CompSA, Hypoventilation, PLMs, Bradycardia and Hypotension?

[Muffy]

You've got alpha intrusion.

Muffy

[Rebecca R]

You've got alpha intrusion.

Muffy

Is alpha intrusion typically routinely indicated on most PSG analysis reports? Or is it not considered significant or perhaps easy to miss? Muffy can you show us an example of alpha intrusion?

In some of the literature I've read alpha intrusions are associated with FM.


r

[-SWS]

Well, you sure won't see ME making any comments about the 18-for-18 pressure points and the alpha wave intrusions...

No Sirree...

Seriously, though, I'm not surprised.

http://aboutmecfs.org/Conf/IACFS09Treatments.aspx
http://www.sleepreviewmag.com/issues/ar ... -07_08.asp

[Muffy]

...can you show us an example of alpha intrusion?

His SWS is just saturated with it, but right, the literature is pretty sketchy about what to do with it when you find it.

Muffy

[Muffy]

There's a lot of chaotic breathing to explain the variability on the downloads, the PLMs look nasty enough to treat, all the events appear to be central and post-arousal (pending RERA review), and I think his sleep architecture is a little worse than was scored.

Still have to download a couple more channels (I probably shoulda just spend the 7 bucks instead of having to DL one file every 15 minutes, but I'm "frugal").

Muffy

[SleepingUgly]

...can you show us an example of alpha intrusion?

His SWS is just saturated with it, but right, the literature is pretty sketchy about what to do with it when you find it.

Muffy

Which line shows the alpha intrusions? Supposedly I have had alpha intrusions on previous studies. Not sure about the last one. Interestingly, when I had the alpha intrusions, I had no pain and I was told that alpha intrusions are frequent in pain syndromes. Now I have pain, although I don't know if it's enough to disturb my sleep.

[-SWS]

Thanks once again for taking plenty of time here to both help and teach, Muffy.

SU, it's C4-A1.

[-SWS]

His SWS is just saturated with it, but right, the literature is pretty sketchy about what to do with it when you find it.

Well... that last part is almost an understatement. There is some chatter about Xyrem, however:

http://scholar.google.com/scholar?hl=en ... =&as_vis=0

http://www.google.com/search?hl=en&q=xy ... a=N&tab=sw

[Rebecca R]

...can you show us an example of alpha intrusion?

His SWS is just saturated with it, but right, the literature is pretty sketchy about what to do with it when you find it.

Muffy

Thanks. Just wanted to know what it looks like.

[kteague]

Questions for our resident gurus...

#1 Are arousals attributed to PLM's only when they coincide or immediately follow a movement?

#2 Alpha intrusions are thought to be pain related, right? Where are BB's alpha intrusions in relation to his PLM's? The reason I'm asking is I'm remembering when my movements, due to medication effect, were happening at a stage where I was aware of them though not awake. There was crescendo of a tension sensation in my legs that culminated in an explosive movement. Just wondering if the sensations prior to a limb movement could be seen as alpha intrusions.

[-SWS]

Toward question one, Kathy... This comes from an on-line training module that Mr. Google just rendered:

Scoring PLMS

An arousal and a PLM should be considered associated with each other when there is <0.5 seconds between the end of one event and the onset of the other event regardless of which is first.

So they have to be extremely close in time to be considered associated (less than half-a-second).

[SleepingUgly]

Blizzardboy, can we work out a deal that when your problems are solved, I will send you PMs with MY problems, which you will post under your name, and that way Muffy will help me, thinking he's helping you? Shhhh!

[dsm]

Blizzardboy, can we work out a deal that when your problems are solved, I will send you PMs with MY problems, which you will post under your name, and that way Muffy will help me, thinking he's helping you? Shhhh!

D

[Muffy]

Here's one of the centrals at about 21:30:



the blue line is an alpha rhythm (plain ol' close your eyes and relax alpha) so he's awake. He drifts off to sleep (green line, mixed voltage Stage 1). Central apnea starts. Sleep-onset central, normal phenomena. Do not touch, fold, jostle, harangue, bother, mutilate or in any other way harass the sleep-onset central.

Muffy

[Muffy]

Here's another sleep onset central that shows waking alpha in EEG on either side of that coarse stage 1 stuff:



This is part of "drifting" to sleep. Not an ASV-able event.

Muffy