Please help me interpret my titration analysis

sintpa · Post by **sintpa** » Sat Mar 29, 2008 3:52 pm

I recently completed my 2nd sleep study. First one was a split with minimal time on CPAP. Based on the results of this study, the doc raised my pressure to 11.0. I'm having difficulty understanding why? Please help me with the results.

Thanks,
Sam

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CPAPopedia Keywords Contained In This Post (Click For Definition): CPAP

Snoredog · Post by **Snoredog** » Sat Mar 29, 2008 4:24 pm

I think you did better at 8.0 cm, at 9.0 there were too many hypopnea but then they dramatically increase at 10 then settled down as you got to 11 cm.

While we don't have EEG data (like we could read it anyway), those centrals seen may be meaningless if they were seen at the onset of sleep, 2 is nothing to be concerned about, but why didn't they continue on with 12 or 13 cm?

You do have CA shown, so be aware of it, that can be a sign of interrupted breathing and sleep, if you look at your HI count where it jumps that is what I am talking about.

But where they settled at 11, I wouldn't call that ideal either but if that is for like 4 hours that is not bad (i.e lot of data missing), pressure could have been increased chasing a snore etc. of which we don't see in that chart result.

sintpa · Post by **sintpa** » Sat Mar 29, 2008 8:02 pm

Snoredog wrote:I think you did better at 8.0 cm, at 9.0 there were too many hypopnea but then they dramatically increase at 10 then settled down as you got to 11 cm.

While we don't have EEG data (like we could read it anyway), those centrals seen may be meaningless if they were seen at the onset of sleep, 2 is nothing to be concerned about, but why didn't they continue on with 12 or 13 cm?

You do have CA shown, so be aware of it, that can be a sign of interrupted breathing and sleep, if you look at your HI count where it jumps that is what I am talking about.

But where they settled at 11, I wouldn't call that ideal either but if that is for like 4 hours that is not bad (i.e lot of data missing), pressure could have been increased chasing a snore etc. of which we don't see in that chart result.

Thanks for the interpretation. It confirms to me that the results are not crystal clear. I've been playing around with the auto setting on my M-Series. It has been consistently saying my 90% level is 11 as well. To date I've only been able to get my AHI below 5 one time.

For example, here is the chart from a few nights ago.

One thing I notice on this chart is that the flow rate is better at 11 but even here it looks like a pressure of 9 is better than 11.

Thanks again for your input. Please let me know what else you think. I can post other data if that would help.

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CPAPopedia Keywords Contained In This Post (Click For Definition): AHI, Hypopnea, auto

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CPAPopedia Keywords Contained In This Post (Click For Definition): AHI, Hypopnea, auto

Snoredog · Post by **Snoredog** » Sat Mar 29, 2008 8:50 pm

keep in mind those 2ea Central Apnea that showed up on the lab report, most likely still exist at home during sleep,

the Remstar is not smart enough to detect only 2 ea, there has to be 3 or more in a row before it decides it screwed up and counted those last 2 apnea as obstructive. where they finally show up as "NR" on the report.

So what I'm saying is any central apnea on the Encore report is going to show up as a "obstructive" apnea in the count when in reality they are central. That means a CA can drive up your AI score and become misleading.

sintpa · Post by **sintpa** » Sun Mar 30, 2008 5:05 am

Snoredog wrote:keep in mind those 2ea Central Apnea that showed up on the lab report, most likely still exist at home during sleep,

the Remstar is not smart enough to detect only 2 ea, there has to be 3 or more in a row before it decides it screwed up and counted those last 2 apnea as obstructive. where they finally show up as "NR" on the report.

So what I'm saying is any central apnea on the Encore report is going to show up as a "obstructive" apnea in the count when in reality they are central. That means a CA can drive up your AI score and become misleading.

Snoredog, I think the CA's may have been bogus readings during the sleep study. I was really having a difficult time getting comfortable and trying to fall asleep. I think my movements may have been misinterpreted. The sleep tech even mentioned that he was seeing "some funky" things on the monitor and came into the room and asked me if I was okay. I was getting really congested towards the middle of the test and felt like I couldn't breath thru the nasal mask anymore. Anyway, I'm discounting the CAs until I get a follow-up test in about 3 months. I'm having a septoplasty with coblation of turbinates combined with a Pillar procedure a week from Monday.