Can anyone here help me to understand my Sleep Study printouts?
- JB
Just a brief post to ask for some technical help
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ahujudybear
- Posts: 354
- Joined: Mon May 23, 2005 10:12 am
- Location: Franklin, WI
Just a brief post to ask for some technical help
Last edited by ahujudybear on Sat Jun 18, 2005 7:39 pm, edited 1 time in total.
Morning, -JB,
The following post, explaining someone elses results, can't be outdone....
http://www.talkaboutsleep.com/message-b ... 5245#75245
If you still have questions after you've read that, try posting the specifict data.
O.
The following post, explaining someone elses results, can't be outdone....
http://www.talkaboutsleep.com/message-b ... 5245#75245
If you still have questions after you've read that, try posting the specifict data.
O.
_________________
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Good advice is compromised by missing data
Forum member Dog Slobber Nov. 2023
Antoine de Saint-Exupery
Good advice is compromised by missing data
Forum member Dog Slobber Nov. 2023
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ahujudybear
- Posts: 354
- Joined: Mon May 23, 2005 10:12 am
- Location: Franklin, WI
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ahujudybear
- Posts: 354
- Joined: Mon May 23, 2005 10:12 am
- Location: Franklin, WI
OK. I'm beginning to figure this out. on the graph line labeled CPAP, they show something (don't know what it represents) at levels 4, 6, 8, 10 & 12, but I don't know what it is they are measuring. Obviously (?) they are measuring it at the EPAP settings because on the next page is a chart showing the number of events at different pressure settings. But the numbers on the graph don't match those on the chart. The chart lists settings of 10/2, 12/4, 12/6, 14/8 and 16/10.
Also on the chart, some of the spaces (all of the spaces for 10/2 and for 16/10) have dashes ( - ) in them, while all of the other spaces have numbers or zeros. But even that first line with all the dashes has a total at the end of 6.9 for the RAI. The summary gives the RAI as 5.3. OK, Lets do one at a time:
CPAP Summary Table:
At pressure 10/2:
TST 43.5, REM 0,
NREM 43.5,
Sleep Effic. 83.7%,
dashes----,
RAI 6.9
At pressure 12/4:
TST 43,
REM 0,
NREM 43,
Sleep Effic. 50.3,
Obstr Ap 0,
Central Ap 1,
Total Events 1,
RDI 1.4,
RAI 7.0
At pressure 12/6:
TST 84,
REM 8,
NREM 76,
Sleep Effic. 62.2%,
Total Events 0,
RDI 0,
RAI 2.9,
Lowest desat 90.8
At pressure 14/8:
32 minutes,
no REM,
Sleep Efficiency 48.1%,
Central Ap. 1,
Hypop 1,
RDI 3.8,
RAI 7.5,
Lowest Desat 92.8
At pressure 16/10:
1 minute,
no REM,
Sleep Effic. 4.5%
[Note: and I woke up with what felt like a CO2 headache]
On the Statistics page, they list 17 arousals due to snoring (including 3 while I was supposedly sleeping on my stomach - which I never do. Hurts too much. This was right at the beginning of the study when I was on my left side.) I'm wondering where that statistic is measured? Several times during the night I was talking with the technician and once I woke up because my cheek (right one) was fluttering because I was breathing out through my mouth. Wonder if those were some of the vibrations listed as "snoring"?
Anyway, this whole test is a washout because the AutoPAP was not sensitive enough for me to use and kept waking me up with it all-or-nothing transitions fro IPAP to EPAP or not responding at all when I would try to take a breath. I also have moderate RLS/PLM (PLM s in earlier study of 96 total for the night, 83 causing arousals. (This was not measured during the second study. The wires on my legs gave me flashbacks to when I had polio & had to have the IV's in my feet. Guess I must have been cathetarized too?? But what a shock that was!)
Question: How many of the lines on the graph are markers and how many are events?
Like on the first test, there are 5 places where my O2 sat level drops to 50% - including 3 times while they were giving me Oxygen. In fact, even though they wer giving me I think .5 litres of O2, my sat level dropped to below 90% near the end of the study. But they say that my lowest sat was 85%. (It was dropping and probably would have gone lower, but they decided to give me supplementary O2 at this point.) Those 50% places do not line up with any of the apneas or hypopneas. Maybe they were times when the monitor slipped out of place?
On that (January) study, the graph for limb movements and arousals looks like a bar code! There are 50 tick marks on the line that indicates snoring, some of them longer than others, but the statistics only lists 14 arousals from snoring.
Is there a way to send you an attachment? I have scanned the graphs (they are very hard to describe). I could scan the stats page too?
