What is it?

[DeeCPAP]

I noticed on SleepyHead that after 3 hours of sleep or so, the graph shows about an hypopnea that reaches about 1.1 on the graph lasting for about an hour, then 30 minutes or so later reaching the same level for another hour, then another hypopnea that lasts about an hour that reaches about 4 on the graph. Sometimes there's a fourth hypopnea similar to the first. The total leakage over the red like is about 5%. Total time in apnea about 1.5

There's always long periods of time with long apneas, one lasted for 3 hours. It does *not* always correspond to the leak rate.

Does this make sense to anyone? Is it insignificant?

Here's the link. Just click it to enlarge.

https://ibb.co/album/hqeK1F

Thanks

[Pugsy]

Have no idea what you are seeing. Need the pictures.
Have no idea what you mean when you talk about reaching 1.1 or 4.0 unless you are talking about the scale numbers.

[DeeCPAP]

Have no idea what you are seeing. Need the pictures.
Have no idea what you mean when you talk about reaching 1.1 or 4.0 unless you are talking about the scale numbers.

Yes, those are the scale numbers. Here's the link. Just click it to enlarge.

https://ibb.co/album/hqeK1F

Thanks

[Pugsy]

Are you talking about the AHI graph?
That's the only thing I see going to 4.
That isn't an individual hyponea lasting an hour....the AHI graph is just an hour number of how many events happened within a 60 minute period and the period starts over every 60 minutes.
It's a pretty meaningless graph and I have mine turned off because all it gives is an hourly index.
All that one tells me is that you had around 4 events during the 60 minutes from roughly 10:00 to 11:00.
Has nothing at all to do with duration of each event. Duration is seen on the events tab.

[DeeCPAP]

I noticed on SleepyHead that after 3 hours of sleep or so, the graph shows about an hypopnea that reaches about 1.1 on the graph lasting for about an hour, then 30 minutes or so later reaching the same level for another hour, then another hypopnea that lasts about an hour that reaches about 4 on the graph. Sometimes there's a fourth hypopnea similar to the first. The total leakage over the red like is about 5%. Total time in apnea about 1.5

Does this make sense to anyone? Is it something to ignore? I can post a link, but right now I'm in the middle of moving so have no time.

Thanks

=======================
cant see the graph to tell
post the data pics with imgur

Here's the link again: https://ibb.co/n5GSpv

it sounds like if you have long term hypopneas that the pressure is not high enough to fix it

Thanks. I've noted this occurs *only* after I sleep for 3 or 4 hours, THEN it happens, not before. The reason I'm concerned is that in a previous sleep study it mentioned bradycardia -- slow heartbeat. AHI measures breathing rate, too. If my heart slows, my breathing would slow, too, maybe?

[DeeCPAP]

Have no idea what you are seeing. Need the pictures.
Have no idea what you mean when you talk about reaching 1.1 or 4.0 unless you are talking about the scale numbers.

Here's the link again.

https://ibb.co/n5GSpv

[DeeCPAP]

Are you talking about the AHI graph?
That's the only thing I see going to 4.
That isn't an individual hyponea lasting an hour....the AHI graph is just an hour number of how many events happened within a 60 minute period and the period starts over every 60 minutes.
It's a pretty meaningless graph and I have mine turned off because all it gives is an hourly index.
All that one tells me is that you had around 4 events during the 60 minutes from roughly 10:00 to 11:00.
Has nothing at all to do with duration of each event. Duration is seen on the events tab.

So it has nothing to do with breathing rate or hypopneas? Why does it only happen after 3 or 4 hours of sleeping? (Glad you said it means nothing.)

[DeeCPAP]

Have no idea what you are seeing. Need the pictures.
Have no idea what you mean when you talk about reaching 1.1 or 4.0 unless you are talking about the scale numbers.

https://ibb.co/n5GSpv

[DeeCPAP]

Have no idea what you are seeing. Need the pictures.
Have no idea what you mean when you talk about reaching 1.1 or 4.0 unless you are talking about the scale numbers.

Yes, those are the scale numbers. Here's the link. Just click it to enlarge.

https://ibb.co/album/hqeK1F

Thanks

======

your AHI is good

there are a lot of large leaks
but your pressure does not max out



there are NO hypops
you have some obstructive apnea
CA are likely transitional and not an issue

where do you think you see hypops ?

