Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Need to suck for air in new BiPAP
#1
Need to suck for air in new BiPAP
I had been using a DreamStation Auto CPAP since November and recently was moved to an BiPAP.  The CPAP was able to bring my AHI down to the 6-10 level after my Dr moved me to a fixed CPAP setting of 14 cm, but that caused an uncomfortable number of Central Apneas.  A second PSG Titration study indicated I needed an Auto BiPAP with settings of IPAP 20 EPAP 9 and PS 4-8.  My DME sent me a DreamStation Auto BiPAP already configured with those settings, which I was able to confirm.  

I never felt air starvation or need to "suck" for air with my fixed CPAP at 13-14, but did with these settings on the Auto BiPAP.  OSCAR showed the pressure to be a consistent 13 with a few periodic jumps to 15 for a few minutes.  However CA's were still high at 23-25.   I discussed the issue with my DME and Dr who authorized me to change from BiPAP to fixed BiPAP with IPAP 17, EPAP 12 and a Rise of 1, which I am still at.  CA's are still running high at 36-51.  I have sent my DME and Dr copies of my OSCAR reports, but have yet to hear back.

Besides the high CA's on the BiPAP being much higher than on my CPAP, I have a real problem of having to "suck" for air and can even feel my ResMed AirTouch F20 mask contract when I breathe in.  The mask is not leaking (even though OSCAR's Leak graph is very odd in comparison to what I was seeing with my CPAP - an issue for another time).  I would hear or feel it if it was.  

I can't believe this is how BiPAP's are supposed to function.  I understand the machine needs to know when to change from exhale mode and pressure to the inhale mode and pressure, but it shouldn't require a draw for the entire inhale.  The DME is clueless.  (I think I know more about the machine than they do.)  

Breathing during my PSG Titration study was no problem at all; actually a pleasure compared to the problem I am having.  I realize the machines in the Sleep Lab are far more sophisticated and probably more like a BiPAP ST or ASV, but is this normal?  Do I need to obtain and attach a manometer to prove the issue?

   
   
Post Reply Post Reply






Donate to Apnea Board  
#2
RE: Need to suck for air in new BiPAP
The problem is your doctor prescribed a BiPAP instead of an ASV. Your problem is central apnea caused by the constant pressure support of 5 cm, and no backup rate to correct the centrals. You are clearly getting plenty of air and pressure, so the sensation of not getting enough air is how you sense centrals. Do you have any results of sleep studies or titration studies that you could post? (please redact any personally identifying information). I think in the end you should ask for titration on ASV, in the meanwhile, try setting your BiPAP to lower pressure support levels. Moving to your previous minimum PS of 4.0 may help, but explore lower PS at 3.0 as well and observe which direction your results go, and how you feel. Lower PS should help to reduce the CA events. In BiPAP S mode, reducing PS means reducing IPAP, keeping EPAP at the same pressure.
Sleeprider
Apnea Board Moderator
www.ApneaBoard.com

____________________________________________
Download OSCAR Software
Soft Cervical Collar
Optimizing Therapy
Organize your OSCAR Charts
Attaching Files
Mask Primer
How To Deal With Equipment Supplier


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  BIPAP machine ArnieSwas 10 197 5 hours ago
Last Post: Sleeprider
  BiPAP Dreamstation pressure drops PhoebeAnn 9 111 Today, 10:21 AM
Last Post: PhoebeAnn
  New on Bipap ASV, have a few questions tcolar 108 2,985 04-04-2020, 09:13 PM
Last Post: Sleeprider
  New BiPAP ST user Vet with complex apnea SHatfield 124 1,948 04-01-2020, 10:22 AM
Last Post: SarcasticDave94
  [Pressure] BIPAP VS CPAP catspurrrr 6 162 03-30-2020, 10:07 PM
Last Post: renard
  Which one of these is best for bipap? BunnyMummy 10 238 03-26-2020, 03:55 PM
Last Post: Sleeprider
  For those have tried BiPap and CPAP/APAP - Did anyone not prefer the BiPap? Jamesdg89 9 228 03-17-2020, 04:25 AM
Last Post: holden4th


New Posts   Today's Posts






About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.