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ASV vs APAP?

vinhuard

Posts: 20
Threads: 3
Joined: May 2013

Machine: Resmed Aircurve 10 VAuto
Mask Type: Nasal pillows
Mask Make & Model: Resmed P10
Humidifier: Resmed HumidAir S
CPAP Pressure: P: 8-18 PS:4 Trig:Very High
CPAP Software: OSCAR

Other Comments:

Sex: Male
Location: Canada

05-29-2017, 07:37 PM

ASV vs APAP?

Hi,

I’m a bit puzzled and I would like to know if my understanding is right.

I did some reading to find the difference between an APAP machine and an ASV machine.
Is it true to say that we would all be better with an ASV machine because it can adapt the pressure for each of our breath BUT that our sleep doctors don’t prescribed them first because of the cost difference?

If someone has the money, would he benefits from getting an ASV machine? Any bad side effect i don’t understand?

Thanks!

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Sleeprider

Wiki Editor
Posts: 28,374
Threads: 88
Joined: Dec 2014

Machine: Resmed Aircurve 10 VAuto
Mask Type: Nasal pillows
Mask Make & Model: Resmed Airfit P10 and P30i
Humidifier: Resmed Climateline
CPAP Pressure: Vauto 9.6-18, PS 4.4
CPAP Software: ResScanOSCAR

Other Comments: गुरु

Sex: Male
Location: Murrysville

05-29-2017, 08:13 PM

RE: ASV vs APAP?

The primary purpose of ASV is to provide non-invasive ventilation of an individual having a central apnea. Other than that functionality, it is similar to an auto-bilevel (BiPAP/VPAP). While I think these machines are under-prescribed to those that could benefit, I would not encourage anyone without a need to get ASV. As you probably know, we can set up ASV to function as a CPAP, auto CPAP, auto bilevel and of course with a backup rate and pressure support for centrals. I don't think most people have the desire or expertise to deal with ASV, and there are no studies that would support a doctor in prescribing ASV for someone that does not need it. For the few that might pursue it on their own, I don't think there would be much, if any, harm; but why?

Sleeprider
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Gideon

Wiki Editor
Posts: 12,827
Threads: 295
Joined: Dec 2016

Machine: ResMed Aircurve 10 VAuto
Mask Type: Nasal pillows
Mask Make & Model: ResMed P10 / Amara View
Humidifier: ResMed Aircurve 10 VAuto / Resmed Climateline
CPAP Pressure: BiPAP VAuto 11-25 PS 5
CPAP Software: OSCAR

Other Comments:

Sex: Male
Location: Michigan, United States

Sleeprider

Wiki Editor
Posts: 28,374
Threads: 88
Joined: Dec 2014

Other Comments: गुरु

Sex: Male
Location: Murrysville

08-27-2018, 08:12 PM

RE: ASV vs APAP?

It can be setup with CPAP setting, but the auto-CPAP and auto bilevel are end up having limited pressure support, but the pacewave continues to trigger IPAP. Jesse Lee tried to do this and ended up going back to the Aircurve 10 Vauto. It is a different feel from the CPAP and VPAP without backup rates. In his case, he did not have any central apnea, and that is why the experiment does not really apply to your situation. In any event, I learned from JesseLee's experiment, and have not made this assertion again.

Sleeprider
Apnea Board Moderator
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____________________________________________
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sheepless

Posts: 2,573
Threads: 40
Joined: Nov 2016

Machine: resmed aircurve vauto
Mask Type: Nasal pillows
Mask Make & Model: resmed airfit p10
Humidifier: built in
CPAP Pressure: ps 5 / 8.2-13.2 vhgh trigr
CPAP Software: OSCAR

Other Comments: therapy complicated by mixed apnea & periodic limb movement; alternating between asv & vauto

Sex: Male
Location: PNW, USA

08-27-2018, 08:33 PM

RE: ASV vs APAP?

IDK if the aircurve 10 asv can be made to work like apap but the modes offered are cpap, asv and asv auto.

as often as it's been explained, I still find the naming similarities between the asv and vauto(?) to be very confusing, as are the different types or modes of the non-asv bilevel (since I haven't used those machines).

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allanri

Posts: 176
Threads: 20
Joined: May 2018

Other Comments: Cervical collar

Sex: Male
Location: Toronto

08-28-2018, 09:16 AM

RE: ASV vs APAP?

I ask because I'm trying to decide whether to pick on an ASV that I've found for a reasonable price, in the hopes that it will improve my CAs. But if it doesn't work, and it turns out I'd be better on VPAP, I'm outta luck. (I assumed that I would sell my VPAP machine if I got an ASV).

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Sleeprider

Wiki Editor
Posts: 28,374
Threads: 88
Joined: Dec 2014

Other Comments: गुरु

Sex: Male
Location: Murrysville

08-28-2018, 09:42 AM (This post was last modified: 08-28-2018, 09:44 AM by Sleeprider.)

RE: ASV vs APAP?

Allan, what I've seen is that the modes the ASV can deliver will work just fine for you. It can work as a bilevel, but you can't turn off the automatic backup rate and it won't work with less than 3 or 4 cm of pressure support. I think you can use EPAP min of 4 to 15, and PS from a minimum of zero, but you have to use a PS max of 3 or 4 cm higher than the minimum. What we know about your therapy, is that if this is a Resmed machine, you're going to use the initial settings for ASVauto mode of EPAP min 5.0, EPAP max 15, PS min 3.0, PS max 15.0 and just go from there to optimize once you are used to it. Your AHI is probably going to be near zero from the start, but there may be some residual hypopnea or if you have residual obstructive apnea, the EPAP min is going to have to go higher.

I have only known of two people that chose not to continue with ASVauto once they tried it, and one of those didn't need it. That individual traded his ASV through Supplier #2 for a Vauto. In other words, if you have a good deal, there is no risk.

Sleeprider
Apnea Board Moderator
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____________________________________________
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allanri

Posts: 176
Threads: 20
Joined: May 2018

Other Comments: Cervical collar

Sex: Male
Location: Toronto

#10

08-28-2018, 10:59 AM

RE: ASV vs APAP?

Thanks Sleeprider!

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