What is an ASV Machine ?

In what situations would the aforementioned be recommended ? I looked under CPAP definitions and it is not mentioned

Thanks in advance!

Day dreamer,

It stands for Auto Servo Ventilator ASV and its used for complex sleep apneas like centrals.. Here is a little info from cpap.com

https://www.cpap.com/productpage/pr-60- ... anced.html

Auto EPAP

Auto EPAP technology distinguishes between obstructed and clear airway apneas. Using an Auto-titrating algorithm allows the device to operate like an Auto CPAP or Auto BiPAP device and adjust when needed to maintain the airway. Auto EPAP adapts to changes in the user's needs such as a change in weight or medication.

Advanced back-up rate

Complex Sleep Apnea occurs when Central Sleep Apnea is experienced while being treated with a CPAP or BiPAP Machine for Obstructive Sleep Apnea. The Advanced Back Up Rate of the autoSV helps to prevent this by encouraging spontaneous breathing at a natural rate for the user. This is accomplished by the system automatically calculating the backup rate to closely match the natural breathing rate.

Servo ventilation (SV) algorithm

The SV algorithm provides a smoother breathing pattern. By monitoring peak flow and changing pressure as needed on a breath by breath basis it supports a proper, stable breathing cycle.

Cowboy

Thanks Cowboy!

I

The initials ASV stand for Adaptive Servo Ventilator.

In effect it is a very specialized CPAP machine that has auto-titrating (self adjusting) functions to adapt to breathing needs of the patient. What makes it different from the usual bi-level auto machines is the ability to react to and treat central apneas.

So, it is usually prescribed for those with central apnea issues.

Day_Dreamer wrote:In what situations would the aforementioned be recommended ? I looked under CPAP definitions and it is not mentioned

Thanks in advance!

Do Google searches on "BiPap Auto Servo-Ventilator" and "Adaptive Servo-Ventilation" and you will find a wealth of information.


Den

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Thanks Den I will

It must be relatively new as I see Pugsy is testing one out and there is no Icon at CPAP for it to appear in our signatures (from what I read in her signature)

Day_Dreamer wrote:It must be relatively new as I see Pugsy is testing one out and there is no Icon at CPAP for it to appear in our signatures (from what I read in her signature)

No, not a new model of machine at all. It has been around in some form or another from either ResMed or Respironics for many years.
The only reason it isn't offered in the equipment profile drop down menu is that items must have been sold by cpap.com either now or in the past and cpap.com has never sold the S9 Adapt SV.
If cpap.com doesn't sell it or hasn't sold it in the past then it won't be offered no matter what it is.

Day_Dreamer wrote:Thanks Den I will

It must be relatively new as I see Pugsy is testing one out and there is no Icon at CPAP for it to appear in our signatures (from what I read in her signature)

Depends on what you call "new". I have a provider manual for a Respironics ASV machine from 2005. Not that new.......we're just seeing more of them being in use these days.


Den

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Day_Dreamer wrote:Thanks Den I will

It must be relatively new as I see Pugsy is testing one out and there is no Icon at CPAP for it to appear in our signatures (from what I read in her signature)

she's got two listed in her profile, the auto sv from pr, and the vpap adapt from resmed.

Pugsy wrote:

Day_Dreamer wrote:It must be relatively new as I see Pugsy is testing one out and there is no Icon at CPAP for it to appear in our signatures (from what I read in her signature)

No, not a new model of machine at all. It has been around in some form or another from either ResMed or Respironics for many years.
The only reason it isn't offered in the equipment profile drop down menu is that items must have been sold by cpap.com either now or in the past and cpap.com has never sold the S9 Adapt SV.
If cpap.com doesn't sell it or hasn't sold it in the past then it won't be offered no matter what it is.

Thanks Brenda!

So why the change? How are the results?

palerider wrote:she's got two listed in her profile, the auto sv from pr, and the vpap adapt from resmed.

No. I am using only 1 ASV machine which is the S9 Adapt SV.
The PR System One BiPap is the 760 model and is NOT ASV machine. The PR S1 BiPap that is ASV would be model 950/960.
Not all BiPaps/VPAPs are ASV capable.

BiPap is Respironics trademark name for bilevel pressure machine.
VPAP is the ResMed trademark name for bilevel pressure machines.

Not all bilevel machines do the ASV thing. Some are just "plain" bilevel machines that have pressure support available to make it easier to exhale with higher pressures and also bilevel machines will go to 25 cm if needed where as cpap/apap machines only go to 20 cm.

Day_Dreamer wrote:So why the change? How are the results?

Curiosity.
Some people who don't have problems with centrals (I don't either) were talking about how nice it was and I got a chance to buy a used one and I like to experiment...so I got it.
I love it. Got lucky in that I don't have any issues with the rather rapid pressure changes and I sleep quite well with it and feel decent and it's doubtful that I will have any need or want to go back to the BiPap 760.
Kinda spoiled now.

Pugsy wrote:

Day_Dreamer wrote:So why the change? How are the results?

Curiosity.
Some people who don't have problems with centrals (I don't either) were talking about how nice it was and I got a chance to buy a used one and I like to experiment...so I got it.
I love it. Got lucky in that I don't have any issues with the rather rapid pressure changes and I sleep quite well with it and feel decent and it's doubtful that I will have any need or want to go back to the BiPap 760.
Kinda spoiled now.

Now I want one

In order to get one with insurance, you need to have problems that are untreated by cpap or bipap. They are expensive buggers and insurance companies, for good reason, don't want to pay for them if they are not needed. Usually that would mean having central apneas or issues with breath rate and/or breath volume.

Some people think that since they are the most advanced machine available, they are to be desired and want to have them. But that isn't necessarily the case. For most people cpap/apap or bipap work fine. For some people, like Pugsy, they work well. For others, they do not. Some of us don't like a machine trying to control the timing and volume of every breath we take. I HAVE to have one, and it's a royal pain in the butt. My normal breath rate is 6 breaths per minute, and the ASV thinks that I am in danger at that rate and constantly attempting to speed me up. So I am trying to exhale while it is trying to stimulate an inhalation by zooming up the pressure. It cuts off the inhalation pressure while I am still inhaling. I have to use it because of the centrals, but the machine is not built to accommodate someone with my breath rate.

If you can find one cheap and want to try it, go for it, but be sure to get advice on how to set all of the parameters.