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Flow Rate Waveforms
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AlanE Online

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Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
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CPAP Pressure: 10-14
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Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #1
Flow Rate Waveforms
I've noticed this happening since I started using the P10. It appears my breathing becomes more shallow at times. Here are some charts

My normal pattern:
[Image: sh-waveform1.PNG]

Then this shows up:
[Image: sh-waveform2.PNG]

Bigger picture:
[Image: sh-waveform3.PNG]

Full charts
[Image: screenshot-20151002-065404.png]

[Image: screenshot-20151002-065031.png]

Is this just a different stage of sleep?



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
10-02-2015 05:57 AM
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ginzo Offline

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Joined: Aug 2015

Machine: ResMed Airsense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: Res Med Airfit P-10
Humidifier: Humidair S with heated hose.
CPAP Pressure: 10.0-13.0
CPAP Software: ResScan SleepyHead

Other Comments: I'm a mouth breather!!!

Sex: Male
Location: North Port, FL

Post: #2
RE: Flow Rate Waveforms
I don't know, the pattern is different but your rate is actually higher for that time.And your AHI is great, your tidal volume is INSANE!!! If I hit 440 in tidal I'm happy, I hover around the 400 mark. My AHI has never been over 0.90, usually mid 0.20's thru 0.50 ish.

P.S. I just looked back a few weeks and I didn't see mine drop off like yours is showing in the 2300 hour. Now I'm gonna hang out and see what comes your way as far as an answer.
10-02-2015 07:52 PM
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AlanE Online

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Posts: 1,496
Joined: Mar 2015

Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
Humidifier: Built-in
CPAP Pressure: 10-14
CPAP Software: ResScan SleepyHead

Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #3
RE: Flow Rate Waveforms
So are you saying I impress the ladies with my big lungs? Laugh-a-lot



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
10-02-2015 08:01 PM
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archangle Offline
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Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
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CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #4
RE: Flow Rate Waveforms
Not sure it means much, but you might have some flow limitations. I see the big and low waveform effect myself.

Does your leak rate change when this is happening?

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
10-02-2015 08:52 PM
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AshSF Online

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Machine: PRS1 D560TS
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CPAP Software: SleepyHead

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Post: #5
RE: Flow Rate Waveforms
It could be just different sleep stages or your Body adjusting breathing amplitude and frequency according to pressure at that time OR something else.


When I went from F10 FFM to P10 with auto pressure, I had the same thing happen to my waveforms. And I was not feeling rested at all. Then, When I went to straight pressure, it became even again.

If you are feeling rested, then it's probably not worth investigating too much.

Started APAP 4-20, Closed range to 7.5-14, then straight 8.0 w/ Aflex 3
RDI always below 1. But sleep much much better at straight pressure.
Started on F10, Tried Quattro Air successfully. Finally settled on P10.
10-03-2015 10:03 AM
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archangle Offline
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Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #6
RE: Flow Rate Waveforms
(10-03-2015 10:03 AM)AshSF Wrote:  It could be just different sleep stages or your Body adjusting breathing amplitude and frequency according to pressure at that time OR something else.

Something isn't right with the long flat bottoms on this waveform. The flat bottom indicates that air is coming out at a slow, steady rate over a long period of time. When he inhales, the air comes in fairly rapidly.

It makes me think that airflow is restricted.

[Image: sh-waveform2.PNG]

I'm not sure it's terribly important, but something is going on there.

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
10-03-2015 10:35 AM
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AlanE Online

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Posts: 1,496
Joined: Mar 2015

Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
Humidifier: Built-in
CPAP Pressure: 10-14
CPAP Software: ResScan SleepyHead

Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #7
RE: Flow Rate Waveforms
(10-02-2015 08:52 PM)archangle Wrote:  Not sure it means much, but you might have some flow limitations. I see the big and low waveform effect myself.

Does your leak rate change when this is happening?

Leak rate is constant or near flat at 12 L/m.

Last night:
[Image: screenshot-20151003-130806.png]

[Image: sh_10.3.2015.PNG]



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
10-03-2015 12:15 PM
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ginzo Offline

Advisory Members

Posts: 227
Joined: Aug 2015

Machine: ResMed Airsense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: Res Med Airfit P-10
Humidifier: Humidair S with heated hose.
CPAP Pressure: 10.0-13.0
CPAP Software: ResScan SleepyHead

Other Comments: I'm a mouth breather!!!

Sex: Male
Location: North Port, FL

Post: #8
RE: Flow Rate Waveforms
I'm not sure what I was implying, but if your not a yodeler, you missed your mark!!! I'm just weezing alongUnsure

Tidal Vol (78 days)
min: 0.00
Med: 420.00
95%: 640.00
max: 2460.00

(10-02-2015 08:01 PM)AlanE Wrote:  So are you saying I impress the ladies with my big lungs? Laugh-a-lot
10-03-2015 12:31 PM
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PaytonA Online
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CPAP Software: ResScan SleepyHead

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Sex: Male
Location: Orange County,California

Post: #9
RE: Flow Rate Waveforms
(10-03-2015 10:35 AM)archangle Wrote:  
(10-03-2015 10:03 AM)AshSF Wrote:  It could be just different sleep stages or your Body adjusting breathing amplitude and frequency according to pressure at that time OR something else.

Something isn't right with the long flat bottoms on this waveform. The flat bottom indicates that air is coming out at a slow, steady rate over a long period of time. When he inhales, the air comes in fairly rapidly.

It makes me think that airflow is restricted.

[Image: sh-waveform2.PNG]

I'm not sure it's terribly important, but something is going on there.

I think the exhale pattern might just be normal for a small volume inhale. Since exhalation can merely be relaxation of the muscles used for inhaling and the rib cage and diaphragm have not moved very much, there is not as much return force like a spring that is not deflected very far.

Just my way of looking at it. May be totally wrong but it makes some sense to me.

Best Regards,

PaytonA
10-03-2015 12:47 PM
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