Resmed S9 auto set primary/ Intellipap auto set back up.

My primary unit is the Resmed S9 Auto set. My back up unit is the Intellipap auto set. With the Resmed unit my AHI's stay below 1.0. Using the Intellipap
the last two days for the first time: day 1 was 3.0 and day 2 was 5.0. Have others had the same problem? I believe that I have read on this site that the
Intellipap gives higher reading than the Resmed. The way that I feel the last two days is exactly how I felt when I had the same readings with the S9.
Will be using it for at least a week to give me a chance to get used to it. Hopefully the AHI's will drop.
How do people use two different units? Do a lot of the people here have a different unit for a back up and experienced this at first?

I would keep my backup unit for backup and rely on my primary machine for my numbers. I don't think you can really accurately compare numbers from two different machines. I can see checking out the back up machine now and then to be sure it's working, but I wouldn't use it more than a night here and there.

Thank you for taking the time to give me an answer.
There is a man on this site that uses the Intellipap on the weekend and the Resmed during the week. I don't recall his name and I was hoping that he would be able to give me some insight as to having problems or not.

Bobby269 wrote:There is a man on this site that uses the Intellipap on the weekend and the Resmed during the week. I don't recall his name and I was hoping that he would be able to give me some insight as to having problems or not.

I think it is Slartybartfast that you are thinking of. Has one machine where he works and another machine at his home which in a different state. Did this so he didn't have to keep traveling with a single machine all the time.

Thank you that was the correct person.

Each company uses a different algorithm to calculate AHI. so it is like comparing apples to oranges. you can see more at this thread
viewtopic/t64100/viewtopic.php?f=1&t=60 ... ap#p569181

Bobby269 wrote:Thank you that was the correct person.

I answered your PM. Didn't check this thread. Sorry for the lapse.

I notice the same thing, but different machines, different companies . . . I don't worry too much about the fact that one machine reports higher AHIs than the other. Once I got my iPAP set up with the EPR = 3 and the inspiration and expiration curves both set to the maximum setting of 5 each, I can't tell the difference betwen the S9 and the Intellipap. I feel fine, wife says I don't snore, and I can't hear either machine as long as I keep a folded up T-shirt beneath them and point the air intake away from me.

For me, the difference between the two is in the software. ResScan is superb. I couldn't ask for better. And maybe the S9's more sensitive and aggressive in identifying and responding to events. However, I don't know whether those differences merit the huge price difference. So when it came time for me to buy a second machine for use in the land of the Big Drippy Trees, there was no question of which machien I'd buy. So I chose the Intellipap, and that seems to have been a good decision.

I have a BiPap for my backup machine. I used it for a few nights to verify settings, then removed the software from my computer and packed it all away. I'm glad to have a backup machine and feel lucky to have found it for the price I did. Got my AHIs below 5 and that was all I felt was necessary for my use of the backup machine. I love my Autoset, nice to know I have a backup incase something happens.

I'd bet there are settings that would get the two very similar in their scoring. Hypopneas are my nemesis - not AI's, and of course it takes both to create the AHI. You have to be careful with the IP that you don't adjust the inhalation settings to the point you're no longer getting your full Rx dosage of air. If that's the case your AHI will always be higher with the IP. Kinda' make you wonder which one is getting closer to the truth?

Emilia has an IP and is very experienced with it - she might could shed some light on it. A good DME who sells both should be a lot of help also.

Here's the bad thought for me - different machines - different algorithms - some folks may be pulling their hair out while others may be basking in good numbers with the same pressures. (???)

The companies really should test some folks who have excellent performing interfaces on each machine available and publish the results for the "sole" purpose of comparing algorithms.

I'd be surprised if the market leaders haven't done just that, but didn't report the results. Any time you get into a game with stakes that high, you'd better know before the cards are dealt what sort of hand you'll end up with. And that's not easy to do.

Sometimes those sort of studies are done for internal use only. The danger of doing such a study is that if the results don't go the way you expect them to, they ARE discoverable.

I have an Intellipap and the lowest I have ever got in a yr was 1.5. I am 100% compliant and have usually no leaks. I think Intellipap scores differently then the S9. May be I will set up a poll.

Well, I'll chime in my 2 cents worth, but I can't speak to any other machine other than the Intellipap as it is my one and only machine since I started last Aug. 29. There was a remarkably long thread a few months back where a forum member conducted his own 'study' using both an S9 and and IP. There was quite a discussion about the algorithims and company policies, etc.... I think the bottom line is simply, they are very different machines with different algorithims and will yield different results. He set up both machines with identical parameters and the results were astonishingly different. I kept thinking, with the low AHI numbers I had on my IP, that if I had an S9, my results would be negative numbers

So... I cannot complain. I've had excellent service from my IP. I did answer the new survey jmcanzo created. I posted that I have recently had a spate of under 1 AHI results with my lowest a 0.3. My overall average each month runs around 1.5 and has since I started. In the DeVilbiss publications, they consider anything under 10 good, but I know I don't feel as well even with an AHI of 2.5 or 3 (of which I've had only a few). Even with my excellent results, however, I still have daytime tiredness.....but I am not young and I had decades of OSA before Dx. I tend to think it will take a while longer to get over that.

I think both machines offer excellent therapy. For me it was price, company reputation, warranty, and discussing things with the company rep that sold me on it. I bought mine out of pocket so these things were important.

The IP is the best selling machine on our host's site.... and secondwindcpap feels it is the best auto on the market. I'd say if you are getting results under 5.0 on either machine, you are doing great!