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Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 10:12 am
by dclouse33
Hello, I am a new CPAP user and have noticed that I have been having a lot of "clear airway" events. My AHI average is around 10 while using my CPAP. I have been using it for approx. 1 month or so but not seeing too many benefits as of yet. I believe it has something to do with my settings perhaps? Can someone please help my understand my OSCAR data. Here is a snap shot from last night.
Re: Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 11:14 am
by robysue1
Can you post this data at SleepHQ?
Or alternatively, can you zoom in on the period 2:15 and 3:15 so we can see what those CAs actually look like?
Finally, can you tell us what your diagnostic sleep study said about your sleep? In particular was any said about central apneas? And did you have a formal in-lab titration study or were you just given the AutoSet and told that it would find the right pressure for you?
Re: Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 11:35 am
by Pugsy
At what altitude do you live?
Take any medications? If so, what?
Re: Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 11:38 am
by dclouse33
Pugsy wrote: ↑Sun Mar 09, 2025 11:35 am
At what altitude do you live?
Take any medications? If so, what?
I am currently at 5,300 foot elevation. I am in Denver for a contract for work. It’s interesting that you ask that.
I do not take any meds besides joint support, vitamin D and biotin.
Re: Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 11:43 am
by dclouse33
robysue1 wrote: ↑Sun Mar 09, 2025 11:14 am
Can you post this data at SleepHQ?
Or alternatively, can you zoom in on the period 2:15 and 3:15 so we can see what those CAs actually look like?
Finally, can you tell us what your diagnostic sleep study said about your sleep? In particular was any said about central apneas? And did you have a formal in-lab titration study or were you just given the AutoSet and told that it would find the right pressure for you?
Yes I will post it in sleephq. I will do this when I get back home and have access to my laptop.
My sleep study was an at home test that indicated 36.1 AHI.
I used Lofta and I’m not sure it was advanced enough to detect Central Sleep apnea. If so, it was not mentioned in my sleep study.
These are the recommendation from lofta for my Autoset.
1) Auto-CPAP set 4-20 cm H2O with heated humidity and mask/interface fitting. Close follow up and
monitoring is
recommended to adjust pressures/masks if necessary
2) Alternate treatment options including oral appliance therapy (OAT), daytime neuromuscular stimu-
lation
(ExciteOSA), poitional therapy, and/or surgical procedures for OSA may be considered based on
severity and
comorbidities, if PAP is not tolerated or in combination with PAP
Re: Help analyzing OSCAR data
Posted: Sun Mar 09, 2025 1:22 pm
by dclouse33
dclouse33 wrote: ↑Sun Mar 09, 2025 11:43 am
robysue1 wrote: ↑Sun Mar 09, 2025 11:14 am
Can you post this data at SleepHQ?
Or alternatively, can you zoom in on the period 2:15 and 3:15 so we can see what those CAs actually look like?
Finally, can you tell us what your diagnostic sleep study said about your sleep? In particular was any said about central apneas? And did you have a formal in-lab titration study or were you just given the AutoSet and told that it would find the right pressure for you?
Yes I will post it in sleephq. I will do this when I get back home and have access to my laptop.
My sleep study was an at home test that indicated 36.1 AHI.
I used Lofta and I’m not sure it was advanced enough to detect Central Sleep apnea. If so, it was not mentioned in my sleep study.
These are the recommendation from lofta for my Autoset.
1) Auto-CPAP set 4-20 cm H2O with heated humidity and mask/interface fitting. Close follow up and
monitoring is
recommended to adjust pressures/masks if necessary
2) Alternate treatment options including oral appliance therapy (OAT), daytime neuromuscular stimu-
lation
(ExciteOSA), poitional therapy, and/or surgical procedures for OSA may be considered based on
severity and
comorbidities, if PAP is not tolerated or in combination with PAP
Here, I was able to zoom in on OSCAR so you can see better. These CSA events are common on each day that I look. They appear to always happen around the same time of the night.
Re: Help analyzing OSCAR data
Posted: Mon Mar 10, 2025 7:27 am
by robysue1
dclouse33 wrote: ↑Sun Mar 09, 2025 1:22 pm
Here, I was able to zoom in on OSCAR so you can see better. These CSA events are common on each day that I look. They appear to always happen around the same time of the night.
I'd like you to zoom in and post the zoomed in
waveflow, along with the
pressure,
flow limitation, and
snoring data where you've zoomed in enough to see individual breaths.
Since the cluster of centrals starts shortly after the pressure is increased in response to a pressure increase caused by some hypopneas, I'd like you to post three screen shots of data for the waveflow, pressure data, flow limitation, and snoring data for the following zooms:
1) Zoom in between 21:00 and 21:30---the machine is flagging nothing unusual during this time frame, so I want to see it as a "control"---i.e. what does your "normal sleep
breathing" look like as compared to the stuff full of centrals.
2) Zoom in between 1:30 and 2:30---this starts shortly before the cluster starts to get bad and it includes the pressure increase and the beginning of the nasty cluster of centrals.
3) Zoom in between 3:00 and the end of that session (about 3:35)---this includes the worst part of the cluster, the cluster appearing to resolve, and what is obviously a wake-up since you turned the machine off and back on.
Pugsy asked about elevation because centrals are more common at elevation, even in people with no sleep apnea problem at lower elevation. Another good question to ask: How restless of a sleeper are you during the second half of the night? In particular, did you ever feel like you got soundly back to sleep after you turned the machine off and back on at around 3:30?
Another good question to ask: On the home sleep study, did you get a report that indicated
when the events occurred? If so, did the sleep study show a large collection of events at roughly the same time as you see the centrals in your CPAP's data?
