altitude factor

[larryn]

how does altitude change effect pressure settings? I will be going from 1000ft to7000ft.What changes might be needed?

[Wulfman...]

how does altitude change effect pressure settings? I will be going from 1000ft to7000ft.What changes might be needed?

Read your User Manual. It's in there. Page 16 in the English part.

If you don't have one, here's a link:

https://www.resmed.com/us/dam/documents ... er_eng.pdf


Den

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[RNeil]

The reference says it will work at altitudes 0-8500 feet. I think that means that is the altitude range that it was tested at. I think the OP was asking how or if he should change the settings.

As I understand the CPAP theory, the machine makes the pressure in your airway higher than the outside so that your airway doesn't collapse. The absolute pressure doesn't mater, just the difference between the pressure in the room and in your airway. The pressure that the machine measures and regulates is the difference between the atmospheric pressure and the outlet pressure. This pressure difference does not change with altitude. So I don't think you need to change your settings.

[Wulfman...]

The reference says it will work at altitudes 0-8500 feet. I think that means that is the altitude range that it was tested at. I think the OP was asking how or if he should change the settings.

As I understand the CPAP theory, the machine makes the pressure in your airway higher than the outside so that your airway doesn't collapse. The absolute pressure doesn't mater, just the difference between the pressure in the room and in your airway. The pressure that the machine measures and regulates is the difference between the atmospheric pressure and the outlet pressure. This pressure difference does not change with altitude. So I don't think you need to change your settings.

For all intents and purposes, the machine automatically compensates for altitude.
In the "old days" and cheaper, more basic models, there were settings for different altitudes. However, it appears that the newer ones (even in the more basic models) now have automatic altitude compensation.

The OP should be just fine.

Den

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[McSleepy]

One consideration in altitude change is the change in absolute humidity; possibly exacerbated by the fact that most high-altitude locations also have drier climate, so relative humidity will also be lower. Ultimately, be prepared to adjust (increase) your humidification levels.

McSleepy