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The Aircurve doesn't have EPR. EPR is on Airsense models. The Aircurve models use PS (pressure support). Also, the Aircurve has a min and max time parameters to determine when it starts or ends.
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.
Thanks for getting back to me. I was on ResMed AirSense until 3 days ago and my doctor used those settings to determine my settings on my Aircurve. The post #58 explains.
First.associate EPR with PS, meaning that they both change pressure settings, just on a different breath direction. EPR subtracts from the inhale pressure. PS adds to the exhale pressure.
OK, you had a pressure of 12 and EPR set to 3. This equates to IPAP = 12, EPAP = 9 , and an EPR = 3 . Airsense uses IPAP - EPR = EPAP. The Aircurve does things slightly different. it uses EPAP + PS = IPAP, Based on your original pressure settings, the Aircurve would be set as EPAP=9, PS=3 and IPAP=12. On the Aircurve the IPAP pressure is a "Do Not Exceed" value.. Your Aircurve theoretically could be set as EPAP=8 to 14, PS=3, IPAP=15. Without the IPAP setting, your IPAP pressure range with the previous EPAP and PS settings would yield an IPAP range of 11 to 17. Since the IPAP is set to 15, your pressure range would be 11 to 15. I don't have direct knowledge of the Aircurve, so I'm uncertain as to how high the EPAP pressure would go.
I hope this puts the different parameters into some kind of perspective.
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.
(09-30-2019, 11:22 AM)howeyb Wrote: First of all, he discounted the EPR reduced pressure of 9 on my old AirSense 10 machine because he believes the relief pressure only lasts for milliseconds at the very beginning of the exhale
I think he has EPR mixed up with Flex, the feature that reduces the exhale pressure on Respironics machines.
By the way, he has your VPAP set in S mode. Shouldn't it be in VAuto mode?
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.
(09-30-2019, 11:22 AM)howeyb Wrote: First of all, he discounted the EPR reduced pressure of 9 on my old AirSense 10 machine because he believes the relief pressure only lasts for milliseconds at the very beginning of the exhale
I think he has EPR mixed up with Flex, the feature that reduces the exhale pressure on Respironics machines.
By the way, he has your VPAP set in S mode. Shouldn't it be in VAuto mode?
Oh that would explain it. I will ask my sleep tech today about using VAuto. Thisnclinic tends to only use auto for titrating at the beginning but this sounds like a good idea since this is a new machine to me and I think my settings are not quite right
Thanks very much for getting back to me before my appointment.
I've been on my Resmed bilevel Aircurve Vauto for about 2 weeks now and I find the breathing easier and I think I am slowly starting to feel like I am getting some better quality sleep and longer sleep chunks. My aerophagia is still there but tolerable.
I started out on the bilevel with FIXED EPAP/IPAP 11, PS4, then 10 PS4 and am now on 9 PS3 with AHI's getting a bit better with every change (around 1)...mostly a few CAs.
I have had ZERO flow limitations the whole time on the bilevel even with 9 PS3 which is the same fixed pressure I was on before I went to bilevel (12 with EPR3).
I checked the graphs page in the lower right corner and flow limitations is green. Why would I have flow limitations on my cpap at fixed 12 EPR3 and NO limitations for the same pressure on my bilevel? I'm confused because I was under the impression that EPR 3 on cpap works the same as PS 3 on the bilevel.
Does it have anything to do with the easy breathe feature?
BTW my sleep clinic tends to only uses the auto feature for titrating.
old and current files at identical fixed pressure attached
That's an interesting comparison. Would you mind putting the machine in Vauto mode with minimum and maximum EPAP at 9.0 and PS at 3.0? I'm wondering if the flow limitation detection is turned off with S-mode.
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.
(10-15-2019, 07:37 AM)Sleeprider Wrote: That's an interesting comparison. Would you mind putting the machine in Vauto mode with minimum and maximum EPAP at 9.0 and PS at 3.0? I'm wondering if the flow limitation detection is turned off with S-mode.
I will see what my sleep tech says in today's appointment. I don't have a prescription from the doctor for a bilevel in my hand yet and when I get it, I have to send it in to my insurance for preapproval (they need a solid reason for bilevel). I see him at the end of the month. Still renting and the situation is a bit tricky. The tech has limited ability to make changes without the doctor's permission and I'm not sure if the doctor is on board. For instance he thinks UARS is mild OA, BUT since seeing my results with a cervical collar (Boom my OAs gone) and I also giving him a related recent journal article, he has actually prescribed a CC for a few patients to try.
Once I OWN the bilevel, I will be free to make any changes and I will. In the meantime, I think I will try to contact ResMed Canada (if that exists) and see what they say about flow limitation in S mode versus Vauto mode.
(10-15-2019, 07:37 AM)Sleeprider Wrote: That's an interesting comparison. Would you mind putting the machine in Vauto mode with minimum and maximum EPAP at 9.0 and PS at 3.0? I'm wondering if the flow limitation detection is turned off with S-mode.
I will see what my sleep tech says in today's appointment. I don't have a prescription from the doctor for a bilevel in my hand yet and when I get it, I have to send it in to my insurance for preapproval (they need a solid reason for bilevel). I see him at the end of the month. Still renting and the situation is a bit tricky. The tech has limited ability to make changes without the doctor's permission and I'm not sure if the doctor is on board. For instance he thinks UARS is mild OA, BUT since seeing my results with a cervical collar (Boom my OAs gone) and I also giving him a related recent journal article, he has actually prescribed a CC for a few patients to try.
Once I OWN the bilevel, I will be free to make any changes and I will. In the meantime, I think I will try to contact ResMed Canada (if that exists) and see what they say about flow limitation in S mode versus Vauto mode.
Thanks,
Betty
ugh called ResMed Canada to ask...escalated once and both people could not answer this detailed technical question (flow limitation data output in S mode versus vauto mode on Aircurve) and said that the clinic would have to call to talk to a more experienced technical person. They would not escalate me to that person since they don't deal with the public on that level.
