joe
-
-
Hi Joe
If you just post the four numbers I've indictated for four nights, and their averages, as a table, we'll have a good starting point. You get those numbers from your charts, saves posting the charts.
TF
-
-
Thanks will do.
Joe
-
Permalink Reply by RockRpsgt on
-
A night of sleep after alcohol will be a poor reflection of a normal night's sleep.
-
-
Yes I thought that so I will not be drinking while I do this test
Joe
-
-
After 4days now changed min setting from 7 to 8 max from 14 to 15 and a flex from 3 to 1
I will note these and then post them all
when you say p min p max do you mean from where I have just altered or does it show somewhere with variations each night?
thanks joe
-
-
Hi Joe
BAsed on your last post, you have just changed Pmin from 7 to 8. Pmin is fixed unless you change it - the machine does not do so automatically. You have changed Pmax from 14 to 15.
Now, it is generally considered best to change only one parameter at a time so that you can see the efffect, if any. Change three and who knows what is causing an effect. Were it my machine, I'd leave Flex and Pmax where they are at 1 and 15. I'd do four nights at Pmin 8 and post results. Probably, then I'd do four nights with Pmin 9 and compare - but I'd wait and see the results of Pmin at 8 first.
TF
About
Sleep Apnoea Forum
New to the Sleep Apnoea Forum?
1. Stop by our Sleep Apnoea Welcome Center to introduce yourself to the SleepGuide community.
2. Start a New Topic of Conversation.
3. Post your photos - of yourself, your old CPAP machine, your new CPAP machine, your pet, something about you!
Interested in advertising, have a problem or need to contact us? Click the Report an Issue page.
Latest Activity
Resmed Airfit F20 Woes
Dear FolksI have been using the Resmed Quattro FX mask ever since I was diagnosed over 7 years ago.…See More
"Hi
All I can say is I feel your pain! I got the F20 as a replacement this year and it is very uncomfortable. I have just ordered the new Resmed F40 which is very small and light and so far it has been a lot easier to use for a mouth breather that…"
"It sounds like you're getting rainout issues (condensation) so here's an article to help with this.
www.hope2sleep.co.uk/water-in-the-mask-hose-known-as-rainout"
noisy humidifier normal?
Hello,I have an air sense 10 auto.When I have the humidifier and the heated tube plugged in it makes a sort of drumming noise. Like that at the gallows in films.Is this normal? It wakes me up and I have to give up and switch off for the night.See More
Dentists in Hull that know about Mewing ?
I was wondering if there are any dentists in Hull who know about John & Mike Mew, and changing jaw shape over time?I could add that I saw an ENT consultant recently and she said jaw shape, malocclusion, is genetic, which has become a debatable…See More
"I did replace the tank in my SleepCube, and had to regularly take the silicone sealing gasket out and give it a goof clean, but not infrequently found it standing in a pool of water in the morning. The machine sat on a tray because of…"
Nasal valve collapse
Does anyone have any experience of nasal valve collapse?Wondering if I have this but I don't know what the norm is.Been trying widgets that hold the nose open and it's like night and day.See More
"Wow it's the other way round for me.I found with the Sleepcube I'd often have a good bit of water still there in the morning. Today I woke up with a dry tank on the Resmed again and it's not on full heat or flow. I got it on 6…"
F20 AirFit small marking bridge of nose
Please help or give advice all wise people on here.I have had the Resmed F20 AirFit small mask for over a month. Seals yet…See More
"A very helpful reply Jonathan. I found the pressure setting for the full face mask to be too high when I changed to a nasal mask, but perhaps I should have persisted?
I'll try again and I'll also discuss with the clinic whether an APAP…"
"Ramble alert! My history is that I spent part of each week at a different location, so bought a second machine identical to my fixed pressure NHS machine and set it up to match using the clinician menu. This was a very long time…"
"Thanks Jonathan - I had seen the YouTube video. My question is really about the experience of people who have control of their pressure settings, for example those people who have bought their machines directly and not obtained them through an NHS…"
"This is NOT a recommendation
http://www.youtube.com/watch?v=VNUWhd2UgQM"
Air Sense 10 - changing pressure settings
I have been successfully using my air sense 10 since OSA diagnosis, and my AHI is now under 2. I had an appointment with my clinic this week and have been told there is no need for further appointments and just to contact them if I need supplies or…See More
"If you have a helpful GP, I would ask them to re-refer you to the sleep clinic."
© 2024 Created by The SleepGuide Crew.
Powered by
