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+--- Thread: [Pressure] Do we need to change pressure? (/Thread-Pressure-Do-we-need-to-change-pressure)
Do we need to change pressure? - misq2kir - 02-28-2018
We moved from CA (near sea level) to CO (about 4,900 feet) last year. Haven't been able to have a sleep study but wonder if our pressures need to be changed. We are both set at 13 and hubby seems to be doing pretty good. My AHI seems to be going all over the place, lately I am using more water. We both have Resmed S9 with humidifiers, different masks for each of us. Have been changing air filters about every month. I don't feel like I am sleeping all that well lately. Suggestions? Comments? We did ask for sleep studies due to altitude difference, they were approved, hubby had severe back issues so we couldn't do them and now the insurance has denied them.
Also, my CPAP doesn't automatically stop blowing when I get up in the night if I don't push the button. Hubby's does automatically shut down if he takes his mask off. Sorry to be so wordy but we have no place else to ask.
RE: Do we need to change pressure? - Sleeprider - 02-28-2018
You are using a fixed pressure Resmed Elite, that provides full data. Resscan is not bad, but #Sleepyhead is easier to use and to understand. I recommend you install and use it. This may give you more useful information than a sleep study.
Moving to a higher altitude and dryer area is why your machine now uses more water. Relative humidity in Colorado is very low during the winter in indoor spaces. In higher altitudes, people often experience a change in AHI with an increase in clear airway or central events. Not everyone is affect, but the answer is in the Sleepyhead data. We can help you to understand the data and use it to make adjustments. There are links to tutorials for organizing data and posting it on the forum in my signature.
One last thought, you may qualify for a new CPAP machine soon, and the Resmed Airsense 10 Autoset is going to be what you want to replace your S9 Elite. The Airsense 10 provides pressure adjustments day to day, and through the night to meet your needs. Many people are able to use the auto CPAP to self-titratie and avoid a sleep study. Put up some data, and we can probably get you squared away for your new location. 4900 feet is not very high, and you will notice more significant changes if you stay in the mountains. It should not be a problem, but all the more reason to consider an Autoset.
RE: Do we need to change pressure? - Gideon - 02-28-2018
Welcome to the forum and yes, we can and will help you.
You can find a link to get your manual at the top of the page. or click here
You should find instructions for auto off (and on) in there.
Theoretically CPAP machines compensate for altitude but we frequently see the need to change settings.
The best way to provide help would be to post a copy of your Daily Charts
The preferred software is SleepyHead (our instructions are based on SleepyHead)
The daily charts will tell us how you and your machine are working together and do the best job of helping us to give you the best advice possible.
I do suggest a separate thread for each of you to post in so recommendations do not get mixed up.
Please let us know how we can help you.
Fred
RE: Do we need to change pressure? - misq2kir - 02-28-2018
OK, here is the data I downloaded from my SD card. Please let me know if this gives you any information or do you need additional data? Thanks.
RE: Do we need to change pressure? - Gary1of2 - 02-28-2018
Hi,
It would be more helpful if you look at some of our siginatures on how to orginize sleepyhead charts so we cans see whats giong on better.
RE: Do we need to change pressure? - Sleeprider - 02-28-2018
Misq, your overview chart is useful because it shows that you have gone from less than 1 AHI (.59) to between 2.2 and 2.8 currently. The increase in AHI is all obstructive, and you have insignificant clear airway and hypopnea. Your actual pressure is 13 cm with EPR (exhale pressure relief) setting of 3; so the actual pressures are 13 IPAP and 10 EPAP.
Given the increase in OA events, I think you need minor increases in pressure. Since you are already less than 3.0 AHI, we can go with less than 1-cm pressure increases. For starters, you can use a pressure setting of 13.6 and leave EPR at 3. This is a small increase in pressure and may not fully resolve the OA, but it's worth a look. The next step is 14 cm pressure if needed, This link will give you instructions on making changes: https://www.apneaboard.com/resmed-s9-cpap-setup
A detailed chart will help us to see the distribution of events through the night, and we will be able to see any flow limitations and other respiratory data. It would be useful to know which nasal mask you are using. The Auto-off feature on your machine relies on detecting a large leak. Some women's nasal pillows in small size and a few nasal masks leak too slowly to trigger the machine to turn off. I assume it auto-starts? Welcome to the forum.
RE: Do we need to change pressure? - trish6hundred - 03-01-2018
Hi misq2kir,
WELCOME! to the forum.!
Good luck to both you and your husband as you continue CPAP therapy.
You have come to the right place for guidance, hang in there for more responses to your post.