(05-31-2019, 12:50 PM)frankadams Wrote: I ve just got Dreamstation APAP. I just testing for few minutes and I see the same problem that remstar one: I cannt exhale even with Aflex 3 level properly. It force to inhale very soon. Thats the reason I would like to probe bipap previously but they say is expensive and complicate. Thats another story to talk about.

My post is about adjusting mask.

Regarding the section CHECK MASK ADJUSTMENT. It does not specify show how to perform the test. It happens  in 40 seconds in which I have these doubts:


1 - Do I need to breathe hard, normal, slowly or to maintain  breathing for a while? I have seen accepting values by breathing hard and with the same tightnes,s breathing slowly or making apnea and Do not accept.  
Breath, and relax,  Relaxing is more important because your facial "structure" or shape changes when it is relaxed.  The face fit feature is a brief period of elevated pressure to check mask fit.  Read the Mask Primer (link in my signature.  The most common fault is the mask is too tight, the next is that it is the wrong mask for you.

2.- Does this calibration mask test  affect the calibration of the air pressure given by the apap?
Not at the levels you have, you always want to reduce mask leaks, but all CPAP masks have intentional leaks.  PR says large leaks are twice the intentional leak.  Your numbers are really good and I wouldn't worry about the leaks you have, be aware and reduce them, but don't worry.

3.- Whats the correct number that the machine should show? the manual puts 40
Not sure what number you are talking about.

4.- At what maximum mask leakage level is the mask results acceptable? and at what level is unacceptable?
That number would vary considerably by pressure.  That is just the physics of it.  

5.- Would you tell me what reliability I will get in AHI  with leaks in the mask? The average for example of the screenshot in my previous autocpap is 26 l/min. (see photo)
As I stated above, don't worry, be aware and work on it.  The areas of the chart without major leaks are showing no more and no fewer events than those ares with the leaks.  When your numbers are good as yours are you do have more lattitude.

Without some kind of leak I cant sleep.

It´s my first post and probably my old apap was disfuntioning at that date. Soon I will post my results with the new stuff.

Thanks a lot

(05-31-2019, 01:26 PM)bonjour Wrote:

(05-31-2019, 12:50 PM)frankadams Wrote: I ve just got Dreamstation APAP. I just testing for few minutes and I see the same problem that remstar one: I cannt exhale even with Aflex 3 level properly. It force to inhale very soon. Thats the reason I would like to probe bipap previously but they say is expensive and complicate. Thats another story to talk about.

My post is about adjusting mask.

Regarding the section CHECK MASK ADJUSTMENT. It does not specify show how to perform the test. It happens  in 40 seconds in which I have these doubts:


1 - Do I need to breathe hard, normal, slowly or to maintain  breathing for a while? I have seen accepting values by breathing hard and with the same tightnes,s breathing slowly or making apnea and Do not accept.  
Breath, and relax,  Relaxing is more important because your facial "structure" or shape changes when it is relaxed.  The face fit feature is a brief period of elevated pressure to check mask fit.  Read the Mask Primer (link in my signature.  The most common fault is the mask is too tight, the next is that it is the wrong mask for you.

2.- Does this calibration mask test  affect the calibration of the air pressure given by the apap?
Not at the levels you have, you always want to reduce mask leaks, but all CPAP masks have intentional leaks.  PR says large leaks are twice the intentional leak.  Your numbers are really good and I wouldn't worry about the leaks you have, be aware and reduce them, but don't worry.

3.- Whats the correct number that the machine should show? the manual puts 40
Not sure what number you are talking about.

4.- At what maximum mask leakage level is the mask results acceptable? and at what level is unacceptable?
That number would vary considerably by pressure.  That is just the physics of it.  

5.- Would you tell me what reliability I will get in AHI  with leaks in the mask? The average for example of the screenshot in my previous autocpap is 26 l/min. (see photo)
As I stated above, don't worry, be aware and work on it.  The areas of the chart without major leaks are showing no more and no fewer events than those ares with the leaks.  When your numbers are good as yours are you do have more lattitude.

Without some kind of leak I cant sleep.

It´s my first post and probably my old apap was disfuntioning at that date. Soon I will post my results with the new stuff.

Thanks a lot

PR machines tend to anticipate or lead you rather than follow your breathing.  A number of users find this discomforting.  It is one of the reasons many of us recommend ResMed products over PR products.  We also see more issues when Flex is set at 3 so change it to 1 or 2 and see which you prefer.  A biPap machine would have the same issue.  You likely would be fine with a ResMed AirCurve 10 Vauto (BiLevel) machine much more comfortable.  I would choose this machine over the ResMed AutoSet because your Flow Limitations are a bit elevated.