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Sierra

Sierra
Joined Jul 2018
Bio

CPAP: AirSense 10 AutoSet

Set to CPAP Fixed Mode

Pressure 11 cm

Ramp: Auto

Ramp Start: 9 cm

EPR: 2, Full Time

Mask: ResMed AirFit P10 Nasal Pillow

Canada

Sierra
Joined Jul 2018
Bio

CPAP: AirSense 10 AutoSet

Set to CPAP Fixed Mode

Pressure 11 cm

Ramp: Auto

Ramp Start: 9 cm

EPR: 2, Full Time

Mask: ResMed AirFit P10 Nasal Pillow

Canada

I find that for those who use SleepyHead and really look at what is going on, then improvements can usually be made by increasing minimum pressure and reducing maximum pressure, and quite often by increasing the minimum start pressure. Yes, people are different, but there is no way I would be comfortable with a minimum start pressure of 4 cm. It is just too low and I get a suffocating feeling.

An APAP is a reactive, not a predictive machine. There may be artificial intelligence predictive machines in development, but todays machine has to see an issue before it reacts. If you start every sleep session with 4 cm of pressure and you really need 10 cm for effective treatment, then you have to have enough apnea events in the early sleep to ratchet up the pressure to the effective level. By setting the minimum pressure at 10 cm you put your knowledge from viewing SleepyHead data into the machine. That makes the so called "automatic" method much more effective. The machine does not have to play trial and error on you every night. I think setting the minimum up in a Dreamstation is more important than with the ResMed. The Dreamstation algorithm seems to be slow to increase pressure and quick to reduce it, so it is going up and down all night, if you give it the freedom with a wide pressure range.

There is less treatment effectiveness to be gained by setting a lower maximum pressure, but some comfort can be gained. From viewing SleepyHead you can find times when the machine tends to become over responsive and push pressure up. Mild snoring and flow limitation can run it up even when apnea events are not occurring. If the individual is having issues with higher pressure such as leaks and waking up, it may be of benefit to tolerate a bit of snoring and flow limitation in exchange for lower pressure. And since apnea events are not increased, AHI stays low. My wife is in that category.

But if you set tight limits then you have to monitor your results more diligently.