A. The whole point is to determine whether or not LL areas hide apneas. From my own records, some LL ( 20% of the total sleep time and above) do show apneas, some don’t, so we are back to square one: how can we know whether or not there are hidden apneas corresponding to the grayed out LL areas?
B. There are LL zones in the event flag graph which do not show apneas under them, yet the Flow Limit graph in Oscar ( I assume that it is the same as the Flow Rate in Sleepy Head) does show a flat bar at value 0 at the same time area of the LL.
( Are these flat bar segments, with 0 value, in the Flow Rate ( or Flow limit) breathing interruptions? If so, why then are they not recorded as apneas? May be because too short?
Actually the Flow Limit graph shows a few such flat zones at 0 not matched by a corresponding LL and/or an apnea in the event flag graph. Can these be unrecorded apneas ?
If you tell me how to attach the Oscar daily report for June 5, I’ll send it. You told me once, but I forgot.
C.Incidentally, what is the difference between the Pressure graph and the Mask pressure one?
I have been on CPAP for about a year and my AHI's are now down to about 0.50 or less, sometimes 0, mostly with 0 O.A's , only hypoapneas and sometimes unclassified apneas.
Lately I feel tired at wake up, though. I notice frequent large leaks, often above 30, sometimes up to 50 or 60 l and I wonder if my fatigue is due to O.A.'s that the machine does not record because of the large leaks. This possibility has already been raised in this Forum as well as elsewhere.
In fact, there is a post by Snuzy ( https://myapnea.org/forum/resmed-10/1#comment-18035 ) who did a search confirming that , according to him, ResMed AHI data get compromised when there are large leaks over 30% of the sleep time. I did check my large leaks pattern and I found it is often around 30% of my sleep time. I wonder if this explains my fatigue, even though this claim has been debated.
I’d like to see clear on this issue, if possible. Are there any graphs in Oscar pointing to the possibility of hidden OA’s that are not recorded directly in the event flags graph because of the large leaks issue?
Also, why doesn’t the machine display red face icons at wake up, when there have been large leaks during the night.?
Perhaps it is time I replace the silicon seal on the mask
My machine is a Resmed Air Sense 10 Autoset. I use Oscar. The OA's have all but disappeared after my doctor has adjusted the pressure range to 12-16, but can I still have unrecorded OA's because of the leaks?
I am considering to use an oximeter with my Resmed CPAP on Oscar. I know that Oscar has a tab for importing oximeter data, but I am not clear how and where to physically record the Oximeter data to import them into Oscar.
Thank you all for your comments.I might consider to buy an Oximeter, but I don't know whether all the brands are compatible with Oscar or not .
I have been on CPAP treatment for Sleep Apnea for about one year and the results have been dramatic: the AHI's went down from about 40+ per hour to about 0.50 avg, with no OA’s, mostly brief hypopneas and occasional RERAS. The results have improved even more after my doctor has recently increased the mask pressure to 12-16 H2O, with an option to increase it to 14-16 if needed.
I believe my sleep it is not yet optimal , though, as l still experience some sweating and back aches at wake up, albeit not regularly and i wonder if further increasing the mask pressure would help to further reduce hypopneas and RERAS and, generally, improve my sleep.
In fact, contrary to what I expected given the severity of my disorder, I never felt subjectively any changes or improvement in my sleep quality after starting treatment, none of those …AHA ! feelings of relief many people report after their sleep dramatically improves by undergoing treatment.
The only tangible difference is that I no longer need to wake up several times to relief the bladder. A big relief, but perhaps I still have some way to go, even though at 79 I cannot expect the same quality of sleep as when I was younger.
I know that, in the end only a doctor can make recommendations on this, but I was wondering if there are people who have noticed reduced hypoapneas or RERAs after increasing the pressure.
Usually,the machine shows green faces. The leaks appear only on the Oscar daily log as a percentage.
I had my CPAP pressure increased to 12-16 about 10 days ago. Since then, the AHI’s have been steadily falling very close to zero. Now they have been flat at 0 ( zero) for the last four days, with no OA’s and no HI’s, only a few RERA’s.
On the face of it, I am happy, but I also wonder if this is normal.
If I continue to have 0 AHI’s , does it mean that I am cured?
I am aware that in many, perhaps most cases sleep apnea is caused by the anatomy of our respiratory tract, that cannot be modified, but I also wonder if there aren’t other non-anatomical factors that can be eliminated by continued sleep therapy.
Also, last night OSCAR reported a large leak at 0.78, but the Resmed daily report, which usually warns of large mask leaks, this time does not mention anything in this regard, with a score of 98%. I wonder why.
Yes, I might as well switch back to Full time as there isn't much of a perceived difference in having the EPR set at Ramp only.
What I understand less, though is the Flow limitation issue and what it means to have the Flow limitation number doubled, along with the doubled pressure and the implications
With the EPR still off, last night was very smooth. The only thing I noticed was an unusual very low pulse at wake up. Usually it is 60 bpm because I take a betablocker following an isolated episode of atrial fibrillation almost three years ago, but this time It felt even lower.
It was also skipping a beat, although very regularly.
I don’t know if it is related to the EPR setting and the oxygenation pattern.
I don’t worry, anyway. For one thing, I am not new to arrythmias. I had a very unusual one recently, with the pulse shooting up and down between 90-130 bpm, accasionally 150 bpm, for about a week, with absolutely no symptoms.
I rushed to the emergency, but the ECG indicated a perfectly normal heart.
The doctor said I shouldn’t worry about occasional arrythmias or tachycardias as long as I have no symptoms, like chest pains, fatigue or breathing difficulties.
She said the cardio watch is not a medical instrument. It doesn’t show the complete wave pattern It only picks up the irregular beats and it averages them out in a way that can be misleading.
You can have a look at the report
Thanks, as usual.
I am sending last night’s report, after the EPR setting change. The AHI’s have slightly increased, with Hypoapnea and RERA component, no OA’s. .
Actually this time my sleep was a bit disturbed by frequent leaks throughout the night, with a persistent ( and bothering) hissing sound. Usually, I can fix this by readjusting the straps and the mask position which sometimes goes off center when I change side. Not this time.
May be the silicon seal needs to be replaced. I don’t know if the EPR new setting has something to do with this. I’ll see how it goes tonight.
Regarding traveling , I was wondering if it is safe to go without it. I wouldn't see why not, because I have traveled all my life without trhe CPAP, but may be with age my physiology has changed and it will affect me .