Those hypopneas that last about an hour (see the AHI rate on the graph lasting for an hour or so) don't always correspond to leak. As I mentioned in a previous message, I was diagnosed with bradycardia in a sleep study a long time ago (I just happened to find the study). Now I'm wondering if this is an indicator since the AHI measures breathing as well as the hypopneas (I think, not sure.

[Pugsy]

Why does it only happen after 3 or 4 hours of sleeping?

Either you are in REM sleep or you rolled over onto your back and a handful of hyponeas or OAs happened.
4 over a period of an hour isn't really that big of a deal. With the timing of the cluster I see on the events graph around 10ish....I suspect REM but it could be supine sleeping. Your OSA worsened only slightly during that time and the pressure couldn't quite prevent those events from happening. If I saw this often during a night or really dense clusters (a lot more than 4 over an hour) then a little more pressure might be indicated but with your report I wouldn't worry about it.

Looks like you accidentally turned off the OA flagging on the events graph. Look down at the lower left corner of the graphs where you see the "Flag" thing with a little arrow...click on the arrow and then if you see anything that is red (probably the Obstructive Apnea flag) click on it so it turns green and then the OA will show up on the Events graph. Right now I see CA and hyponea but OA in the middle is blank.

Here's mine from Aug 1. You can see where it goes to 3 during the first very small cluster and then to 1 or 2 three times later in the night.
My OSA is documented worse in REM sleep and the first cluster coincides with the time frame that I would normally be in REM sleep and the other 2 clusters coincide with later REM. I am reasonably certain that those are REM related. Because they are relatively sparse and rare I choose to ignore them. I could try to kill them with more pressure but I don't see the need. I am sleeping well and feeling decent (for me anyway) and those tiny little groups of events aren't really harming anything. The very last one right before I turned my machine off is also very likely REM related.
I had a grand total of 7 events over the entire night of 8 hours of sleep. I don't even take a second glance at things until I see AHI number pushing 4.0.
AHI less than 1.0....I nearly break my arm patting myself on the back.

If you google sleep stages and look at the normal hypnograms you can see when REM normally occurs with the first REM being approx 90 minutes after sleep onset and then as the night goes on REM comes on more frequently and lasts longer.

As you can see the AHI graph tends to make things look a lot worse than they are.

[Pugsy]

The graph is an AHI graph ....has nothing to do with heart rate or breathing other than it's how many times within an hour something happened...either a hyponea or an OA or even a central. They all get included in that one hour peak graph.
Has nothing at all to do with any sort of event duration.

[kteague]

Was your bradycardia during sleep only, and what follow-up did you have? Ever worn a holter monitor? You could ask your doctor to order an overnight home monitoring of your pulse to set your mind at ease. Some buy their own recording pulse oximeter. Personal opinion is I wouldn't make that investment without being pretty sure I really needed it. I bought one early in my treatment and it's still in a closet somewhere - a $250 space taker. Pugsy's explanation of the graph is comforting in that it doesn't mean there was reduced airflow for that duration.

[DeeCPAP]

The graph is an AHI graph ....has nothing to do with heart rate or breathing other than it's how many times within an hour something happened...either a hyponea or an OA or even a central. They all get included in that one hour peak graph.
Has nothing at all to do with any sort of event duration.

Thanks, Pugsy. MUCH appreciated, as usual.

[DeeCPAP]

Was your bradycardia during sleep only, and what follow-up did you have? Ever worn a holter monitor? You could ask your doctor to order an overnight home monitoring of your pulse to set your mind at ease. Some buy their own recording pulse oximeter. Personal opinion is I wouldn't make that investment without being pretty sure I really needed it. I bought one early in my treatment and it's still in a closet somewhere - a $250 space taker. Pugsy's explanation of the graph is comforting in that it doesn't mean there was reduced airflow for that duration.

I recently found my old sleep study. It say tachycardia AND bradycardia. I gave a copy to to my GP's secretary (he's new, but he was out of town at the time) and told him I thought it came from the medication I was using at the time, XYREM. He didn't respond so I assumed everything was okay.

[DeeCPAP]

As usual, I'm very thankful for the help I've gotten here. You guys are great!!!


THANK YOU !!!!