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Switching Back to Old Machine
A couple of weeks ago I got the ResMed S8 AutoSet II with EPR. I slept with it a week, got good quantitative results, but felt kind of lousy. Now I'm switching back to my Respironics M Series Pro, and am still feeling sub-optimal. My guess is that it's not a good idea to switch back and forth between the two machines, since they have different algorithms of treatment that take time for the body to adjust to. Is that correct?
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Replies to This Discussion
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Permalink Reply by Judy on
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I'm just taking a guess that MAYBE there might be a 1 cm or 0.5 cm difference in needed pressure between the two brands. Not for everyone but for some. Some people do as well on one brand as the other and some actually do do better on one brand than the other.
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Permalink Reply by Jim Nadolny, BS, CRT on
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What are the settings for the two machines? Auto, Cpap, Flex, EPR, max press, min press. I would first make sure that each machine is set with comparable settings. There is a difference in the algorithms, but you should make sure you are comparing the same or like settings first. If so then dig deeper, I would assume that if you switched back to your old machine, you would start feeling better within a week. If not, maybe it is not a machine problem.
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Permalink Reply by Mike on
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both machines are set as identically as possible i think -- 10-12 auto range; EPR/Flex at lowest setting.
Jim Nadolny, BS, CRT said:What are the settings for the two machines? Auto, Cpap, Flex, EPR, max press, min press. I would first make sure that each machine is set with comparable settings. There is a difference in the algorithms, but you should make sure you are comparing the same or like settings first. If so then dig deeper, I would assume that if you switched back to your old machine, you would start feeling better within a week. If not, maybe it is not a machine problem.
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Resmed's EPR is limited to 1 cm, 2 cms, 3 cms of pressure drop whereas Respironics never had told us how much of a pressure drop their Flex settings allow.
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i might go that way (raise the minimum pressure to 11 to compensate for the EPR)
j n k said:Good point, Judy.
Using EPR on a ResMed is almost like running bilevel (though not quite), whereas the way exhale relief works on the Respironics is a little different. As I understand it, Respironics exhale relief only lowers pressure at the start of exhale and gets the pressure back up by the end of exhale, whereas ResMed's exhale relief leaves the pressure lower until inhale starts. Both are good ideas, but they feel different and some react to them differently.
Some ResMed users who are self-tweakers choose to raise their minimum pressure on their ResMed APAP the same amount as what they set EPR at. They do that because they consider running a ResMed APAP at 10-to-12 with EPR on "1" to be like running it at 9-to-12, so they adjust their machine to 11-to-12 to make up for that 1 cm that is lost to EPR during exhale.
Judy said:Resmed's EPR is limited to 1 cm, 2 cms, 3 cms of pressure drop whereas Respironics never had told us how much of a pressure drop their Flex settings allow.
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