ResMed S8 AutoSet II retrieving data?

[paradiddle]

Dumb question #12 - what tape do you use for your mouth?
My leak # was high last night and I want to rule out mouth leak.

I'm just getting up to speed on S8 data logging. AHI is a combination of AI and HI? should I disregard AI and HI and just concentrate on AHI?

Hi paradiddle,

I'm sure others will weigh in with their favorite tape, but here's rested gal's links regarding that subject: viewtopic.php?t=8011. Lots and lots of information there!

Yes, AHI is a combination of AI (average apneas per hour) and HI (average hypopneas per hour). AI is really the most important part of that equation, as it's the apneas that usually do the most damage. The goal is to get AI as close to zero as possible. Because the ResMed machines tend to overscore hypopneas, an AHI under 10 may be acceptable, as long as they're mostly hypopneas. AHI under 5 would be even better.

As far as leaks go, has your mouth been dry? That's usually a sign that therapy air is escaping through your mouth or you're mouth-breathing.

~ DreamOn

wow a lot of reading on taping. I guess its not rocket science. I didn't have the dry mouth problem until this year and I agrees that it sounds like I'm mouth breathing.

Now for some data logging. I think I have some micropore tape in the cabinet.

Taping helped ( and no dry mouth) - leak was .06 ( was .48 previous night). I also used a chin strap from resmed but I need a better one because the strap needs to cradle me head.
I guess I have been mouth breathing. Maybe caused by nasal congestion and /or ? May be chin strap will retrain me.

AHI 3.6 AI .7 HI 2.9. I don't get a pressure reading?

[ozij]

Your pressure is fixed -- I assume that's why it isn't reported.

[paradiddle]

Your pressure is fixed -- I assume that's why it isn't reported.

what does that mean?

[ozij]

Your machine - you have Elite in your profile -- only uses single, pressure during the night -- the pressure you gave it in the setup - that is fixed pressure. It does not vary the pressure during therapy - so why should that pre-fixed pressure be reported in the results?

[billbolton]

It does not vary the pressure during therapy - so why should that pre-fixed pressure be reported in the results?

It does vary the pressure during therapy if EPR is used.

The pressure displayed in the daily results will vary with the degree of EPR selected.

Cheers,

Bill

[ozij]

AHI 3.6 AI .7 HI 2.9. I don't get a pressure reading?

Do you know why paradiddle doesn't get a pressure reading?

[DreamOn]

Do you know why paradiddle doesn't get a pressure reading?

ozij,

I can't really answer your question as to why, but I also have the Elite II, and when obtaining the results through the Review Menu (pressing right and left keys simultaneously) my machine has always (90+ days of use) shown "Pressure: No Data" for day, week, month, 6 mos. and year. It says the same thing if I access results via the Clinical Menu. I always check my data before noon. All the other data is there (leak, AHI, AI and HI). So I assume it's normal that it doesn't show there on the Elite II.

"Pressure" is the 95th centile value for mask-on time. I've used EPR and it still shows as No Data on the machine's LCD screen via the Review Menu. In ResScan, however, use of EPR will factor into the reported "Median Pressure". And the set pressure shows in ResScan.

I also have all features of Smart Data enabled via the Clinical Menu. I never use that, but if it's enabled it can be accessed through the Patient Menu by pressing the left arrow, then navigating to Results and then Smart Data. Interestingly, the pressure does show there. I just checked last night's results that way, and it shows my set pressure. I didn't use EPR last night, however, so I can't speak to whether that would be factored in there.

~ DreamOn

[ozij]

ozij,

I can't really answer your question as to why, but I also have the Elite II, and when obtaining the results through the Review Menu (pressing right and left keys simultaneously) my machine has always (90+ days of use) shown "Pressure: No Data" for day, week, month, 6 mos. and year. I always check my data before noon. All the other data is there (leak, AHI, AI and HI). So I assume it's normal that it doesn't show there on the Elite II.

I assume to so too, DreamOn. I had the Autoset on CPAP mode - with EPR on full time - and the same thing happened to me: "Pressure: No Data" on the Review Menu.

O.

[DreamOn]

ozij,

I can't really answer your question as to why, but I also have the Elite II, and when obtaining the results through the Review Menu (pressing right and left keys simultaneously) my machine has always (90+ days of use) shown "Pressure: No Data" for day, week, month, 6 mos. and year. I always check my data before noon. All the other data is there (leak, AHI, AI and HI). So I assume it's normal that it doesn't show there on the Elite II.

I assume to so too, DreamOn. I had the Autoset on CPAP mode - with EPR on full time - and the same thing happened to me: "Pressure: No Data" on the Review Menu.

O.

I just edited my post while you were responding. I added that I get the same result when I access Pressure through Results|Efficacy in the Clinical Menu. Yet, as I said, Pressure does show in the Patient Menu.

[paradiddle]

thanks for the responses

Just to update - I have been at .06 on leak with just a chin strap and no tape & AHI is always below 5.0

This is good data to watch for me.

[Norbel]

With the ResMed machines, if your leaks exceed 0.4 L/s, then your therapy isn't optimal. Knowing the leak rate has helped me troubleshoot a few problems. I was sleeping through air leaking from my mouth, as it was occurring when I was deeply asleep.
DreamOn

Hi There! I am so thrilled to have found your post re: the ResMed leak rate. I started treatment about four months ago and use the ResMed S8 AutoSet II with an OptiLife nasal cushion and have had leak rates as low as .21 L/S and as high as .56 L/S, most often in the range of .45 or so. I have been unable to find any information anywhere on what is an appropriate leak rate. The respiratory therapist I work with simply told me, you don't need to know any of that, it's fine. LOL May I ask where you found that info, and do you know if it makes a difference which or what type of mask is being used?

Thanks for your help!

[dtsm]

Because the ResMed machines tend to overscore hypopneas

<sigh>

No, they don't. They score differently from Respironics but they do not "overscore" anything.

an AHI under 10 may be acceptable

No, its no more or less acceptable with a Resmed that it is with any other brand.

This is just plain bad advice

Bill - can you elaborate? I'm on apap with the ResMed AutoElite II and would be interested in your comments and insights. Many thanks,

[DreamOn]

With the ResMed machines, if your leaks exceed 0.4 L/s, then your therapy isn't optimal. Knowing the leak rate has helped me troubleshoot a few problems. I was sleeping through air leaking from my mouth, as it was occurring when I was deeply asleep.
DreamOn

Hi There! I am so thrilled to have found your post re: the ResMed leak rate. I started treatment about four months ago and use the ResMed S8 AutoSet II with an OptiLife nasal cushion and have had leak rates as low as .21 L/S and as high as .56 L/S, most often in the range of .45 or so. I have been unable to find any information anywhere on what is an appropriate leak rate. The respiratory therapist I work with simply told me, you don't need to know any of that, it's fine. LOL May I ask where you found that info, and do you know if it makes a difference which or what type of mask is being used?

Thanks for your help!

I just sent you a PM, which I hope will answer your questions.