Understanding Flow Rate (ASV)
- Uncle Flapp
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- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
Had four of these episodes last night. Two lasted about 15 min; the others 6 or 7. Forgot about the oximeter last night; will try again tonight.
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Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
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Re: Understanding Flow Rate (ASV)
Looks kinda familiar.
FWIW I went back to the auto BiPAP three nights ago using the previous best prescription, and averaged less than 0.9 AHI since.
FWIW I went back to the auto BiPAP three nights ago using the previous best prescription, and averaged less than 0.9 AHI since.
_________________
Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Sleepyhead software. Just changed from PRS1 BiPAP Auto DS760TS |
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
My overall AHI was lower: 3.7. Better than the 6 I have been averaging over the last couple weeks but being exhausted last night, I slept two hours longer than normal. That extra time likely lowered the overall score. As usual, AHI consisted of almost all HYPs that occurred during those goofy episodes. Since starting ASV, my OA and CA index have remained <1 and are sometimes 0.
Very nice! I'd be there too if I can figure out these strange breathing patterns...Sleeprider wrote:FWIW I went back to the auto BiPAP three nights ago using the previous best prescription, and averaged less than 0.9 AHI since.
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
I had a thought (as dangerous as that is). For one specific episode, Morbius believed it was caused by several spontaneous arousals followed by overcompensation from the ASV. If that is true, might a sleep aid help with this problem? Think there is any validity to this theory and is it worth a shot?
- Flappy
- Flappy
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
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- Joined: Tue May 06, 2008 5:57 pm
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Re: Understanding Flow Rate (ASV)
A 40% improvement is nothing to sneeze at. Let it go another night. Sleep aids may allow you to sleep through these episodes, and would probably be approved by a doctor based on your state of exhaustion. I would still try to work through it. This is positive progress, and it might be worth seeing where it goes...one night benefit or a trend. At some point, your efforts to relieve the conditions will work in your behalf to argue for intervention, or support that you've improved things by trial and error.
Speaking of which, be prepared that this approach may include some error, but so far so good.
Speaking of which, be prepared that this approach may include some error, but so far so good.
_________________
Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Sleepyhead software. Just changed from PRS1 BiPAP Auto DS760TS |
Re: Understanding Flow Rate (ASV)
Like what?Uncle Flapp wrote:If that is true, might a sleep aid help with this problem?
Re: Understanding Flow Rate (ASV)
I dunno. Seemed clear enough to me.Sleeprider wrote:Morbius seemed to have some ideas on the breath timing before, but was too cryptic for me to understand the point.
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
If these episodes are created by multiple spontaneous arousals resulting in the machine overcompensating/forcing unnecessary breaths, would a sedative help eliminate the arousals thus prevent the cycle from even starting?Morbius wrote:Like what?Uncle Flapp wrote:If that is true, might a sleep aid help with this problem?
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
Sleeprider, I am still skeptical that the increase in EPAP is helping things but I can't argue with good results. AHI last night was 2.57 - best it has been in a while. It could be coincidence, the increase in pressure, or the fact that I have been double-lining the mask in an effort to mitigate leaks. Either way, I ain't changin' nuthin' since the numbers are where they need to be.Sleeprider wrote:A 40% improvement is nothing to sneeze at. Let it go another night...
- Flappy
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
Re: Understanding Flow Rate (ASV)
Yeah, I got that, but which specific one do you plan on using? Are you treating insomnia (SWJ, or more appropriately, WJ) or changing arousal threshold (CompSAS)?Uncle Flapp wrote:If these episodes are created by multiple spontaneous arousals resulting in the machine overcompensating/forcing unnecessary breaths, would a sedative help eliminate the arousals thus prevent the cycle from even starting?Morbius wrote:Like what?Uncle Flapp wrote:If that is true, might a sleep aid help with this problem?
Re: Understanding Flow Rate (ASV)
I think your AHI is a heckuva lot higher than 2.57 (OTOH, even if it doubled, it's still only 5.14. Everything is relative).Uncle Flapp wrote:AHI last night was 2.57...
Whatchoo calling a hypopnea? 30% flow reduction? 50% flow reduction? 3% desaturation? 4% desaturation? Resultant arousal?
The most recent submission has chain (cyclical) characteristics, as well as now being able to reveal a pattern of desaturations (although the initial event is a supersaturation, initiating the chain):
Therefore, if you have flow reduction and desatuation (known), arousal (suspected) and central apnea (the ASV Fallacy - if the machine is driving in breaths, then that means you are not breathing, and that is a central apnea, no matter what the machine is generating to make it look like it isn't), then you got events, and I figure you need to add 9 more to that segment.
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
My first thought was zolpidem.Morbius wrote:Yeah, I got that, but which specific one do you plan on using? Are you treating insomnia (SWJ, or more appropriately, WJ) or changing arousal threshold (CompSAS)?
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
- Uncle Flapp
- Posts: 247
- Joined: Thu Nov 14, 2013 2:24 pm
- Location: Arizona
Re: Understanding Flow Rate (ASV)
Sleeprider, just a quick note of thanks for your suggestions. I'm not quite there yet but the number of episodes have decreased along with the total AHI when using the slightly higher pressure. I may bump the EPAP another 1/2 point in a few days to see if they continue to decline.Sleeprider wrote:A 40% improvement is nothing to sneeze at. Let it go another night. Sleep aids may allow you to sleep through these episodes, and would probably be approved by a doctor based on your state of exhaustion. I would still try to work through it. This is positive progress, and it might be worth seeing where it goes...one night benefit or a trend. At some point, your efforts to relieve the conditions will work in your behalf to argue for intervention, or support that you've improved things by trial and error.
Speaking of which, be prepared that this approach may include some error, but so far so good.
Thanks again.
- Flappy
_________________
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Additional Comments: Dreamstation ASV. UPPP in 2007; Untreated AHI 84 |
Re: Understanding Flow Rate (ASV)
Flappy,
Do you have insomnia as well as frequent awakenings ? And CSA ?
I have Idiopathic CSA and was diagnosed 2 1/2 years ago. I am using a Respironics Bipap w/ auto SV Advanced machine. I'm still struggling to get proper sleep. One problem that I have is that if and when I do get to sleep, I wake up every 30 - 75 minutes during the night. I've been to 4 sleep neurologists and DME sleep advisor and cannot get any answers. All of the above seem to circumvent my problem as if they don't have an answer.
Does anyone have any thoughts on this situation ?
Dreamless
Do you have insomnia as well as frequent awakenings ? And CSA ?
I have Idiopathic CSA and was diagnosed 2 1/2 years ago. I am using a Respironics Bipap w/ auto SV Advanced machine. I'm still struggling to get proper sleep. One problem that I have is that if and when I do get to sleep, I wake up every 30 - 75 minutes during the night. I've been to 4 sleep neurologists and DME sleep advisor and cannot get any answers. All of the above seem to circumvent my problem as if they don't have an answer.
Does anyone have any thoughts on this situation ?
Dreamless
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Mask: Quattro™ Air Full Face Mask with Headgear |
Additional Comments: Respironics Bipap ASV Advanced |
Machine settings: Max pressure 25.0, EPAP MIN/MAX 9.0/15.0, PS MIN/MAX 6.0-15.0, BPM Auto