I just bought an IntelliPAP2.........

Edit....I see you are using SleepyHead version 1.1....that's not fully compatible with the Devilbiss machines at all. Probably explains the huge differences.
Go get SleepyHead version 1.0 Beta and give it a go.
http://bosborne.freeshell.org/cpaptalk/sleepyhead/

williamwu1107 wrote: ↑

Wed Apr 17, 2019 11:44 am

Why do the two softwares show a large difference in the AHI value?

They shouldn't be showing such vast differences. Minor rounding up or down of numbers due to decimal placement should be the only variance.

Is the SmartLink thing just a little quick app or are you using the full blown software version?
SmartLink 3.0.7.7 can be found here....did you know about it? It was this software (or older version I guess) that Mark used to figure out how to make SleepyHead compatible with the Devilbiss machines.
http://www.respshoppe.com/software/

You have helped a lot!
The smartlink software is installed, it merges my previous sleep records; it also faithfully presents the details of the new machine's sleep event record.
I don't know what to do without you!

If you want to continue using SleepyHead....get the 1.0.0 Beta version...don't try to use the 1.1.0 version...it was never ready for public distribution or meant to be distributed for your machine at all. It's not compatible...1.0.0 version is compatible and I suspect if you use it that your AHI numbers will be very closely matched to SmartLink numbers.

I still like to use the SMARTLINK 3 software; because I am already familiar with it.
The emotional response of the new machine, I have adapted.
Thank you very much for your help.

I have always believed that it is important to maintain sleep at a comfortable pressure level.
There is a saying: The surgery was successful, but the patient died.
Increase the pressure without restriction to open the blocked airway; until you wake up and resume breathing.
This situation is very similar. Because it is also a kind of sleep disturbance, isn't it?
After doing the sleep pressure numerical titration experiment in the hospital, the doctor told me that maintaining a certain pressure range (6-9 cmH2O) is that I breathe smoothly and sleep comfortably.
I have always followed the doctor's instructions, as long as the pressure continues to exceed this range; I will review the reasons for the search. It is a cold, drinking, fatigue, obstructed airflow in the nasal passages, poor sleeping posture, too dry air, too loud and too bright in the bedroom, too much work pressure, too much exercise to cause muscle soreness, etc., etc.
Solving external problems is more effective than continuously increasing pressure. This is the long-term correct response.

Don't get lost in the pursuit of low AHI.
I can get a mask every night from going to bed and getting up in the morning; this is the point.
This is my experience in using CPAP for 10 years and I will share it with my friends.

williamwu1107 wrote: ↑

Sat Apr 20, 2019 9:17 pm

I have always believed that it is important to maintain sleep at a comfortable pressure level.
There is a saying: The surgery was successful, but the patient died.
Increase the pressure without restriction to open the blocked airway; until you wake up and resume breathing.
This situation is very similar.

On an apap machine the pressure does not increase until after you are back breathing normally and the sleep disruption has already been caused by the obstructed airway. The machine then looks at its parameters and if the apnoea was caused by an obstruction or flow limitation then the pressure is raised to try and prevent further apnoea occuring. I repeat the apap does not raise pressure to clear an apnoea

I understand what you mean and I totally agree. CPAP has been passively aware of OSA before it raises air pressure..........
I mean, don't set the upper limit of the pressure too high; you should use the pressure range obtained from the hospital sleep test as a reference. Because that is your most comfortable air pressure range. Can solve OSA, and can really sleep deeply. This is the result of the treatment we need.
In addition, when you have OSA, use the pressure you can't bear to open the obstruction of the airway, causing awakening from sleep, and then breathing normally; this treatment is not effective.
The point is to solve the cause of the abnormal increase in air pressure; instead of blindly raising the upper limit of the air pressure.
Of course, if you really need high air pressure to solve the OSA problem, the doctor should recommend using the right machine. BILEVEL PAP
Sorry, some of the content may not be easy to understand;My English is not good; I used Google to help translate.

How to modify my profile. I changed the machine and nose mask and software.
I found the cause of the difference between old and new machines; the threshold for hypoventilation is different.
The old is 50%, the new is 40%; so the new machine is easy to detect respiratory events with low respiratory flow. It will inevitably increase the CPAP air pressure to solve the problem of low respiratory flow.
After raising the threshold, it feels more comfortable to sleep all night.
I don't know if the parameters of the machine are adjusted in this way, is the treatment effect appropriate?
What is the threshold for hypoventilation breathing?
Do I need to monitor my blood oxygen concentration all night with a oximeter?
What is the normal range?
If I buy the NONIN 3150 oximeter recommended by DEVILLBISS; will it improve the CPAP respiratory event processing algorithm?

Normal 02 is mid 90's (88 being the borderline between normal and 'low'), though you don't want to be at 88-89 most of the time of course, but unless you're aware of a serious problem I don't see that you'd wear the oxi nightly, but possibly use it to check things e.g. weekly at first (if at all), monthly, etc. Many never use it at all. I'm not sure how it would improve the algorithm just by being used to check your 02 sats however.

After a period of trials, adjusting the parameters on CPAP, and comparing them over and over again, it seems that there is not much improvement on my AHI.
I borrowed an oximeter and tried to change the CPAP setting parameters and used it to record the oxygen saturation and pulse rate for two nights. The difference between the two nights is 12--9 cmH2O and 12--8 cmH2O; the HA threshold is 40% and the threshold is 50%. Because I found my Flow Limitation and RERA events to be high. After I change the HA threshold, the blood oxygen report should change.
I used SPO2 Review 1.2 to download the full night record and used Summary Report to analyze the difference between the two nights.
The report was very similar.
My question is, what have I missed? How can I interpret the data between CPAP and oximeter and improve my treatment?

Tell me if I'm reading it wrong, but it looks like your max pressure is quite low, effectively capping the machine when it might want to go higher... is there a reason for that?

I have listened to the advice and put the pressure higher.
In my experience, when I used the old model DV54D, the average pressure was 7 and the maximum pressure was less than 10. And more than 10 pressures will make me occasionally arousal.

https://drive.google.com/open?id=1SXBN2 ... _A4tbh0yJi
The above link is my report. CPAP and SPO2.
2019/03/05 CPAP setting is 12 -- 9 cmH2O ; HA threshold is 50% (less sensitive)
2019/04/05 CPAP setting is 12 -- 8 cmH2O ; HA threshold 40% (more sensitive)
There is a time difference of about a minute between the two types of reports.

It appears that the change you made was not significant enough to show a change in the data.

Both SpO2 reports look very similar and any deviations are most likely from simply data from a different night.

Let's ignore the numbers for a moment... When you wake up in the morning are you refreshed?