Sleep Apnoea Forum Bringing Help + Support to the Patient

Over the last month, I have been using the Sleepy Head software, and as usual for me, I have been doing a bit of experimenting. My AHI is usually below 4 using a pressure setting of 15cm H2O. I usually have the humidity set at 2/5. As the pressure is quite high, and using nasal pillows, my "snotbox" can get a little dry by morning, so I started turning the humidity up... in stages over a week or two, right up to 5/5. My AHI went up in stages to match, up to an AHI of over 9 on a humidity setting of 5. Most of the recorded events on higher humidity settings occur after 4 hours of sleep, every night. This would tie in with the higher humidity levels having time to build up. I cannot find any published research on the subject, but it looks fairly conclusive to me that there is a direct link between AHI and humidity settings. Does anyone else have any observations?

Views: 986

Reply to This

Replies to This Discussion

I noticed that too rock. ....and closing your nasal cavity off at the back of your throat does wondrous things to your events too. I have a few masks, but I favour the opus 360 by far, and the humidity at 3.. I still wake dry & thirsty in the morning, but not too bad, but last nights AHI was only 1.96

That's a great AHI, I would put a glass of water next to the bed and run with it. The Opus is by far my favorite nasal with the Swift in a close 2nd.

Hi Darryl, I have a similar experience concerning increased humidity and AHI. For about one year I have been using the ResMed s9 Autoset with F20 mask, a pressure setting of 10 cm H2O without a humidifier and have been averaging AHI below 5. The first night I used the H5i humidifier with the heated tubing and the temperature set at 27 C and my AHI went over 9. The second day I reduced the temperature to 23 and the AHI dropped to 6. I know the temperature increase causes AHI increase of  but I also noticed an increased of the AHI with the use of humidifier in general. I am also surprised that there is nothing written about this.

Maybe it is just you three that is affected in this way, I have found since reading your post and playing around that I have the opposite effect.  If I turn down the humidity I not only waken up but my AHI shoots up a lot.

Mind you I have never smoked so that might be a factor in it as well?

Reply to Discussion


Sleep Apnoea Forum

New to the Sleep Apnoea Forum? 

1. Stop by our Sleep Apnoea Welcome Center to introduce yourself to the SleepGuide community.
2. Start a New Topic of Conversation.
3. Post your photos - of yourself, your old CPAP machine, your new CPAP machine, your pet, something about you!

Interested in advertising, have a problem or need to contact us? Click the Report an Issue page.


Latest Activity

Nick Sumner added a discussion to the group Buy-Sell-Swap

ResMed S9 with humidifier £160.00

ResMed S9 with humidifier, complete with water chamber, filter, electric cable and tube. Very low usage. Comes with travel case.Excellant condition. ...... £160.00.I have pictures if you wish to view.Can post, will be sent signed for, this will be…See More
Profile IconJml and FrankDorn joined Hope2SleepGuide
be fokte is now a member of Hope2SleepGuide
May 14
Thomas hatrick added a discussion to the group Buy-Sell-Swap

Selling Dreamstation auto CPAP machine with heated humidifier

Hi,Selling Dreamstation Auto CPAP machine with heated humidifier. Also comes with facemask and spare filter.Only used 4-5 times like brand new. £500https://imgur.com/a/EwURHYb.See More
May 13
Thomas hatrick joined The SleepGuide Crew's group
May 13
Profile IconJackson Rogers and Thomas hatrick joined Hope2SleepGuide
May 13
Smadar Zmirin posted a discussion

Resmed airsense 10

In good condition comes with travel bag and a mask all ready to go looking for $450 including shipping.Thanks  See More
May 12
Smadar Zmirin added a discussion to the group Buy-Sell-Swap

Resmed airsense 10 autoset

For sale is a Resmed airsense 10 autosetIncludes The unit itself and cables and hose travel bagnose mask $450 including shipping send me me a message if your interested See More
May 12
Smadar Zmirin joined The SleepGuide Crew's group
May 12
Profile IconSmadar Zmirin and Lee Emerick joined Hope2SleepGuide
May 11
Jason Streets posted a discussion

Sleepcube for sale

I had this CPAP machine nearly six years ago. I used is a handful of times and my wife said either it had to go or she would. It has sat in a cupboard in its box ever since and it needs to find a better home. I was astonished when I looked up to see…See More
May 4
Eric Purvis is now a member of Hope2SleepGuide
May 1
Kath Hope replied to Judy Y's discussion Sleep apnoea and TMJ
"Sorry to head this Judy, and it could well be the fact that you're having to tighten the mask a little too much that's causing the jaw problems.  It could also simply be that the mask isn't suitable for you, so worth asking your…"
Apr 29
Jason Streets is now a member of Hope2SleepGuide
Apr 29
Lily Mae updated their profile
Apr 23
Profile IconKatherine Palmer and Lily Mae joined Hope2SleepGuide
Apr 23
Judy Y posted a discussion

Sleep apnoea and TMJ

HiI have been using my cpap for about 20 months now. On the whole have got on with it reasonably well.About 6 months ago started to develop a clicking in my jaw (only on the right side) and sometimes could not open my mouth properly, It is quite…See More
Apr 21
Janice gordon is now a member of Hope2SleepGuide
Apr 16
Mark A updated their profile
Apr 14

© 2019   Created by The SleepGuide Crew.   Powered by

Badges  |  Report an Issue  |  Terms of Service