Another question: Why would they give a statistic for Arousals while you're awake? I actually had 5 of these, one from snoring and one "spontaneous" (what does that mean??) The chart for Arousals lists the Total each for Snore, Spont., Limb, Desats, and A+ H; Then those during Non-REM, those during REM, and those during "Wake".
At any rate, bottom line, my sleep efficiency without BiPAP was 48.3% and with their machine 56.4%.
Thanks again for any help you can give me.
- JB
Also on the chart, some of the spaces (all of the spaces for 10/2 and for 16/10) have dashes ( - ) in them, while all of the other spaces have numbers or zeros. But even that first line with all the dashes has a total at the end of 6.9 for the RAI. The summary gives the RAI as 5.3. OK, Lets do one at a time:
CPAP Summary Table:
At pressure 10/2:
TST 43.5, REM 0,
NREM 43.5,
Sleep Effic. 83.7%,
dashes----,
RAI 6.9
At pressure 12/4:
TST 43,
REM 0,
NREM 43,
Sleep Effic. 50.3,
Obstr Ap 0,
Central Ap 1,
Total Events 1,
RDI 1.4,
RAI 7.0
At pressure 12/6:
TST 84,
REM 8,
NREM 76,
Sleep Effic. 62.2%,
Total Events 0,
RDI 0,
RAI 2.9,
Lowest desat 90.8
At pressure 14/8:
32 minutes,
no REM,
Sleep Efficiency 48.1%,
Central Ap. 1,
Hypop 1,
RDI 3.8,
RAI 7.5,
Lowest Desat 92.8
At pressure 16/10:
1 minute,
no REM,
Sleep Effic. 4.5%
[Note: and I woke up with what felt like a CO2 headache]
On the Statistics page, they list 17 arousals due to snoring (including 3 while I was supposedly sleeping on my stomach - which I never do. Hurts too much. This was right at the beginning of the study when I was on my left side.) I'm wondering where that statistic is measured? Several times during the night I was talking with the technician and once I woke up because my cheek (right one) was fluttering because I was breathing out through my mouth. Wonder if those were some of the vibrations listed as "snoring"?
Anyway, this whole test is a washout because the AutoPAP was not sensitive enough for me to use and kept waking me up with it all-or-nothing transitions fro IPAP to EPAP or not responding at all when I would try to take a breath. I also have moderate RLS/PLM (PLM s in earlier study of 96 total for the night, 83 causing arousals. (This was not measured during the second study. The wires on my legs gave me flashbacks to when I had polio & had to have the IV's in my feet. Guess I must have been cathetarized too?? But what a shock that was!)
Question: How many of the lines on the graph are markers and how many are events?
Like on the first test, there are 5 places where my O2 sat level drops to 50% - including 3 times while they were giving me Oxygen. In fact, even though they wer giving me I think .5 litres of O2, my sat level dropped to below 90% near the end of the study. But they say that my lowest sat was 85%. (It was dropping and probably would have gone lower, but they decided to give me supplementary O2 at this point.) Those 50% places do not line up with any of the apneas or hypopneas. Maybe they were times when the monitor slipped out of place?
On that (January) study, the graph for limb movements and arousals looks like a bar code! There are 50 tick marks on the line that indicates snoring, some of them longer than others, but the statistics only lists 14 arousals from snoring.
Is there a way to send you an attachment? I have scanned the graphs (they are very hard to describe). I could scan the stats page too?
Another question: Why would they give a statistic for Arousals while you're awake? I actually had 5 of these, one from snoring and one "spontaneous" (what does that mean??) The chart for Arousals lists the Total each for Snore, Spont., Limb, Desats, and A+ H; Then those during Non-REM, those during REM, and those during "Wake".
At any rate, bottom line, my sleep efficiency without BiPAP was 48.3% and with their machine 56.4%.
Thanks again for any help you can give me.
- JB
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rested gal
- Posts: 12880
- Joined: Thu Sep 09, 2004 10:14 pm
- Location: Tennessee
Judy, I can't help at all interpreting the test stuff, but I did wonder if you made a typo there... they were titrating you with a bi-level machine (not an autopap) weren't they? Autopaps don't have specific separate IPAP/EPAP pressure settings like bi-level (BiPAP, VPAP III, Knightstar 330, GoodKnight 425, etc.) machines do.the AutoPAP was not sensitive enough for me to use and kept waking me up with it all-or-nothing transitions fro IPAP to EPAP or not responding at all when I would try to take a breath.
Has to be frustrating for you, I'm sure! Hope you and your RT are able to get comfortable settings figured out for effective treatment.
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ahujudybear
- Posts: 354
- Joined: Mon May 23, 2005 10:12 am
- Location: Franklin, WI
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