Highest AHI,Longest Apnea,Lowest Desat

AHI of 117 for me. I was a walking zombie before I finally went in for my sleep study and left the study with a script in my hand. With my treatment I average somewhere between 1.2 and 2.5 AHI. I feel soooooooo much better!
Mark

-SWS wrote:And despite that infrequency, I think her ASV provides her with a very necessary backup rate. Look at what happens to her respiratory drive beginning right around t=2:30 in the thread below. See BPM and trigger rate as respiratory-drive markers; note that tidal volume artificially spikes since IPAP peak maxes out:
viewtopic/t60658/viewtopic.php?f=1&t=51 ... 7&#p475035

Well, "IMHO", that event looks like a great example of the inadequacy of the original algorithm, where the Rate would default to about 9 if Auto was in full control.

NotMuffy wrote:

-SWS wrote:And despite that infrequency, I think her ASV provides her with a very necessary backup rate. Look at what happens to her respiratory drive beginning right around t=2:30 in the thread below. See BPM and trigger rate as respiratory-drive markers; note that tidal volume artificially spikes since IPAP peak maxes out:
viewtopic/t60658/viewtopic.php?f=1&t=51 ... 7&#p475035

Well, "IMHO", that event looks like a great example of the inadequacy of the original algorithm, where the Rate would default to about 9 if Auto was in full control.

Are you referring to my current machine as the "original algorithm" that is inadequate? Would the newer Advanced work better under these circumstances?

In the two and a half years I've been using the ASV, I have had three such times where it appears that I stopped breathing on my own for a period of 15 minutes or more. I didn't wake up for any of those times and would not have know if I didn't have the software.

NotMuffy, in your opinion, am I using the right machine for whatever condition I have?

Bev

NotMuffy wrote: Well, "IMHO", that event looks like a great example of the inadequacy of the original algorithm, where the Rate would default to about 9 if Auto was in full control.

And Resmed was defaulting to around 15... So what is Respironics up to now days with their auto-backup-rate algorithm? I haven't followed the relevant Respironics patents.

Big Daddy RRT,RPSGT wrote:Don't be shy!

Who has the CPAP-Talk record for the Highest AHI, Lowest Desat, Longest Apnea?

What about the highest pressure setting?

My AHI is 20 with minimal desats and 10-15 second Apneas, pressure Auto 13-20cmH2O. I know, weak.

Bet you can do better. Do you have the record?

Jumping in to play..my sleep study was Dec 17th 2010:

I had an AHI/RDI of 97 (88 CA, 116 OA, 146 Mixed apnea, 67 Hypopnea) Longest was 1.5 minutes and lowest desat was 43% spent (25% of time at less than 88% sat) My tech said she came in to tell me to roll off my back because she couldn't stand to watch me hold my breath and desat any longer.

I've had my Respironics a little over 5 weeks...started on cpap at a prescibed pressure of 9..went to auto for 10 days, returned to cpap for 10 days at 11 and am back on auto for another run. The first few days of this apap testing gave me my best results with AHI under 5 but more than 4...My CAs are still the culprits...and I have chronic nasal congestion issues. Love my Swift FX no leak issues at all. I have used saline solutions, gels, sometimes generic claritin but should I really be using those OTC drugs every night? I have my first check with the sleep dr ( neurologist) next week...will discuss it with her. In the meantime...I am happy with my therapy so far and not constantly worried about inappropriate napping...and so are the people traveling the roads with me ( although I gave up long distance driving alone more than a year ago). A road trip listening to an audio book just be my ultimate test.

I am sorry it took me 10 years to get to this point...the last 5 of them convinced I needed cpap therapy but only 9 months between finding out about nasal pillows and my decision to make an appointment.

OutaSync wrote:Are you referring to my current machine as the "original algorithm" that is inadequate? Would the newer Advanced work better under these circumstances?

Probably. The new algorithm has a "multi-layered" approach to get a little closer to each patient's baseline respiratory rate (being careful not to overshoot).

OutaSync wrote:In the two and a half years I've been using the ASV, I have had three such times where it appears that I stopped breathing on my own for a period of 15 minutes or more. I didn't wake up for any of those times and would not have know if I didn't have the software.

If your minute alveolar ventilation (tidal volume-dead space x respiratory rate) is the same pre-, post- and during the event (a drop in rate is offset by an increase in tidal volume, or however), then while that spot looks interesting, "IMHO", it's totally benign.

OutaSync wrote:am I using the right machine for whatever condition I have?

Well y'know, you did put up some good numbers on fixed CPAP back there (perhaps removing the Ambien effect and letting the CPAP equilibrate for a month or 2), but those 85 second central apneas sure scream for an ASV.

