What...?

I am not dead. I woke up feeling reasonably refreshed. What is going on here? Is this a new style of breathing? What settings did I screw up on my machine to get data like this?

Please don't play cut and paste.

Do a full screenshot.

And, what do you think is wrong?

That's typical awake breathing, and a large leak.

Sorry, I thought you might be able to focus on the data I posted and offer an idea.

I find it very interesting that you would come to the conclusion of normal awake breathing. None of my awake breathing looks anything like that.

Let me add some context...

My normal respiratory rate while awake is around 14. While sleeping it goes up a little and I will see averages in the 16 - 18 range. The plot shows the respiratory rate pegged at 50 and looking at the data it may actually be a little higher than that. 50 seems to be the upper limit of the machine.

When I went to bed my rate was about 11.

My specific question is what kind of breathing while using a CPAP machine results in a respiratory rate of 50 + ?

I counted the respiratory rate pegged at 50 about 152 times in 2:52 hours and then the pulsing of the machine woke me up. I shut the machine off, turned it back on and went back to sleep.

The second session had about 131 times in about 3:45 hours, but the time at the pegged level was much shorter. It would run up to 50, flatten out, then fall off after 5 - 10 seconds. I woke up with the machine pulsing.

The third session had about 162 times in 4:30 hours with some of those going on for an extended period of time. Once again I woke up with the machine pulsing.

Looking back over my data this behavior is specific to this night and does not occur any other night... so far.

Once again...
My specific question is what kind of breathing while using a CPAP machine results in a respiratory rate of 50 + ?

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

Sorry, I thought you might be able to focus on the data I posted and offer an idea.

Posting a fraction of the data leads to a higher prevalence of erroneous ideas.

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

I find it very interesting that you would come to the conclusion of normal awake breathing. None of my awake breathing looks anything like that.

Typical awake breathing is more sinusoidal than the rather asymmetrical sleep breathing.

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

Let me add some context...

My normal respiratory rate while awake is around 14. While sleeping it goes up a little and I will see averages in the 16 - 18 range. The plot shows the respiratory rate pegged at 50 and looking at the data it may actually be a little higher than that. 50 seems to be the upper limit of the machine.

There's no limit to the machine as far as your respiratory rate, (the chart of which you didn't supply). If you could breathe faster, the machine would follow... up to (probably) 240bpm. since the FOT cycles at 4 times a second... the machine is able to follow at least that fast.

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

When I went to bed my rate was about 11.

My specific question is what kind of breathing while using a CPAP machine results in a respiratory rate of 50 + ?

Some kinda active dream? maybe you were being chased by dragons.

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

I counted the respiratory rate pegged at 50 about 152 times in 2:52 hours and then the pulsing of the machine woke me up. I shut the machine off, turned it back on and went back to sleep.

The second session had about 131 times in about 3:45 hours, but the time at the pegged level was much shorter. It would run up to 50, flatten out, then fall off after 5 - 10 seconds. I woke up with the machine pulsing.

Unless your machine is really broken, the only 'pulsing' it does is when it does the FOT during an apnea.

HoseCrusher wrote: ↑

Sun Apr 29, 2018 4:26 pm

The third session had about 162 times in 4:30 hours with some of those going on for an extended period of time. Once again I woke up with the machine pulsing.

Looking back over my data this behavior is specific to this night and does not occur any other night... so far.

Once again...
My specific question is what kind of breathing while using a CPAP machine results in a respiratory rate of 50 + ?

You might note that your original post had nothing even vaguely related to that question in it.

I see one source of your confusion...

The graphs in the link you referenced were not put together by a technical person. They are missing the X axis scale.

Fortunately I included the X axis in my graphs.

If I had to guess the graph looking at Changing Sleep Position Waveform is roughly the same scale as the graph I am showing. The graph associated with What constitutes a bad night for me... looks like it has a compressed X axis.

I find it very interesting with the 50 limit.

This is all a mystery to me, but I will continue to research.

The first post clue was the question if this was a new style of breathing...

HoseCrusher wrote: ↑

Sun Apr 29, 2018 6:19 pm

I see one source of your confusion...

The graphs in the link you referenced were not put together by a technical person. They are missing the X axis scale.

Fortunately I included the X axis in my graphs.

If I had to guess the graph looking at Changing Sleep Position Waveform is roughly the same scale as the graph I am showing. The graph associated with What constitutes a bad night for me... looks like it has a compressed X axis.

I find it very interesting with the 50 limit.

This is all a mystery to me, but I will continue to research.

The first post clue was the question if this was a new style of breathing...

That chart's very weird looking... I have no idea why it's clipping like that, maybe a sleepyhead glitch.

OK, it appears I am the cause of the problem...

The only difference I can find is that this particular night I had selected the antibacterial filter on the menu. It appears that this selection upset the algorithm of the machine and it went a little wild on me. I am using a regular filter and not the antibacterial filter.

Over the past few nights I have not had any strange data so it looks like things are back to normal.

HoseCrusher wrote: ↑

Tue May 01, 2018 4:38 pm

OK, it appears I am the cause of the problem...

The only difference I can find is that this particular night I had selected the antibacterial filter on the menu. It appears that this selection upset the algorithm of the machine and it went a little wild on me. I am using a regular filter and not the antibacterial filter.

The AB filter introduces a significant resistance to flow, so the machine has to raise the pressure at the machine to compensate for that.

I've measured a couple CM drop across an AB filter... so the machine raises it's pressure by something similar, so you get a more accurate pressure at the mask. Thus, having "ab filter on" without a filter will give you more pressure at the mask... just like having it set for a slimline tube while using a standard tube will result in too much pressure.

I vaguely remember air pulsing when I woke up and am not sure what that was all about.

I was thinking about trying it with the AB filter selected again to see if I can duplicate the issue, but right now I am just getting used to the machine. When I feel brave I will try it again and see if I can get it to screw up again.

I can't do a respiratory rate of 50+ for minutes at a time so I am not sure what was being measured or what was going on.

Like I said, the only setting difference was the AB filter and I am not experiencing any health issues that would cause a rapid respiratory rate.