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difference between cpap set to 9 pressure and autoset max 9 min 5

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martyf +0 points · about 2 months ago Original Poster

I have been using the resmed 10 autosense with the setting CPAP and pressure set at 9. The new machine they are setting it to AutoSet with max 9 and min 5 pressure. This change in settings is not based on a new sleep study. What impact will this have on me? Should I be concerned? Thanks,

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Sierra +0 points · about 2 months ago Sleep Patron

It is not unusual to set it that way. You may find it does not give you as low an AHI because you will have to incur apnea events to get the pressure up to 9 cm from 5 cm. On the other hand you will spend part of your night with the pressure lower than 9 cm. I prefer to get the pressure up earlier.

The other issue is you may find 5 cm to be kind of suffocating, like not enough air. My preference would be to use the AutoRamp feature with a ramp start pressure of 7 cm, a minimum pressure of 7 cm, and a maximum of 9 cm in your case. This will hold the pressure at 7 cm until you fall asleep. The other settings I would make is to have the EPR set at 3 and for Ramp Only. This will give you 7 cm in inhale and 4 cm on exhale during the AutoRamp period before you go to sleep. When you go to sleep it will start you out at 7 cm and change pressure as needed to as high as 9 cm.

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martyf +0 points · about 2 months ago Original Poster

I think I would prefer to keep my AHI events low as I do not mind the present 9cm. The 9cm was recommended by the one and only sleep study 4 years ago. I had shown both obstructive and central apnea at that study, however not very high counts, and at 9cm it was 0. My 3 months average AHI had been 0.3 with the pressure set at 9cm. I will try to discuss the settings with the clinician prior to him coming to set it up.

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