I suppose you could use a little manual back-up rate instead of Auto, but for three times a year just to make the waveform look good? If you're doing well, don't pull the bottom can out of the bean display.

So, I lose. I'm OK with that. |)

OK, here's my numbers, taken from my first polysomnogram for diagnosis on 12/23/1998:

Respiratory Event Index: 59.4 (366 events and 370 minutes sleep time)

Longest Hypopnea: 51 seconds
Longest Apnea: 59 seconds

Lowest SaO2: 65%

And actually the scariest sounding result to me: Maximum Heart Rate with Events: 300

Good news: 12 years on CPAP/APAP now and since the beginning I never had any difficulty going to and staying asleep with a machine and mask.

Bad News: Avg. Leak Rate has always shown as what seems to be high, through many masks and machines.... and I STILL don’t understand what the heck that means!!

Thanks!

Jim

PS - Forget one comment that has also baffled me over the years: The copies of test results I have show that I never had any REM sleep while being tested - ever. "Stage REM: Minutes = 0, TST% = 0"
I read somewhere that without REM sleep we die (!!!??!?!?!) Well no one ever told ME I shouldn’t be living!

NotMuffy wrote:

OutaSync wrote:In the two and a half years I've been using the ASV, I have had three such times where it appears that I stopped breathing on my own for a period of 15 minutes or more. I didn't wake up for any of those times and would not have know if I didn't have the software.

If your minute alveolar ventilation (tidal volume-dead space x respiratory rate) is the same pre-, post- and during the event (a drop in rate is offset by an increase in tidal volume, or however), then while that spot looks interesting, "IMHO", it's totally benign.

Perhaps this point may be made more clear (or not) by dissecting those parameters (tidal volume and rate) out and inverting the rate to show (in somewhat unorthodox fashion)(boy, if nobody invented parentheses, life wouldn't be worth livin") how closely this relationship is maintained:



Further (at least in this example), you did not "stop breathing" for the entire period. At worst (although the rate is slow), you were still initiating 3 out of 4 breaths.

I can probably "win" 1 or 2 of the 3.

My AHI was 171.1, the longest event was 20.5 seconds,and my O2 dropped to 67.0%

Yes, I have it bad

Pugsy wrote: 11 AHI in non REM sleep but 52 AHI in REM sleep

Pugsy, how do you interpret your data to figure out when you are in REM sleep?

Or was this at a sleep lab?

Mike6977 wrote: Pugsy wrote:11 AHI in non REM sleep but 52 AHI in REM sleep



Pugsy, how do you interpret your data to figure out when you are in REM sleep?

Or was this at a sleep lab?

This was found during the initial diagnostic sleep lab PSG.

The cpap machines can't tell us during which stage of sleep that the events are occurring. Though given my history it does explain the fact that the bulk of event clusters I might have while on cpap do appear to correlate with sleep patterns that probably indicate I am in REM staged sleep. They will start about 90 minutes after I go to sleep and get more frequent in the wee hours of the morning when we typically have more REM staged sleep.

It is not unusual to be worse in REM. Happens to a lot of people.

A reason to buy a Zeo?

My AHI for last night showed a ramp up in events just about every hour. Any way to attach a file here?

dwynne wrote:A reason to buy a Zeo?

My AHI for last night showed a ramp up in events just about every hour. Any way to attach a file here?

Buy a Zeo to see for sure if timeline maybe points to REM? For me, no need for the expense. Nothing I can do about it anyway except let the machine deal with them.
Normal sleep stages are shown here on a hypnogram. REM cycles are fairly easy to spot.
http://en.wikipedia.org/wiki/Sleep

We can't do attachments here but we can post images of our reports for comments.
This is how I do it.

Open the image to full size so it is easily read.
I use Vista snipping tool to create a screen shot and crop the image at the same time.
Prt/scr key will also take a screen shot if using XP. If laptop is used sometimes the Fn key has to be pushed at the same time as the prt/scr key
I think windows 7 Home Premium has the snipping tool, Basic may not.
Once the screen shot is created save it in jpg format.
Upload the image to a host site. I use Photobucket it is free, there are others.
Once the image is uploaded then copy the ENTIRE IMG address. Be sure to include the opening and closing IMG in brackets. Paste that copied address into a post here.
Use the preview button. If you can't see the image try again because if you can't see it we can't.

Just thought I'd update this thread with my stats. My AHI was right around 100 and my O2 sat was around 73%.

People find it hard to believe that my AHI is so high since anything over 30 is considered severe anyway.

Needless to say, I absolutely have to use CPAP every night.