Moving from Pr Sys 1 to Airsense 10

[Pirateghost]

I have been using my PR System One now for years with great results. It is set Cflex 1, Auto 8-12. My pressures have been Auto Mean 8.2, Peak 9.1, and 90% 9.0. AHI 0.6.

Having the VA provide my machine so went through new sleep study. They are provide AirSense 10. They have the pressure set at CPAP 7, EPR 2.

Should I give these new settings are try? I can easily change it to auto 8-12 but am wondering just close the two machines are on pressure settings.

Any thoughts?

Thanks.

[SewTired]

They would have the same pressure settings, but they do work differently. The Resmed algorithm is more aggressive to treat apnea. You are more likely to see that as a difference.

[Pirateghost]

Thanks. Am wondering if I should switch over to auto 7-12 and watch to see how it is working out. Hate to think after all these years one uncomfortable night sleep study will/can be used to change my numbers around.

[JimW159]

There should be no difference in the pressures produced compared to what is set - 8cm H2O or any pressure setting will be the same regardless of brand of machine. Given they are both highly regulated devices that are designed to provide consistent pressures I would expect no differences. The only operational differences I am aware of are in the algorithms used to overcome the various forms of disturbance and the mechanism used to identify the type of disturbance - in these regards I know of no definitive measure of "bestness" for either machine. There are some differences in the terms used in the data recorded, but that is nomenclature only.
Do you have recent full data from your old machine? If so, have you looked at it in SleepyHead? If your 90% number has been consistent for some time, I would be surprised if you continued your AHI pattern with a fixed pressure 2cm lower than your 9cm 90% number. Sleepyhead has the benefit of being able to deal with both formats of data equally well so you would be able to track changes equally well following the changeover. SH does report the pressures differently in that where PR reports a 90% figure, ResMed reports 95% - the data reported is of the same thing, just the sample is a bit different. I certainly can't tell you what you should do, but I might give it a few nights to get used to and then make the change from fixed pressure to auto if you feel the need. With the AirSense 10 you have the option to select additional items you have access to in the "My Options" menu: beginning on page 5 of this manual will outline the two levels you can choose between "essentials" and "plus." http://www.resmed.com/au/dam/documents/ ... ac_eng.pdf Selection of this feature is made within the clinician menu.

[Pugsy]

With CPAP mode 7 cm with EPR of 2 your pressures would be 7 inhale and 5 exhale all night long. That's not going to be quite what you were using on the Respironics machine and even with the slightly more aggressive algorithm of the ResMed you might find that your AHI increase somewhat.

EPR and Flex exhale relief are 2 different animals and not exactly the same.
ResMed EPR is a straight across the board drop of 1 cm per setting...EPR of 1 is a 1 cm drop, EPR of 2 is a 2 cm drop and EPR of 3 is a 3 cm drop.
Flex exhale relief is flow based and that setting of 1 may or may not be giving you a full 1 cm drop.

If it were me I would switch to auto mode and maybe leave the minimum at 7 and change the max to 12 and leave EPR alone (assuming it is comfortable to you) and see what happens.

[Janknitz]

I switched from a PRS1 to Airsense 10, and I loved it from the first night. IMHO, the algorithm is so much smoother and more comfortable. I always felt like I had to breathe in the PRS1's rhythm, the Airsense matches ME. The air actually warms (even when my PRS1 humidifier worked, it was NEVER warm), and it's a million times quieter! I slept fine the very first night on the new machine.

I'd suggest using your current settlings (or a close approximation) for a few nights to see how you acclimate to the new machine, and then see if the newly prescribed settings work for you. Use Sleepyhead to compare your data.

[LSAT]

I have been using my PR System One now for years with great results. It is set Cflex 1, Auto 8-12. My pressures have been Auto Mean 8.2, Peak 9.1, and 90% 9.0. AHI 0.6.

Having the VA provide my machine so went through new sleep study. They are provide AirSense 10. They have the pressure set at CPAP 7, EPR 2.

Should I give these new settings are try? I can easily change it to auto 8-12 but am wondering just close the two machines are on pressure settings.

Any thoughts?

Thanks.

I hope they gave you an AirSense 10 AUTOSET. If they set the pressure at 7, they may have given you the low end machine that provides no data.

[Pirateghost]

It is auto capable. Otherwise, I wouldn't have switched. Seeing how this entire process has unfolded, wouldn't surprise me if they made a mistake give me this model though.

[Pirateghost]

Set the new machine to auto 7-12. Saw pressure avg of 9.5. Moved it to 8-12, pressures still just below 10. Funny because sleep study said I should be set at 7. I like the machine better than my old PR sys 1. AHI is still down around .02.

[Pugsy]

When you have time you might want to update your equipment profile to reflect your new machine.