04-09-2016, 09:46 AM
(This post was last modified: 04-09-2016, 09:47 AM by I_will_never_sleep_again.)
For the last 4 nights I have been using nasal masks (dreamwear 2 nights and wisp the other 2) my AHI has been 00 .10 00 .09. Before I was using a FFM and AHIs were good but not this good. I have turned down pressure to 11, my RX is for 16. (I think eliminating alcohol has allowed for the reduction).
With the nasal masks I have found the only way to keep my mouth shut is with a 4" piece of sports tape across my mouth, the chin straps don't work 100% of the time and it's uncomfortable. The tape works for me.
I am wondering if breathing through my mouth with FFM causes throat to close and results in a higher AHI or are the nasal masks not as good at reporting AhIs. The tape forces me to nose breathe only.
I am going to lower pressure again to 10 and keep going until I get bad results.
This makes me wonder if I could force myself to nose breathe, would I be able to get rid of the mask, or would it be dangerous to sleep with tape over the mouth and no mask.
How low should I go on the pressure before trying no mask assuming my AHIs stay close to zero?
04-09-2016, 10:58 AM
(This post was last modified: 04-09-2016, 11:08 AM by surferdude2.)
I suggest you use a chin strap if you want to test without the CPAP mask and flow generator. I also suggest that you get and wear a recording oximeter to make sure your O2 level is staying within reasonable bounds.
There is no reason to tape your mouth in absence of flow generator pressure, so a chin strap will be fine.
It is generally accepted that a nasal mask will allow reducing the therapy pressure as much as 3 cm H2O.
Furthermore, some folks can escape using CPAP by taking care to not sleep in the supine position and at the same time encouraging nasal breathing as much as possible, even using internal nasal devices or adhesive strips.
All such tests should be judged by how well you feel and how well your O2 levels are maintained. You can have disruptive apnea events without O2 deprivation so it alone isn't completely accurate in indicating how well you are resting but it can still be helpful as an indicator of how well your particular testing is working withing safe bounds.
04-09-2016, 05:59 PM
(This post was last modified: 04-09-2016, 06:15 PM by vsheline.)
I think any mask which pulls our lower jaw back toward our throat (like Full Face, hybrid and Total Face masks do) will tend to pull our tongue back toward the throat, which may increase our pressure needs to some degree, as well as could gradually cause jaw problems.
The dental appliances for treating very mild OSA work partly on the principle of holding the jaw in a forward position, which tends to help the tongue stay away from the throat.
I use a FFM because my pressure needs are very high, I'm a mouth breather, and I have narrow nasal passages which are a little hard to breathe through.
Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.