Re: Inhaling much faster with VAUTO. Why?
Posted: Wed Jul 29, 2020 12:49 pm
Like this.What does a two-minute close up of the flow rate graph look like?
- Screenshot from 2020-07-29 14-48-43.png (86.11 KiB) Viewed 2015 times
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Inhaling much faster with VAUTO. Why?
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Re: Inhaling much faster with VAUTO. Why?
Posted: Tue Aug 11, 2020 3:44 am
palerider seems to be right, it must be just a difference in reporting b/w two machines. I compared flow rate graphs and they look similar
Re: Inhaling much faster with VAUTO. Why?
Posted: Tue Aug 11, 2020 7:05 am
Sometimes I get luckyLightweaver wrote: ↑Tue Aug 11, 2020 3:44 ampalerider seems to be right, it must be just a difference in reporting b/w two machines. I compared flow rate graphs and they look similar
Re: Inhaling much faster with VAUTO. Why?
Posted: Tue Aug 11, 2020 10:57 am
This is interesting to me. I switched from a ResMed Airsense 10 Autoset to a ResMed VAuto Aircurve and got very different numbers for inhalation and exhalation times, with the VAuto showing shorter inhalations and longer exhalations. I have cardioballistic artifacts in my flow rate, meaning that my heart beat telegraphs to my airway and produces small oscillations around the zero line when I'm between breaths. (See attached.)
I always assumed that the machines differed in the way they identified the beginnings and ends of inhalations and exhalations by using algorithms that treat those little oscillations differently. But Lightweaver, your flow rate doesn't show cardioballistic oscillations at all. So the difference between the algorithms for the two machines isn't what I thought it was.
I always assumed that the machines differed in the way they identified the beginnings and ends of inhalations and exhalations by using algorithms that treat those little oscillations differently. But Lightweaver, your flow rate doesn't show cardioballistic oscillations at all. So the difference between the algorithms for the two machines isn't what I thought it was.
Re: Inhaling much faster with VAUTO. Why?
Posted: Tue Aug 11, 2020 12:27 pm
You are just special.Miss Emerita wrote: ↑Tue Aug 11, 2020 10:57 amSo the difference between the algorithms for the two machines isn't what I thought it was.
I also use the VAuto and I don't have the cardiac echo thing either.
Re: Inhaling much faster with VAUTO. Why?
Posted: Tue Aug 11, 2020 12:30 pm
Re: Inhaling much faster with VAUTO. Why?
Posted: Wed Aug 12, 2020 12:28 am
The graph above isn't mine:) I do have oscillations as you describe, so this explains the difference!Miss Emerita wrote: ↑Tue Aug 11, 2020 10:57 amThis is interesting to me. I switched from a ResMed Airsense 10 Autoset to a ResMed VAuto Aircurve and got very different numbers for inhalation and exhalation times, with the VAuto showing shorter inhalations and longer exhalations. I have cardioballistic artifacts in my flow rate, meaning that my heart beat telegraphs to my airway and produces small oscillations around the zero line when I'm between breaths. (See attached.)
I always assumed that the machines differed in the way they identified the beginnings and ends of inhalations and exhalations by using algorithms that treat those little oscillations differently. But Lightweaver, your flow rate doesn't show cardioballistic oscillations at all. So the difference between the algorithms for the two machines isn't what I thought it was.
Cardioballistic artifacts on Vauto.png
- Screen Shot 2020-08-11 at 02.30.30.png (23.84 KiB) Viewed 1917 times
Re: Inhaling much faster with VAUTO. Why?
Posted: Wed Aug 12, 2020 9:47 am
Aha! So maybe after all its a cardioballistic thing!Lightweaver wrote: ↑Wed Aug 12, 2020 12:28 amMiss Emerita wrote: ↑Tue Aug 11, 2020 10:57 amThis is interesting to me. I switched from a ResMed Airsense 10 Autoset to a ResMed VAuto Aircurve and got very different numbers for inhalation and exhalation times, with the VAuto showing shorter inhalations and longer exhalations. I have cardioballistic artifacts in my flow rate, meaning that my heart beat telegraphs to my airway and produces small oscillations around the zero line when I'm between breaths. (See attached.)
I always assumed that the machines differed in the way they identified the beginnings and ends of inhalations and exhalations by using algorithms that treat those little oscillations differently. But Lightweaver, your flow rate doesn't show cardioballistic oscillations at all. So the difference between the algorithms for the two machines isn't what I thought it was.
Cardioballistic artifacts on Vauto.png
The graph above isn't mine:) I do have oscillations as you describe, so this explains the difference!