(11-16-2019, 12:05 PM)WillSleep Wrote:

(11-16-2019, 10:37 AM)WildSteelhead Wrote: 4.  It seemed like when I was awake and trying to doze off and breathing normally, the machine was mostly breathing in rhythm with me, which was comfortable.  However, then it would kick up in some pressure AND have a longer respiration rhythm than I was actually breathing.  Not sure why it would do that.  Could it have been that I actually DID doze off and maybe was starting an event and it kicked in?  I really don't think I dozed, but who knows.  Would that be clearly depicted anywhere on the graphs?  I even tried the "Blow Back" when it would do that, which may have helped a little, not sure.

5.  As far as air going into the stomach, do we know how that happens mechanically?  I noticed something last night.  In those instances when the machine was providing longer inhalations at higher pressure, I was still doing my normal rhythm of breathing.  So I felt like I would breathe in, and at the peak of my breath when I would normally exhale the machine was still blowing in at me for a little longer of a breath before the machine would exhale.  Could it be that period of the "extra breath length" that it gets pushed down into the stomach?

Morning.  If you want to have a look to better understand what is going on search for examples to use when your Flow Rate chart has sudden changes in density (In the example you posted above your Flow Rate chart goes from solid black to gray) and times when your Resp. Rate chart shows a sustained drop (not just a spike down for one breath). 

If you want we can have a look.  Post 2 minute and 30 second long charts starting 23:40, 23:56 and 0:39 

WillSleep

(11-16-2019, 07:36 PM)WildSteelhead Wrote: Hi WillSleep,

Thanks for the insight.  I kind of stumbled through the zooming process, hope to get it better next time.  

With regard to your comment about the DreamStation, are there significant differences in the way the AirCurve and DreamStation provide their therapy?  For lack of better terms, is one more aggressive than the other?  Do they both have the same full range of adjustments of settings?

• These two machines are the only xPAP machines designed to deal with CSA and complex Sleep Apnea (treatment emergent CAs).  
  
• These two machines just two others more complex and $$ are the only xPAP machines designed to raise Pressure Support rather than EPAP to deal emerging apnea events.
  
• They are both stellar and both have a few weaknesses, both pretty dates with issues.
  

• In concept, the ASV more intelligently measures and drives your therapy off of Minute Vent (thats good).  This is great but this implementation of the concept can fail stupendously as the ASV lets some 200 lb men drop down to Minute Vents of 2.3L/min, a level of ventilation appropriate for a seven year old child (thats bad).
  
• The ASV has no backup rate and actually likes to push some people to respiration rates below levels they would reach naturally (maybe you saw this above) (this is bad).
  
• People not seeing those issues seems to like the ASV experience better than the AutoSV and watching the ASV run is sometimes a sight to behold.  (both good).
  
• The AutoSV drives your therapy of the less academically advantageous Tidal Volume  (Ok, not great) but provides visibility to more settings giving you much better control (thats good).  
  
• The AutoSV has a Breaths per minute backup rate of 10 bpm (good).  The ASV has no Backup Rate (bad). 
  

• The ASV's pressure climb rates are MUCH more responsive and will likely take out more CAs and events from a lower starting pressure level (thats good).  However, the chaos, drama and trauma to your cardio, ECG, etc is higher from this responsiveness, and does not recover from leaks well (that's bad).
  
• The AutoSV will not move as fast to respond to new events (thats bad), but responds better to leaks and will bring less chaos, drama and trauma to your cardio, ECG, etc (thats good).       
  

• People with true CSR, not 'treatment emergent CAs', might see the ASV as a much better solution.
  
• People with just 'treatment emergent CAs' who are more sensitive to pressure changes might find the Dreamstation AutoSV and the VAuto a better choice.
  
• People trying to get their night-time average heart rate lower might find the Dreamstation AutoSV and the VAuto a better choice.    
  
• People who are seeing the ASV force them into un-naturally low Respiration Rates (RR) and seeing Minute Vent drop scary low because Tidal Volumes are not rising to match the low RR and other dis-synchronicity might find either the Dreamstation AutoSV or the VAuto a better choice, depending on how much true help they need with CSR.
  
• People who see no negative impacts from using the ASV might be really, really, really happy using the ASV.