Re: Help analyzing OSCAR data
Posted: Mon Mar 10, 2025 8:50 am
by Nocibur
Another another good question: Post the entire Overview of your therapy to examine onset, changes, and settings relationship.
Another another another good question: When did you move to Denver?
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 2:42 pm
by dclouse33
robysue1 wrote: ↑Mon Mar 10, 2025 7:27 am
dclouse33 wrote: ↑Sun Mar 09, 2025 1:22 pm
Here, I was able to zoom in on OSCAR so you can see better. These CSA events are common on each day that I look. They appear to always happen around the same time of the night.
I'd like you to zoom in and post the zoomed in
waveflow, along with the
pressure,
flow limitation, and
snoring data where you've zoomed in enough to see individual breaths.
Since the cluster of centrals starts shortly after the pressure is increased in response to a pressure increase caused by some hypopneas, I'd like you to post three screen shots of data for the waveflow, pressure data, flow limitation, and snoring data for the following zooms:
1) Zoom in between 21:00 and 21:30---the machine is flagging nothing unusual during this time frame, so I want to see it as a "control"---i.e. what does your "normal sleep
breathing" look like as compared to the stuff full of centrals.
2) Zoom in between 1:30 and 2:30---this starts shortly before the cluster starts to get bad and it includes the pressure increase and the beginning of the nasty cluster of centrals.
3) Zoom in between 3:00 and the end of that session (about 3:35)---this includes the worst part of the cluster, the cluster appearing to resolve, and what is obviously a wake-up since you turned the machine off and back on.
Pugsy asked about elevation because centrals are more common at elevation, even in people with no sleep apnea problem at lower elevation. Another good question to ask: How restless of a sleeper are you during the second half of the night? In particular, did you ever feel like you got soundly back to sleep after you turned the machine off and back on at around 3:30?
Another good question to ask: On the home sleep study, did you get a report that indicated
when the events occurred? If so, did the sleep study show a large collection of events at roughly the same time as you see the centrals in your CPAP's data?
Thank you for your detailed response. Please bare with me as I try to interpret exactly what you are asking for. I am new to OSCAR so still trying to figure it out.
I have attached all of the screenshots you have requested.
To answer your question regarding how restless of a sleeper am I during the second half of the night, I am very restless. I feel like I am awake every 15 minutes, tossing to another position in the bed to find comfort. In reality, it could be every half-hour, but it is frequent. It is normally after I have gotten up to use the restroom and return to bed. I have no problem falling back asleep, but I feel that it is not deep sleep.
And to answer your last question, my sleep study was through LOFTA which was a take home study. It did not have a detailed report that indicated when the majority of my events occurred. It details how many, but not the timing of each event. I am unsure if they happened at the ladder part of the night or not. This would be great data to compare but unfortunately It did not provide that information.
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 2:47 pm
by dclouse33
Nocibur wrote: ↑Mon Mar 10, 2025 8:50 am
Another another good question: Post the entire Overview of your therapy to examine onset, changes, and settings relationship.
Another another another good question: When did you move to Denver?
Thank you for your response and attempt at helping me!
Please see attached. This is the entire overview of my therapy since starting.
I moved to Denver at the end of January 2025. I am here until about mid-year 2025 temporarily for work.
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 5:05 pm
by Nocibur
OK need more stuff:
The home sleep study report (I believe LOFTA uses Watch-PAT and it measures pAHIc)(did you have the test in Denver or in the flatlands); and
SleepHQ for March 7 and 8 (REALLY need that).
Woulda been nice to get pre-Denver CPAP data but oh well.
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 5:13 pm
by Nocibur
Seems to me any high altitude
periodic breathing would have acclimatized by now but if you look here
- Screen Shot 2025-03-11 at 2.35.29 PM.png (489.86 KiB) Viewed 14936 times
there was
periodic breathing early in the sample but the software didn't flag it.
I mean could be TECSA too.
Or plain ol' Train Wreck Sleep Architecture (TWA).
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 6:31 pm
by dclouse33
Nocibur wrote: ↑Tue Mar 11, 2025 5:05 pm
OK need more stuff:
The home sleep study report (I believe LOFTA uses Watch-PAT and it measures pAHIc)(did you have the test in Denver or in the flatlands); and
SleepHQ for March 7 and 8 (REALLY need that).
Woulda been nice to get pre-Denver CPAP data but oh well.
Here is a screenshot. It doesn’t say pAHIc but does say pAHI without the “c”.
I had the test when I was in Denver but has long felt like I have had sleep apnea for years (10+). I have been wearing nasal strips for 6 years give or take which have helped.
pAHI is 36.1. It wouldn’t let me upload a screenshot for some reason.
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 6:34 pm
by dclouse33
Nocibur wrote: ↑Tue Mar 11, 2025 5:05 pm
OK need more stuff:
The home sleep study report (I believe LOFTA uses Watch-PAT and it measures pAHIc)(did you have the test in Denver or in the flatlands); and
SleepHQ for March 7 and 8 (REALLY need that).
Woulda been nice to get pre-Denver CPAP data but oh well.
Does SleepHQ cost?
The crazy difference between March 7 and 8th is because March 7th, I had quite a bit to drink of alcohol this night. I notice when I have a few beers, my AHI decreases.
Re: Help analyzing OSCAR data
Posted: Tue Mar 11, 2025 7:23 pm
by Pugsy
dclouse33 wrote: ↑Tue Mar 11, 2025 6:34 pm
Does SleepHQ cost?
There are 2 versions available.
There is an expanded feature version that you can pay for and there is a free version with not so much extra stuff.
The free version is really quite adequate for what we need.